diff --git a/mfa/Common.py b/mfa/Common.py
index 1504340..7d45373 100644
--- a/mfa/Common.py
+++ b/mfa/Common.py
@@ -1,19 +1,26 @@
 from django.conf import settings
 from django.core.mail import EmailMessage
+
 try:
     from django.urls import reverse
 except:
     from django.core.urlresolver import reverse
 
-def send(to,subject,body):
+
+def send(to, subject, body):
     from_email_address = settings.EMAIL_HOST_USER
-    if '@' not in from_email_address:
+    if "@" not in from_email_address:
         from_email_address = settings.DEFAULT_FROM_EMAIL
     From = "%s <%s>" % (settings.EMAIL_FROM, from_email_address)
-    email = EmailMessage(subject,body,From,to)
+    email = EmailMessage(subject, body, From, to)
     email.content_subtype = "html"
     return email.send(False)
 
+
 def get_redirect_url():
-    return {"redirect_html": reverse(getattr(settings, 'MFA_REDIRECT_AFTER_REGISTRATION', 'mfa_home')),
-            "reg_success_msg":getattr(settings,"MFA_SUCCESS_REGISTRATION_MSG")}
+    return {
+        "redirect_html": reverse(
+            getattr(settings, "MFA_REDIRECT_AFTER_REGISTRATION", "mfa_home")
+        ),
+        "reg_success_msg": getattr(settings, "MFA_SUCCESS_REGISTRATION_MSG"),
+    }
diff --git a/mfa/Email.py b/mfa/Email.py
index 010d6d5..d5535cd 100644
--- a/mfa/Email.py
+++ b/mfa/Email.py
@@ -1,66 +1,94 @@
 from django.shortcuts import render
 from django.views.decorators.cache import never_cache
 from django.template.context_processors import csrf
-import datetime,random
+import datetime, random
 from random import randint
 from .models import *
-#from django.template.context import RequestContext
+
+# from django.template.context import RequestContext
 from .views import login
 from .Common import send
 
-def sendEmail(request,username,secret):
+
+def sendEmail(request, username, secret):
     """Send Email to the user after rendering `mfa_email_token_template`"""
     from django.contrib.auth import get_user_model
+
     User = get_user_model()
-    key = getattr(User, 'USERNAME_FIELD', 'username')
+    key = getattr(User, "USERNAME_FIELD", "username")
     kwargs = {key: username}
     user = User.objects.get(**kwargs)
-    res=render(request,"mfa_email_token_template.html",{"request":request,"user":user,'otp':secret})
-    return send([user.email],"OTP", res.content.decode())
+    res = render(
+        request,
+        "mfa_email_token_template.html",
+        {"request": request, "user": user, "otp": secret},
+    )
+    return send([user.email], "OTP", res.content.decode())
+
 
 @never_cache
 def start(request):
     """Start adding email as a 2nd factor"""
     context = csrf(request)
     if request.method == "POST":
-        if request.session["email_secret"] == request.POST["otp"]:  #if successful
-            uk=User_Keys()
-            uk.username=request.user.username
-            uk.key_type="Email"
-            uk.enabled=1
+        if request.session["email_secret"] == request.POST["otp"]:  # if successful
+            uk = User_Keys()
+            uk.username = request.user.username
+            uk.key_type = "Email"
+            uk.enabled = 1
             uk.save()
             from django.http import HttpResponseRedirect
+
             try:
                 from django.core.urlresolvers import reverse
             except:
                 from django.urls import reverse
-            return HttpResponseRedirect(reverse(getattr(settings,'MFA_REDIRECT_AFTER_REGISTRATION','mfa_home')))
+            return HttpResponseRedirect(
+                reverse(
+                    getattr(settings, "MFA_REDIRECT_AFTER_REGISTRATION", "mfa_home")
+                )
+            )
         context["invalid"] = True
     else:
-        request.session["email_secret"] = str(randint(0,100000))  #generate a random integer
+        request.session["email_secret"] = str(
+            randint(0, 100000)
+        )  # generate a random integer
         if sendEmail(request, request.user.username, request.session["email_secret"]):
             context["sent"] = True
-    return render(request,"Email/Add.html", context)
+    return render(request, "Email/Add.html", context)
+
+
 @never_cache
 def auth(request):
     """Authenticating the user by email."""
-    context=csrf(request)
-    if request.method=="POST":
-        if request.session["email_secret"]==request.POST["otp"].strip():
-            uk = User_Keys.objects.get(username=request.session["base_username"], key_type="Email")
-            mfa = {"verified": True, "method": "Email","id":uk.id}
+    context = csrf(request)
+    if request.method == "POST":
+        if request.session["email_secret"] == request.POST["otp"].strip():
+            uk = User_Keys.objects.get(
+                username=request.session["base_username"], key_type="Email"
+            )
+            mfa = {"verified": True, "method": "Email", "id": uk.id}
             if getattr(settings, "MFA_RECHECK", False):
-                mfa["next_check"] = datetime.datetime.timestamp(datetime.datetime.now() + datetime.timedelta(
-                    seconds = random.randint(settings.MFA_RECHECK_MIN, settings.MFA_RECHECK_MAX)))
+                mfa["next_check"] = datetime.datetime.timestamp(
+                    datetime.datetime.now()
+                    + datetime.timedelta(
+                        seconds=random.randint(
+                            settings.MFA_RECHECK_MIN, settings.MFA_RECHECK_MAX
+                        )
+                    )
+                )
             request.session["mfa"] = mfa
 
             from django.utils import timezone
-            uk.last_used=timezone.now()
+
+            uk.last_used = timezone.now()
             uk.save()
             return login(request)
-        context["invalid"]=True
+        context["invalid"] = True
     else:
         request.session["email_secret"] = str(randint(0, 100000))
-        if sendEmail(request, request.session["base_username"], request.session["email_secret"]):
+        if sendEmail(
+            request, request.session["base_username"], request.session["email_secret"]
+        ):
             context["sent"] = True
-    return render(request,"Email/Auth.html", context)
+    return render(request, "Email/Auth.html", context)
diff --git a/mfa/FIDO2.py b/mfa/FIDO2.py
index 98a6e5e..2a51b4b 100644
--- a/mfa/FIDO2.py
+++ b/mfa/FIDO2.py
@@ -1,9 +1,12 @@
+import traceback
+
 from fido2.client import ClientData
 from fido2.server import Fido2Server, PublicKeyCredentialRpEntity
 from fido2.ctap2 import AttestationObject, AuthenticatorData
 from django.template.context_processors import csrf
 from django.views.decorators.csrf import csrf_exempt
 from django.shortcuts import render
+
 # from django.template.context import RequestContext
 import simplejson
 from fido2 import cbor
@@ -35,14 +38,19 @@ def getServer():
 def begin_registeration(request):
     """Starts registering a new FIDO Device, called from API"""
     server = getServer()
-    registration_data, state = server.register_begin({
-        u'id': request.user.username.encode("utf8"),
-        u'name': (request.user.first_name + " " + request.user.last_name),
-        u'displayName': request.user.username,
-    }, getUserCredentials(request.user.username))
-    request.session['fido_state'] = state
+    registration_data, state = server.register_begin(
+        {
+            u"id": request.user.username.encode("utf8"),
+            u"name": (request.user.first_name + " " + request.user.last_name),
+            u"displayName": request.user.username,
+        },
+        getUserCredentials(request.user.username),
+    )
+    request.session["fido_state"] = state
 
-    return HttpResponse(cbor.encode(registration_data), content_type = 'application/octet-stream')
+    return HttpResponse(
+        cbor.encode(registration_data), content_type="application/octet-stream"
+    )
 
 
 @csrf_exempt
@@ -51,29 +59,30 @@ def complete_reg(request):
     try:
         data = cbor.decode(request.body)
 
-        client_data = ClientData(data['clientDataJSON'])
-        att_obj = AttestationObject((data['attestationObject']))
+        client_data = ClientData(data["clientDataJSON"])
+        att_obj = AttestationObject((data["attestationObject"]))
         server = getServer()
         auth_data = server.register_complete(
-            request.session['fido_state'],
-            client_data,
-            att_obj
+            request.session["fido_state"], client_data, att_obj
         )
         encoded = websafe_encode(auth_data.credential_data)
         uk = User_Keys()
         uk.username = request.user.username
-        uk.properties = {"device": encoded, "type": att_obj.fmt, }
+        uk.properties = {
+            "device": encoded,
+            "type": att_obj.fmt,
+        }
         uk.owned_by_enterprise = getattr(settings, "MFA_OWNED_BY_ENTERPRISE", False)
         uk.key_type = "FIDO2"
         uk.save()
-        return HttpResponse(simplejson.dumps({'status': 'OK'}))
+        return HttpResponse(simplejson.dumps({"status": "OK"}))
     except Exception as exp:
-        try:
-            from raven.contrib.django.raven_compat.models import client
-            client.captureException()
-        except:
-            pass
-        return HttpResponse(simplejson.dumps({'status': 'ERR', "message": "Error on server, please try again later"}))
+        print(traceback.format_exc())
+        return HttpResponse(
+            simplejson.dumps(
+                {"status": "ERR", "message": "Error on server, please try again later"}
+            )
+        )
 
 
 def start(request):
@@ -85,8 +94,10 @@ def start(request):
 
 def getUserCredentials(username):
     credentials = []
-    for uk in User_Keys.objects.filter(username = username, key_type = "FIDO2"):
-        credentials.append(AttestedCredentialData(websafe_decode(uk.properties["device"])))
+    for uk in User_Keys.objects.filter(username=username, key_type="FIDO2"):
+        credentials.append(
+            AttestedCredentialData(websafe_decode(uk.properties["device"]))
+        )
     return credentials
 
 
@@ -97,10 +108,12 @@ def auth(request):
 
 def authenticate_begin(request):
     server = getServer()
-    credentials = getUserCredentials(request.session.get("base_username", request.user.username))
+    credentials = getUserCredentials(
+        request.session.get("base_username", request.user.username)
+    )
     auth_data, state = server.authenticate_begin(credentials)
-    request.session['fido_state'] = state
-    return HttpResponse(cbor.encode(auth_data), content_type = "application/octet-stream")
+    request.session["fido_state"] = state
+    return HttpResponse(cbor.encode(auth_data), content_type="application/octet-stream")
 
 
 @csrf_exempt
@@ -111,49 +124,71 @@ def authenticate_complete(request):
         server = getServer()
         credentials = getUserCredentials(username)
         data = cbor.decode(request.body)
-        credential_id = data['credentialId']
-        client_data = ClientData(data['clientDataJSON'])
-        auth_data = AuthenticatorData(data['authenticatorData'])
-        signature = data['signature']
+        credential_id = data["credentialId"]
+        client_data = ClientData(data["clientDataJSON"])
+        auth_data = AuthenticatorData(data["authenticatorData"])
+        signature = data["signature"]
         try:
             cred = server.authenticate_complete(
-                request.session.pop('fido_state'),
+                request.session.pop("fido_state"),
                 credentials,
                 credential_id,
                 client_data,
                 auth_data,
-                signature
+                signature,
             )
         except ValueError:
-            return HttpResponse(simplejson.dumps({'status': "ERR",
-                                                  "message": "Wrong challenge received, make sure that this is your security and try again."}),
-                                content_type = "application/json")
+            return HttpResponse(
+                simplejson.dumps(
+                    {
+                        "status": "ERR",
+                        "message": "Wrong challenge received, make sure that this is your security and try again.",
+                    }
+                ),
+                content_type="application/json",
+            )
         except Exception as excep:
-            try:
-                from raven.contrib.django.raven_compat.models import client
-                client.captureException()
-            except:
-                pass
-            return HttpResponse(simplejson.dumps({'status': "ERR",
-                                                  "message": excep.message}),
-                                content_type = "application/json")
+            print(traceback.format_exc())
+            return HttpResponse(
+                simplejson.dumps({"status": "ERR", "message": excep.message}),
+                content_type="application/json",
+            )
 
         if request.session.get("mfa_recheck", False):
             import time
+
             request.session["mfa"]["rechecked_at"] = time.time()
-            return HttpResponse(simplejson.dumps({'status': "OK"}),
-                                content_type = "application/json")
+            return HttpResponse(
+                simplejson.dumps({"status": "OK"}), content_type="application/json"
+            )
         else:
             import random
-            keys = User_Keys.objects.filter(username = username, key_type = "FIDO2", enabled = 1)
+
+            keys = User_Keys.objects.filter(
+                username=username, key_type="FIDO2", enabled=1
+            )
             for k in keys:
-                if AttestedCredentialData(websafe_decode(k.properties["device"])).credential_id == cred.credential_id:
+                if (
+                    AttestedCredentialData(
+                        websafe_decode(k.properties["device"])
+                    ).credential_id
+                    == cred.credential_id
+                ):
                     k.last_used = timezone.now()
                     k.save()
-                    mfa = {"verified": True, "method": "FIDO2", 'id': k.id}
+                    mfa = {"verified": True, "method": "FIDO2", "id": k.id}
                     if getattr(settings, "MFA_RECHECK", False):
-                        mfa["next_check"] = datetime.datetime.timestamp((datetime.datetime.now() + datetime.timedelta(
-                            seconds = random.randint(settings.MFA_RECHECK_MIN, settings.MFA_RECHECK_MAX))))
+                        mfa["next_check"] = datetime.datetime.timestamp(
+                            (
+                                datetime.datetime.now()
+                                + datetime.timedelta(
+                                    seconds=random.randint(
+                                        settings.MFA_RECHECK_MIN,
+                                        settings.MFA_RECHECK_MAX,
+                                    )
+                                )
+                            )
+                        )
                     request.session["mfa"] = mfa
                     try:
                         authenticated = request.user.is_authenticated
@@ -161,11 +196,20 @@ def authenticate_complete(request):
                         authenticated = request.user.is_authenticated()
                     if not authenticated:
                         res = login(request)
-                        if not "location" in res: return reset_cookie(request)
-                        return HttpResponse(simplejson.dumps({'status': "OK", "redirect": res["location"]}),
-                                            content_type = "application/json")
-                    return HttpResponse(simplejson.dumps({'status': "OK"}),
-                                        content_type = "application/json")
+                        if not "location" in res:
+                            return reset_cookie(request)
+                        return HttpResponse(
+                            simplejson.dumps(
+                                {"status": "OK", "redirect": res["location"]}
+                            ),
+                            content_type="application/json",
+                        )
+                    return HttpResponse(
+                        simplejson.dumps({"status": "OK"}),
+                        content_type="application/json",
+                    )
     except Exception as exp:
-        return HttpResponse(simplejson.dumps({'status': "ERR", "message": exp.message}),
-                            content_type = "application/json")
+        return HttpResponse(
+            simplejson.dumps({"status": "ERR", "message": str(exp)}),
+            content_type="application/json",
+        )
diff --git a/mfa/TrustedDevice.py b/mfa/TrustedDevice.py
index 94b2136..2b6dc66 100644
--- a/mfa/TrustedDevice.py
+++ b/mfa/TrustedDevice.py
@@ -8,127 +8,158 @@ from .models import *
 import user_agents
 from django.utils import timezone
 
+
 def id_generator(size=6, chars=string.ascii_uppercase + string.digits):
-    x=''.join(random.choice(chars) for _ in range(size))
-    if not User_Keys.objects.filter(properties__shas="$.key="+x).exists(): return x
-    else: return id_generator(size,chars)
+    x = "".join(random.choice(chars) for _ in range(size))
+    if not User_Keys.objects.filter(properties__shas="$.key=" + x).exists():
+        return x
+    else:
+        return id_generator(size, chars)
+
 
 def getUserAgent(request):
-    id=id=request.session.get("td_id",None)
+    id = id = request.session.get("td_id", None)
     if id:
-        tk=User_Keys.objects.get(id=id)
-        if tk.properties.get("user_agent","")!="":
+        tk = User_Keys.objects.get(id=id)
+        if tk.properties.get("user_agent", "") != "":
             ua = user_agents.parse(tk.properties["user_agent"])
-            res = render(None, "TrustedDevices/user-agent.html", context={"ua":ua})
+            res = render(None, "TrustedDevices/user-agent.html", context={"ua": ua})
             return HttpResponse(res)
     return HttpResponse("")
 
+
 def trust_device(request):
     tk = User_Keys.objects.get(id=request.session["td_id"])
-    tk.properties["status"]="trusted"
+    tk.properties["status"] = "trusted"
     tk.save()
     del request.session["td_id"]
     return HttpResponse("OK")
 
+
 def checkTrusted(request):
     res = ""
-    id=request.session.get("td_id","")
-    if id!="":
+    id = request.session.get("td_id", "")
+    if id != "":
         try:
             tk = User_Keys.objects.get(id=id)
-            if tk.properties["status"] == "trusted": res = "OK"
+            if tk.properties["status"] == "trusted":
+                res = "OK"
         except:
             pass
     return HttpResponse(res)
 
+
 def getCookie(request):
     tk = User_Keys.objects.get(id=request.session["td_id"])
 
     if tk.properties["status"] == "trusted":
-        context={"added":True}
-        response = render(request,"TrustedDevices/Done.html", context)
+        context = {"added": True}
+        response = render(request, "TrustedDevices/Done.html", context)
         from datetime import datetime, timedelta
+
         expires = datetime.now() + timedelta(days=180)
-        tk.expires=expires
+        tk.expires = expires
         tk.save()
         response.set_cookie("deviceid", tk.properties["signature"], expires=expires)
         return response
 
+
 def add(request):
-    context=csrf(request)
-    if request.method=="GET":
-        return render(request,"TrustedDevices/Add.html",context)
+    context = csrf(request)
+    if request.method == "GET":
+        return render(request, "TrustedDevices/Add.html", context)
     else:
-        key=request.POST["key"].replace("-","").replace(" ","").upper()
+        key = request.POST["key"].replace("-", "").replace(" ", "").upper()
         context["username"] = request.POST["username"]
         context["key"] = request.POST["key"]
-        trusted_keys=User_Keys.objects.filter(username=request.POST["username"],properties__has="$.key="+key)
-        cookie=False
+        trusted_keys = User_Keys.objects.filter(
+            username=request.POST["username"], properties__has="$.key=" + key
+        )
+        cookie = False
         if trusted_keys.exists():
-            tk=trusted_keys[0]
-            request.session["td_id"]=tk.id
-            ua=request.META['HTTP_USER_AGENT']
-            agent=user_agents.parse(ua)
+            tk = trusted_keys[0]
+            request.session["td_id"] = tk.id
+            ua = request.META["HTTP_USER_AGENT"]
+            agent = user_agents.parse(ua)
             if agent.is_pc:
-                context["invalid"]="This is a PC, it can't used as a trusted device."
+                context["invalid"] = "This is a PC, it can't used as a trusted device."
             else:
-                tk.properties["user_agent"]=ua
+                tk.properties["user_agent"] = ua
                 tk.save()
-                context["success"]=True
+                context["success"] = True
             # tk.properties["user_agent"]=ua
             # tk.save()
             # context["success"]=True
 
         else:
-            context["invalid"]="The username or key is wrong, please check and try again."
+            context[
+                "invalid"
+            ] = "The username or key is wrong, please check and try again."
+
+        return render(request, "TrustedDevices/Add.html", context)
 
-        return  render(request,"TrustedDevices/Add.html", context)
 
 def start(request):
-    if User_Keys.objects.filter(username=request.user.username,key_type="Trusted Device").count()>= 2:
-        return render(request,"TrustedDevices/start.html",{"not_allowed":True})
-    td=None
-    if not request.session.get("td_id",None):
-        td=User_Keys()
-        td.username=request.user.username
-        td.properties={"key":id_generator(),"status":"adding"}
-        td.key_type="Trusted Device"
+    if (
+        User_Keys.objects.filter(
+            username=request.user.username, key_type="Trusted Device"
+        ).count()
+        >= 2
+    ):
+        return render(request, "TrustedDevices/start.html", {"not_allowed": True})
+    td = None
+    if not request.session.get("td_id", None):
+        td = User_Keys()
+        td.username = request.user.username
+        td.properties = {"key": id_generator(), "status": "adding"}
+        td.key_type = "Trusted Device"
         td.save()
-        request.session["td_id"]=td.id
+        request.session["td_id"] = td.id
     try:
-        if td==None: td=User_Keys.objects.get(id=request.session["td_id"])
-        context={"key":td.properties["key"]}
+        if td == None:
+            td = User_Keys.objects.get(id=request.session["td_id"])
+        context = {"key": td.properties["key"]}
     except:
         del request.session["td_id"]
         return start(request)
-    return render(request,"TrustedDevices/start.html",context)
+    return render(request, "TrustedDevices/start.html", context)
+
 
 def send_email(request):
-    body=render(request,"TrustedDevices/email.html",{}).content
+    body = render(request, "TrustedDevices/email.html", {}).content
     from .Common import send
-    e=request.user.email
-    if e=="":
-        e=request.session.get("user",{}).get("email","")
-    if e=="":
+
+    e = request.user.email
+    if e == "":
+        e = request.session.get("user", {}).get("email", "")
+    if e == "":
         res = "User has no email on the system."
-    elif send([e],"Add Trusted Device Link",body):
-        res="Sent Successfully"
+    elif send([e], "Add Trusted Device Link", body):
+        res = "Sent Successfully"
     else:
-        res="Error occured, please try again later."
+        res = "Error occured, please try again later."
     return HttpResponse(res)
 
 
 def verify(request):
-    if request.COOKIES.get('deviceid',None):
+    if request.COOKIES.get("deviceid", None):
         from jose import jwt
-        json= jwt.decode(request.COOKIES.get('deviceid'),settings.SECRET_KEY)
-        if json["username"].lower()== request.session['base_username'].lower():
+
+        json = jwt.decode(request.COOKIES.get("deviceid"), settings.SECRET_KEY)
+        if json["username"].lower() == request.session["base_username"].lower():
             try:
-                uk = User_Keys.objects.get(username=request.POST["username"].lower(), properties__has="$.key=" + json["key"])
+                uk = User_Keys.objects.get(
+                    username=request.POST["username"].lower(),
+                    properties__has="$.key=" + json["key"],
+                )
                 if uk.enabled and uk.properties["status"] == "trusted":
-                    uk.last_used=timezone.now()
+                    uk.last_used = timezone.now()
                     uk.save()
-                    request.session["mfa"] = {"verified": True, "method": "Trusted Device","id":uk.id}
+                    request.session["mfa"] = {
+                        "verified": True,
+                        "method": "Trusted Device",
+                        "id": uk.id,
+                    }
                     return True
             except:
                 return False
diff --git a/mfa/U2F.py b/mfa/U2F.py
index fe5ea19..2ad5f08 100644
--- a/mfa/U2F.py
+++ b/mfa/U2F.py
@@ -1,12 +1,16 @@
-
-from u2flib_server.u2f import (begin_registration, begin_authentication,
-                               complete_registration, complete_authentication)
+from u2flib_server.u2f import (
+    begin_registration,
+    begin_authentication,
+    complete_registration,
+    complete_authentication,
+)
 from cryptography import x509
 from cryptography.hazmat.backends import default_backend
 from cryptography.hazmat.primitives.serialization import Encoding
 from django.shortcuts import render
 import simplejson
-#from django.template.context import RequestContext
+
+# from django.template.context import RequestContext
 from django.template.context_processors import csrf
 from django.conf import settings
 from django.http import HttpResponse
@@ -15,97 +19,127 @@ from .views import login
 import datetime
 from django.utils import timezone
 
+
 def recheck(request):
     context = csrf(request)
-    context["mode"]="recheck"
+    context["mode"] = "recheck"
     s = sign(request.user.username)
     request.session["_u2f_challenge_"] = s[0]
     context["token"] = s[1]
-    request.session["mfa_recheck"]=True
-    return render(request,"U2F/recheck.html", context)
+    request.session["mfa_recheck"] = True
+    return render(request, "U2F/recheck.html", context)
+
 
 def process_recheck(request):
-    x=validate(request,request.user.username)
-    if x==True:
+    x = validate(request, request.user.username)
+    if x == True:
         import time
+
         request.session["mfa"]["rechecked_at"] = time.time()
-        return HttpResponse(simplejson.dumps({"recheck":True}),content_type="application/json")
+        return HttpResponse(
+            simplejson.dumps({"recheck": True}), content_type="application/json"
+        )
     return x
 
+
 def check_errors(request, data):
     if "errorCode" in data:
-        if data["errorCode"] == 0: return True
+        if data["errorCode"] == 0:
+            return True
         if data["errorCode"] == 4:
             return HttpResponse("Invalid Security Key")
         if data["errorCode"] == 1:
             return auth(request)
     return True
-def validate(request,username):
+
+
+def validate(request, username):
     import datetime, random
 
     data = simplejson.loads(request.POST["response"])
 
-    res= check_errors(request,data)
-    if res!=True:
+    res = check_errors(request, data)
+    if res != True:
         return res
 
-    challenge = request.session.pop('_u2f_challenge_')
+    challenge = request.session.pop("_u2f_challenge_")
     device, c, t = complete_authentication(challenge, data, [settings.U2F_APPID])
 
-    key=User_Keys.objects.get(username=username,properties__shas="$.device.publicKey=%s"%device["publicKey"])
-    key.last_used=timezone.now()
+    key = User_Keys.objects.get(
+        username=username,
+        properties__shas="$.device.publicKey=%s" % device["publicKey"],
+    )
+    key.last_used = timezone.now()
     key.save()
-    mfa = {"verified": True, "method": "U2F","id":key.id}
+    mfa = {"verified": True, "method": "U2F", "id": key.id}
     if getattr(settings, "MFA_RECHECK", False):
-        mfa["next_check"] = datetime.datetime.timestamp((datetime.datetime.now()
-                                 + datetime.timedelta(
-                    seconds=random.randint(settings.MFA_RECHECK_MIN, settings.MFA_RECHECK_MAX))))
+        mfa["next_check"] = datetime.datetime.timestamp(
+            (
+                datetime.datetime.now()
+                + datetime.timedelta(
+                    seconds=random.randint(
+                        settings.MFA_RECHECK_MIN, settings.MFA_RECHECK_MAX
+                    )
+                )
+            )
+        )
     request.session["mfa"] = mfa
     return True
 
-def auth(request):
-    context=csrf(request)
-    s=sign(request.session["base_username"])
-    request.session["_u2f_challenge_"]=s[0]
-    context["token"]=s[1]
 
-    return render(request,"U2F/Auth.html")
+def auth(request):
+    context = csrf(request)
+    s = sign(request.session["base_username"])
+    request.session["_u2f_challenge_"] = s[0]
+    context["token"] = s[1]
+
+    return render(request, "U2F/Auth.html")
+
 
 def start(request):
     enroll = begin_registration(settings.U2F_APPID, [])
-    request.session['_u2f_enroll_'] = enroll.json
-    context=csrf(request)
-    context["token"]=simplejson.dumps(enroll.data_for_client)
+    request.session["_u2f_enroll_"] = enroll.json
+    context = csrf(request)
+    context["token"] = simplejson.dumps(enroll.data_for_client)
     context.update(get_redirect_url())
-    return render(request,"U2F/Add.html",context)
+    return render(request, "U2F/Add.html", context)
 
 
 def bind(request):
     import hashlib
-    enroll = request.session['_u2f_enroll_']
-    data=simplejson.loads(request.POST["response"])
+
+    enroll = request.session["_u2f_enroll_"]
+    data = simplejson.loads(request.POST["response"])
     device, cert = complete_registration(enroll, data, [settings.U2F_APPID])
     cert = x509.load_der_x509_certificate(cert, default_backend())
-    cert_hash=hashlib.md5(cert.public_bytes(Encoding.PEM)).hexdigest()
-    q=User_Keys.objects.filter(key_type="U2F", properties__icontains= cert_hash)
+    cert_hash = hashlib.md5(cert.public_bytes(Encoding.PEM)).hexdigest()
+    q = User_Keys.objects.filter(key_type="U2F", properties__icontains=cert_hash)
     if q.exists():
-        return HttpResponse("This key is registered before, it can't be registered again.")
-    User_Keys.objects.filter(username=request.user.username,key_type="U2F").delete()
+        return HttpResponse(
+            "This key is registered before, it can't be registered again."
+        )
+    User_Keys.objects.filter(username=request.user.username, key_type="U2F").delete()
     uk = User_Keys()
     uk.username = request.user.username
     uk.owned_by_enterprise = getattr(settings, "MFA_OWNED_BY_ENTERPRISE", False)
-    uk.properties = {"device":simplejson.loads(device.json),"cert":cert_hash}
+    uk.properties = {"device": simplejson.loads(device.json), "cert": cert_hash}
     uk.key_type = "U2F"
     uk.save()
     return HttpResponse("OK")
 
+
 def sign(username):
-    u2f_devices=[d.properties["device"] for d in User_Keys.objects.filter(username=username,key_type="U2F")]
+    u2f_devices = [
+        d.properties["device"]
+        for d in User_Keys.objects.filter(username=username, key_type="U2F")
+    ]
     challenge = begin_authentication(settings.U2F_APPID, u2f_devices)
-    return [challenge.json,simplejson.dumps(challenge.data_for_client)]
+    return [challenge.json, simplejson.dumps(challenge.data_for_client)]
+
 
 def verify(request):
-    x= validate(request,request.session["base_username"])
-    if x==True:
+    x = validate(request, request.session["base_username"])
+    if x == True:
         return login(request)
-    else: return x
+    else:
+        return x
diff --git a/mfa/__init__.py b/mfa/__init__.py
index d9d106a..8a124bf 100644
--- a/mfa/__init__.py
+++ b/mfa/__init__.py
@@ -1 +1 @@
-__version__="2.2.0"
+__version__ = "2.2.0"
diff --git a/mfa/apps.py b/mfa/apps.py
index cb5ecca..f9816d4 100644
--- a/mfa/apps.py
+++ b/mfa/apps.py
@@ -1,4 +1,6 @@
 from django.apps import AppConfig
+
+
 class myAppNameConfig(AppConfig):
-    name = 'mfa'
-    verbose_name = 'A Much Better Name'
\ No newline at end of file
+    name = "mfa"
+    verbose_name = "A Much Better Name"
diff --git a/mfa/helpers.py b/mfa/helpers.py
index a61c769..e22e573 100644
--- a/mfa/helpers.py
+++ b/mfa/helpers.py
@@ -3,30 +3,45 @@ from .models import *
 from . import TrustedDevice, U2F, FIDO2, totp
 import simplejson
 from django.shortcuts import HttpResponse
-from mfa.views import verify,goto
-def has_mfa(request,username):
-    if User_Keys.objects.filter(username=username,enabled=1).count()>0:
+from mfa.views import verify, goto
+
+
+def has_mfa(request, username):
+    if User_Keys.objects.filter(username=username, enabled=1).count() > 0:
         return verify(request, username)
     return False
 
-def is_mfa(request,ignore_methods=[]):
-    if request.session.get("mfa",{}).get("verified",False):
-        if not request.session.get("mfa",{}).get("method",None) in ignore_methods:
+
+def is_mfa(request, ignore_methods=[]):
+    if request.session.get("mfa", {}).get("verified", False):
+        if not request.session.get("mfa", {}).get("method", None) in ignore_methods:
             return True
     return False
 
+
 def recheck(request):
-    method=request.session.get("mfa",{}).get("method",None)
+    method = request.session.get("mfa", {}).get("method", None)
     if not method:
-        return HttpResponse(simplejson.dumps({"res":False}),content_type="application/json")
-    if method=="Trusted Device":
-        return HttpResponse(simplejson.dumps({"res":TrustedDevice.verify(request)}),content_type="application/json")
-    elif method=="U2F":
-        return HttpResponse(simplejson.dumps({"html": U2F.recheck(request).content}), content_type="application/json")
+        return HttpResponse(
+            simplejson.dumps({"res": False}), content_type="application/json"
+        )
+    if method == "Trusted Device":
+        return HttpResponse(
+            simplejson.dumps({"res": TrustedDevice.verify(request)}),
+            content_type="application/json",
+        )
+    elif method == "U2F":
+        return HttpResponse(
+            simplejson.dumps({"html": U2F.recheck(request).content}),
+            content_type="application/json",
+        )
     elif method == "FIDO2":
-        return HttpResponse(simplejson.dumps({"html": FIDO2.recheck(request).content}), content_type="application/json")
-    elif method=="TOTP":
-        return HttpResponse(simplejson.dumps({"html": totp.recheck(request).content}), content_type="application/json")
-
-
-
+        return HttpResponse(
+            simplejson.dumps({"html": FIDO2.recheck(request).content}),
+            content_type="application/json",
+        )
+    elif method == "TOTP":
+        return HttpResponse(
+            simplejson.dumps({"html": totp.recheck(request).content}),
+            content_type="application/json",
+        )
diff --git a/mfa/middleware.py b/mfa/middleware.py
index 4923416..4acc51f 100644
--- a/mfa/middleware.py
+++ b/mfa/middleware.py
@@ -2,12 +2,18 @@ import time
 from django.http import HttpResponseRedirect
 from django.core.urlresolvers import reverse
 from django.conf import settings
+
+
 def process(request):
-    next_check=request.session.get('mfa',{}).get("next_check",False)
-    if not next_check: return None
-    now=int(time.time())
+    next_check = request.session.get("mfa", {}).get("next_check", False)
+    if not next_check:
+        return None
+    now = int(time.time())
     if now >= next_check:
-        method=request.session["mfa"]["method"]
+        method = request.session["mfa"]["method"]
         path = request.META["PATH_INFO"]
-        return HttpResponseRedirect(reverse(method+"_auth")+"?next=%s"%(settings.BASE_URL + path).replace("//", "/"))
-    return None
\ No newline at end of file
+        return HttpResponseRedirect(
+            reverse(method + "_auth")
+            + "?next=%s" % (settings.BASE_URL + path).replace("//", "/")
+        )
+    return None
diff --git a/mfa/migrations/0001_initial.py b/mfa/migrations/0001_initial.py
index c243f37..bce7c86 100644
--- a/mfa/migrations/0001_initial.py
+++ b/mfa/migrations/0001_initial.py
@@ -6,17 +6,24 @@ from django.db import models, migrations
 
 class Migration(migrations.Migration):
 
-    dependencies = [
-    ]
+    dependencies = []
 
     operations = [
         migrations.CreateModel(
-            name='User_Keys',
+            name="User_Keys",
             fields=[
-                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
-                ('username', models.CharField(max_length=50)),
-                ('secret_key', models.CharField(max_length=15)),
-                ('added_on', models.DateTimeField(auto_now_add=True)),
+                (
+                    "id",
+                    models.AutoField(
+                        verbose_name="ID",
+                        serialize=False,
+                        auto_created=True,
+                        primary_key=True,
+                    ),
+                ),
+                ("username", models.CharField(max_length=50)),
+                ("secret_key", models.CharField(max_length=15)),
+                ("added_on", models.DateTimeField(auto_now_add=True)),
             ],
         ),
     ]
diff --git a/mfa/migrations/0002_user_keys_key_type.py b/mfa/migrations/0002_user_keys_key_type.py
index 5cb4aef..6738181 100644
--- a/mfa/migrations/0002_user_keys_key_type.py
+++ b/mfa/migrations/0002_user_keys_key_type.py
@@ -7,13 +7,13 @@ from django.db import models, migrations
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('mfa', '0001_initial'),
+        ("mfa", "0001_initial"),
     ]
 
     operations = [
         migrations.AddField(
-            model_name='user_keys',
-            name='key_type',
-            field=models.CharField(default=b'TOTP', max_length=25),
+            model_name="user_keys",
+            name="key_type",
+            field=models.CharField(default=b"TOTP", max_length=25),
         ),
     ]
diff --git a/mfa/migrations/0003_auto_20181114_2159.py b/mfa/migrations/0003_auto_20181114_2159.py
index 49dfd5e..d9b4797 100644
--- a/mfa/migrations/0003_auto_20181114_2159.py
+++ b/mfa/migrations/0003_auto_20181114_2159.py
@@ -7,13 +7,13 @@ from django.db import models, migrations
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('mfa', '0002_user_keys_key_type'),
+        ("mfa", "0002_user_keys_key_type"),
     ]
 
     operations = [
         migrations.AlterField(
-            model_name='user_keys',
-            name='secret_key',
+            model_name="user_keys",
+            name="secret_key",
             field=models.CharField(max_length=32),
         ),
     ]
diff --git a/mfa/migrations/0004_user_keys_enabled.py b/mfa/migrations/0004_user_keys_enabled.py
index b0bcb78..372e265 100644
--- a/mfa/migrations/0004_user_keys_enabled.py
+++ b/mfa/migrations/0004_user_keys_enabled.py
@@ -7,13 +7,13 @@ from django.db import models, migrations
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('mfa', '0003_auto_20181114_2159'),
+        ("mfa", "0003_auto_20181114_2159"),
     ]
 
     operations = [
         migrations.AddField(
-            model_name='user_keys',
-            name='enabled',
+            model_name="user_keys",
+            name="enabled",
             field=models.BooleanField(default=True),
         ),
     ]
diff --git a/mfa/migrations/0005_auto_20181115_2014.py b/mfa/migrations/0005_auto_20181115_2014.py
index 8f9b76d..0084cb0 100644
--- a/mfa/migrations/0005_auto_20181115_2014.py
+++ b/mfa/migrations/0005_auto_20181115_2014.py
@@ -7,24 +7,25 @@ import jsonfield.fields
 
 def modify_json(apps, schema_editor):
     from django.conf import settings
+
     if "mysql" in settings.DATABASES.get("default", {}).get("engine", ""):
         migrations.RunSQL("alter table mfa_user_keys modify column properties json;")
 
 
 class Migration(migrations.Migration):
     dependencies = [
-        ('mfa', '0004_user_keys_enabled'),
+        ("mfa", "0004_user_keys_enabled"),
     ]
 
     operations = [
         migrations.RemoveField(
-            model_name='user_keys',
-            name='secret_key',
+            model_name="user_keys",
+            name="secret_key",
         ),
         migrations.AddField(
-            model_name='user_keys',
-            name='properties',
+            model_name="user_keys",
+            name="properties",
             field=jsonfield.fields.JSONField(null=True),
         ),
-        migrations.RunPython(modify_json)
+        migrations.RunPython(modify_json),
     ]
diff --git a/mfa/migrations/0006_trusted_devices.py b/mfa/migrations/0006_trusted_devices.py
index de14a0e..3ae6504 100644
--- a/mfa/migrations/0006_trusted_devices.py
+++ b/mfa/migrations/0006_trusted_devices.py
@@ -7,21 +7,29 @@ from django.db import models, migrations
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('mfa', '0005_auto_20181115_2014'),
+        ("mfa", "0005_auto_20181115_2014"),
     ]
 
     operations = [
         migrations.CreateModel(
-            name='Trusted_Devices',
+            name="Trusted_Devices",
             fields=[
-                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
-                ('signature', models.CharField(max_length=255)),
-                ('key', models.CharField(max_length=6)),
-                ('username', models.CharField(max_length=50)),
-                ('user_agent', models.CharField(max_length=255)),
-                ('status', models.CharField(default=b'adding', max_length=255)),
-                ('added_on', models.DateTimeField(auto_now_add=True)),
-                ('last_used', models.DateTimeField(default=None, null=True)),
+                (
+                    "id",
+                    models.AutoField(
+                        verbose_name="ID",
+                        serialize=False,
+                        auto_created=True,
+                        primary_key=True,
+                    ),
+                ),
+                ("signature", models.CharField(max_length=255)),
+                ("key", models.CharField(max_length=6)),
+                ("username", models.CharField(max_length=50)),
+                ("user_agent", models.CharField(max_length=255)),
+                ("status", models.CharField(default=b"adding", max_length=255)),
+                ("added_on", models.DateTimeField(auto_now_add=True)),
+                ("last_used", models.DateTimeField(default=None, null=True)),
             ],
         ),
     ]
diff --git a/mfa/migrations/0007_auto_20181230_1549.py b/mfa/migrations/0007_auto_20181230_1549.py
index 965bb9e..fe3350f 100644
--- a/mfa/migrations/0007_auto_20181230_1549.py
+++ b/mfa/migrations/0007_auto_20181230_1549.py
@@ -7,16 +7,16 @@ from django.db import models, migrations
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('mfa', '0006_trusted_devices'),
+        ("mfa", "0006_trusted_devices"),
     ]
 
     operations = [
         migrations.DeleteModel(
-            name='Trusted_Devices',
+            name="Trusted_Devices",
         ),
         migrations.AddField(
-            model_name='user_keys',
-            name='expires',
+            model_name="user_keys",
+            name="expires",
             field=models.DateTimeField(default=None, null=True, blank=True),
         ),
     ]
diff --git a/mfa/migrations/0008_user_keys_last_used.py b/mfa/migrations/0008_user_keys_last_used.py
index b555762..76d42f5 100644
--- a/mfa/migrations/0008_user_keys_last_used.py
+++ b/mfa/migrations/0008_user_keys_last_used.py
@@ -7,13 +7,13 @@ from django.db import models, migrations
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('mfa', '0007_auto_20181230_1549'),
+        ("mfa", "0007_auto_20181230_1549"),
     ]
 
     operations = [
         migrations.AddField(
-            model_name='user_keys',
-            name='last_used',
+            model_name="user_keys",
+            name="last_used",
             field=models.DateTimeField(default=None, null=True, blank=True),
         ),
     ]
diff --git a/mfa/migrations/0009_user_keys_owned_by_enterprise.py b/mfa/migrations/0009_user_keys_owned_by_enterprise.py
index 9185fcc..adf2bd0 100644
--- a/mfa/migrations/0009_user_keys_owned_by_enterprise.py
+++ b/mfa/migrations/0009_user_keys_owned_by_enterprise.py
@@ -6,21 +6,23 @@ from django.conf import settings
 
 
 def update_owned_by_enterprise(apps, schema_editor):
-    user_keys = apps.get_model('mfa', 'user_keys')
-    user_keys.objects.filter(key_type='FIDO2').update(owned_by_enterprise=getattr(settings,"MFA_OWNED_BY_ENTERPRISE",False))
+    user_keys = apps.get_model("mfa", "user_keys")
+    user_keys.objects.filter(key_type="FIDO2").update(
+        owned_by_enterprise=getattr(settings, "MFA_OWNED_BY_ENTERPRISE", False)
+    )
 
 
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('mfa', '0008_user_keys_last_used'),
+        ("mfa", "0008_user_keys_last_used"),
     ]
 
     operations = [
         migrations.AddField(
-            model_name='user_keys',
-            name='owned_by_enterprise',
+            model_name="user_keys",
+            name="owned_by_enterprise",
             field=models.NullBooleanField(default=None),
         ),
-        migrations.RunPython(update_owned_by_enterprise)
+        migrations.RunPython(update_owned_by_enterprise),
     ]
diff --git a/mfa/migrations/0010_auto_20201110_0557.py b/mfa/migrations/0010_auto_20201110_0557.py
index 48190b6..de6913c 100644
--- a/mfa/migrations/0010_auto_20201110_0557.py
+++ b/mfa/migrations/0010_auto_20201110_0557.py
@@ -6,13 +6,13 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('mfa', '0009_user_keys_owned_by_enterprise'),
+        ("mfa", "0009_user_keys_owned_by_enterprise"),
     ]
 
     operations = [
         migrations.AlterField(
-            model_name='user_keys',
-            name='key_type',
-            field=models.CharField(default='TOTP', max_length=25),
+            model_name="user_keys",
+            name="key_type",
+            field=models.CharField(default="TOTP", max_length=25),
         ),
     ]
diff --git a/mfa/migrations/0011_auto_20210530_0622.py b/mfa/migrations/0011_auto_20210530_0622.py
index 3d215c2..a270d66 100644
--- a/mfa/migrations/0011_auto_20210530_0622.py
+++ b/mfa/migrations/0011_auto_20210530_0622.py
@@ -6,13 +6,13 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('mfa', '0010_auto_20201110_0557'),
+        ("mfa", "0010_auto_20201110_0557"),
     ]
 
     operations = [
         migrations.AlterField(
-            model_name='user_keys',
-            name='owned_by_enterprise',
+            model_name="user_keys",
+            name="owned_by_enterprise",
             field=models.BooleanField(blank=True, default=None, null=True),
         ),
     ]
diff --git a/mfa/models.py b/mfa/models.py
index d4eff59..b9dd673 100644
--- a/mfa/models.py
+++ b/mfa/models.py
@@ -2,31 +2,45 @@ from django.db import models
 from jsonfield import JSONField
 from jose import jwt
 from django.conf import settings
-#from jsonLookup import shasLookup, hasLookup
+
+# from jsonLookup import shasLookup, hasLookup
 # JSONField.register_lookup(shasLookup)
 # JSONField.register_lookup(hasLookup)
 
 
 class User_Keys(models.Model):
-    username=models.CharField(max_length = 50)
-    properties=JSONField(null = True)
-    added_on=models.DateTimeField(auto_now_add = True)
-    key_type=models.CharField(max_length = 25,default = "TOTP")
-    enabled=models.BooleanField(default=True)
-    expires=models.DateTimeField(null=True,default=None,blank=True)
-    last_used=models.DateTimeField(null=True,default=None,blank=True)
-    owned_by_enterprise=models.BooleanField(default=None,null=True,blank=True)
+    username = models.CharField(max_length=50)
+    properties = JSONField(null=True)
+    added_on = models.DateTimeField(auto_now_add=True)
+    key_type = models.CharField(max_length=25, default="TOTP")
+    enabled = models.BooleanField(default=True)
+    expires = models.DateTimeField(null=True, default=None, blank=True)
+    last_used = models.DateTimeField(null=True, default=None, blank=True)
+    owned_by_enterprise = models.BooleanField(default=None, null=True, blank=True)
 
-    def save(self, force_insert=False, force_update=False, using=None, update_fields=None):
-        if self.key_type == "Trusted Device" and self.properties.get("signature","") == "":
-            self.properties["signature"]= jwt.encode({"username": self.username, "key": self.properties["key"]}, settings.SECRET_KEY)
-        super(User_Keys, self).save(force_insert=force_insert, force_update=force_update, using=using, update_fields=update_fields)
+    def save(
+        self, force_insert=False, force_update=False, using=None, update_fields=None
+    ):
+        if (
+            self.key_type == "Trusted Device"
+            and self.properties.get("signature", "") == ""
+        ):
+            self.properties["signature"] = jwt.encode(
+                {"username": self.username, "key": self.properties["key"]},
+                settings.SECRET_KEY,
+            )
+        super(User_Keys, self).save(
+            force_insert=force_insert,
+            force_update=force_update,
+            using=using,
+            update_fields=update_fields,
+        )
 
     def __unicode__(self):
-        return "%s -- %s"%(self.username,self.key_type)
+        return "%s -- %s" % (self.username, self.key_type)
 
     def __str__(self):
         return self.__unicode__()
 
     class Meta:
-        app_label='mfa'
+        app_label = "mfa"
diff --git a/mfa/totp.py b/mfa/totp.py
index 96617c7..2284ab1 100644
--- a/mfa/totp.py
+++ b/mfa/totp.py
@@ -11,66 +11,95 @@ from .views import login
 import datetime
 from django.utils import timezone
 import random
-def verify_login(request,username,token):
-    for key in User_Keys.objects.filter(username=username,key_type = "TOTP"):
+
+
+def verify_login(request, username, token):
+    for key in User_Keys.objects.filter(username=username, key_type="TOTP"):
         totp = pyotp.TOTP(key.properties["secret_key"])
-        if  totp.verify(token,valid_window = 30):
-            key.last_used=timezone.now()
+        if totp.verify(token, valid_window=30):
+            key.last_used = timezone.now()
             key.save()
-            return [True,key.id]
+            return [True, key.id]
     return [False]
 
+
 def recheck(request):
     context = csrf(request)
-    context["mode"]="recheck"
+    context["mode"] = "recheck"
     if request.method == "POST":
-        if verify_login(request,request.user.username, token=request.POST["otp"]):
+        if verify_login(request, request.user.username, token=request.POST["otp"]):
             import time
+
             request.session["mfa"]["rechecked_at"] = time.time()
-            return HttpResponse(simplejson.dumps({"recheck": True}), content_type="application/json")
+            return HttpResponse(
+                simplejson.dumps({"recheck": True}), content_type="application/json"
+            )
         else:
-            return HttpResponse(simplejson.dumps({"recheck": False}), content_type="application/json")
-    return render(request,"TOTP/recheck.html", context)
+            return HttpResponse(
+                simplejson.dumps({"recheck": False}), content_type="application/json"
+            )
+    return render(request, "TOTP/recheck.html", context)
+
 
 @never_cache
 def auth(request):
-    context=csrf(request)
-    if request.method=="POST":
-        res=verify_login(request,request.session["base_username"],token = request.POST["otp"])
+    context = csrf(request)
+    if request.method == "POST":
+        res = verify_login(
+            request, request.session["base_username"], token=request.POST["otp"]
+        )
         if res[0]:
-            mfa = {"verified": True, "method": "TOTP","id":res[1]}
+            mfa = {"verified": True, "method": "TOTP", "id": res[1]}
             if getattr(settings, "MFA_RECHECK", False):
-                mfa["next_check"] = datetime.datetime.timestamp((datetime.datetime.now()
-                                         + datetime.timedelta(
-                            seconds=random.randint(settings.MFA_RECHECK_MIN, settings.MFA_RECHECK_MAX))))
+                mfa["next_check"] = datetime.datetime.timestamp(
+                    (
+                        datetime.datetime.now()
+                        + datetime.timedelta(
+                            seconds=random.randint(
+                                settings.MFA_RECHECK_MIN, settings.MFA_RECHECK_MAX
+                            )
+                        )
+                    )
+                )
             request.session["mfa"] = mfa
             return login(request)
-        context["invalid"]=True
-    return render(request,"TOTP/Auth.html", context)
-
+        context["invalid"] = True
+    return render(request, "TOTP/Auth.html", context)
 
 
 def getToken(request):
-    secret_key=pyotp.random_base32()
+    secret_key = pyotp.random_base32()
     totp = pyotp.TOTP(secret_key)
-    request.session["new_mfa_answer"]=totp.now()
-    return HttpResponse(simplejson.dumps({"qr":pyotp.totp.TOTP(secret_key).provisioning_uri(str(request.user.username), issuer_name = settings.TOKEN_ISSUER_NAME),
-                         "secret_key": secret_key}))
+    request.session["new_mfa_answer"] = totp.now()
+    return HttpResponse(
+        simplejson.dumps(
+            {
+                "qr": pyotp.totp.TOTP(secret_key).provisioning_uri(
+                    str(request.user.username), issuer_name=settings.TOKEN_ISSUER_NAME
+                ),
+                "secret_key": secret_key,
+            }
+        )
+    )
+
+
 def verify(request):
-    answer=request.GET["answer"]
-    secret_key=request.GET["key"]
+    answer = request.GET["answer"]
+    secret_key = request.GET["key"]
     totp = pyotp.TOTP(secret_key)
-    if totp.verify(answer,valid_window = 60):
-        uk=User_Keys()
-        uk.username=request.user.username
-        uk.properties={"secret_key":secret_key}
-        #uk.name="Authenticatior #%s"%User_Keys.objects.filter(username=user.username,type="TOTP")
-        uk.key_type="TOTP"
+    if totp.verify(answer, valid_window=60):
+        uk = User_Keys()
+        uk.username = request.user.username
+        uk.properties = {"secret_key": secret_key}
+        # uk.name="Authenticatior #%s"%User_Keys.objects.filter(username=user.username,type="TOTP")
+        uk.key_type = "TOTP"
         uk.save()
         return HttpResponse("Success")
-    else: return HttpResponse("Error")
+    else:
+        return HttpResponse("Error")
+
 
 @never_cache
 def start(request):
     """Start Adding Time One Time Password (TOTP)"""
-    return render(request,"TOTP/Add.html",get_redirect_url())
+    return render(request, "TOTP/Add.html", get_redirect_url())
diff --git a/mfa/urls.py b/mfa/urls.py
index 90e9432..48513c2 100644
--- a/mfa/urls.py
+++ b/mfa/urls.py
@@ -1,50 +1,46 @@
-from . import views,totp,U2F,TrustedDevice,helpers,FIDO2,Email
-#app_name='mfa'
+from . import views, totp, U2F, TrustedDevice, helpers, FIDO2, Email
+
+# app_name='mfa'
 
 try:
-    from django.urls import  re_path as url
+    from django.urls import re_path as url
 except:
-     from django.conf.urls import  url
+    from django.conf.urls import url
 urlpatterns = [
-    url(r'totp/start/', totp.start , name="start_new_otop"),
-    url(r'totp/getToken', totp.getToken , name="get_new_otop"),
-    url(r'totp/verify', totp.verify, name="verify_otop"),
-    url(r'totp/auth', totp.auth, name="totp_auth"),
-    url(r'totp/recheck', totp.recheck, name="totp_recheck"),
-
-    url(r'email/start/', Email.start , name="start_email"),
-    url(r'email/auth/', Email.auth , name="email_auth"),
-
-    url(r'u2f/$', U2F.start, name="start_u2f"),
-    url(r'u2f/bind', U2F.bind, name="bind_u2f"),
-    url(r'u2f/auth', U2F.auth, name="u2f_auth"),
-    url(r'u2f/process_recheck', U2F.process_recheck, name="u2f_recheck"),
-    url(r'u2f/verify', U2F.verify, name="u2f_verify"),
-
-    url(r'fido2/$', FIDO2.start, name="start_fido2"),
-    url(r'fido2/auth', FIDO2.auth, name="fido2_auth"),
-    url(r'fido2/begin_auth', FIDO2.authenticate_begin, name="fido2_begin_auth"),
-    url(r'fido2/complete_auth', FIDO2.authenticate_complete, name="fido2_complete_auth"),
-    url(r'fido2/begin_reg', FIDO2.begin_registeration, name="fido2_begin_reg"),
-    url(r'fido2/complete_reg', FIDO2.complete_reg, name="fido2_complete_reg"),
-    url(r'fido2/recheck', FIDO2.recheck, name="fido2_recheck"),
-
-
-    url(r'td/$', TrustedDevice.start, name="start_td"),
-    url(r'td/add', TrustedDevice.add, name="add_td"),
-    url(r'td/send_link', TrustedDevice.send_email, name="td_sendemail"),
-    url(r'td/get-ua', TrustedDevice.getUserAgent, name="td_get_useragent"),
-    url(r'td/trust', TrustedDevice.trust_device, name="td_trust_device"),
-    url(r'u2f/checkTrusted', TrustedDevice.checkTrusted, name="td_checkTrusted"),
-    url(r'u2f/secure_device', TrustedDevice.getCookie, name="td_securedevice"),
-
-    url(r'^$', views.index, name="mfa_home"),
-    url(r'goto/(.*)', views.goto, name="mfa_goto"),
-    url(r'selct_method', views.show_methods, name="mfa_methods_list"),
-    url(r'recheck', helpers.recheck, name="mfa_recheck"),
-    url(r'toggleKey', views.toggleKey, name="toggle_key"),
-    url(r'delete', views.delKey, name="mfa_delKey"),
-    url(r'reset', views.reset_cookie, name="mfa_reset_cookie"),
-
-            ]
-# print(urlpatterns)
\ No newline at end of file
+    url(r"totp/start/", totp.start, name="start_new_otop"),
+    url(r"totp/getToken", totp.getToken, name="get_new_otop"),
+    url(r"totp/verify", totp.verify, name="verify_otop"),
+    url(r"totp/auth", totp.auth, name="totp_auth"),
+    url(r"totp/recheck", totp.recheck, name="totp_recheck"),
+    url(r"email/start/", Email.start, name="start_email"),
+    url(r"email/auth/", Email.auth, name="email_auth"),
+    url(r"u2f/$", U2F.start, name="start_u2f"),
+    url(r"u2f/bind", U2F.bind, name="bind_u2f"),
+    url(r"u2f/auth", U2F.auth, name="u2f_auth"),
+    url(r"u2f/process_recheck", U2F.process_recheck, name="u2f_recheck"),
+    url(r"u2f/verify", U2F.verify, name="u2f_verify"),
+    url(r"fido2/$", FIDO2.start, name="start_fido2"),
+    url(r"fido2/auth", FIDO2.auth, name="fido2_auth"),
+    url(r"fido2/begin_auth", FIDO2.authenticate_begin, name="fido2_begin_auth"),
+    url(
+        r"fido2/complete_auth", FIDO2.authenticate_complete, name="fido2_complete_auth"
+    ),
+    url(r"fido2/begin_reg", FIDO2.begin_registeration, name="fido2_begin_reg"),
+    url(r"fido2/complete_reg", FIDO2.complete_reg, name="fido2_complete_reg"),
+    url(r"fido2/recheck", FIDO2.recheck, name="fido2_recheck"),
+    url(r"td/$", TrustedDevice.start, name="start_td"),
+    url(r"td/add", TrustedDevice.add, name="add_td"),
+    url(r"td/send_link", TrustedDevice.send_email, name="td_sendemail"),
+    url(r"td/get-ua", TrustedDevice.getUserAgent, name="td_get_useragent"),
+    url(r"td/trust", TrustedDevice.trust_device, name="td_trust_device"),
+    url(r"u2f/checkTrusted", TrustedDevice.checkTrusted, name="td_checkTrusted"),
+    url(r"u2f/secure_device", TrustedDevice.getCookie, name="td_securedevice"),
+    url(r"^$", views.index, name="mfa_home"),
+    url(r"goto/(.*)", views.goto, name="mfa_goto"),
+    url(r"selct_method", views.show_methods, name="mfa_methods_list"),
+    url(r"recheck", helpers.recheck, name="mfa_recheck"),
+    url(r"toggleKey", views.toggleKey, name="toggle_key"),
+    url(r"delete", views.delKey, name="mfa_delKey"),
+    url(r"reset", views.reset_cookie, name="mfa_reset_cookie"),
+]
+# print(urlpatterns)
diff --git a/mfa/views.py b/mfa/views.py
index 9039363..3d3251e 100644
--- a/mfa/views.py
+++ b/mfa/views.py
@@ -1,6 +1,7 @@
 from django.shortcuts import render
-from django.http import HttpResponse,HttpResponseRedirect
+from django.http import HttpResponse, HttpResponseRedirect
 from .models import *
+
 try:
     from django.urls import reverse
 except:
@@ -12,79 +13,94 @@ from . import TrustedDevice
 from django.contrib.auth.decorators import login_required
 from user_agents import parse
 
+
 @login_required
 def index(request):
-    keys=[]
-    context={"keys":User_Keys.objects.filter(username=request.user.username),"UNALLOWED_AUTHEN_METHODS":settings.MFA_UNALLOWED_METHODS
-             ,"HIDE_DISABLE":getattr(settings,"MFA_HIDE_DISABLE",[])}
+    keys = []
+    context = {
+        "keys": User_Keys.objects.filter(username=request.user.username),
+        "UNALLOWED_AUTHEN_METHODS": settings.MFA_UNALLOWED_METHODS,
+        "HIDE_DISABLE": getattr(settings, "MFA_HIDE_DISABLE", []),
+    }
     for k in context["keys"]:
-        if k.key_type =="Trusted Device" :
-            setattr(k,"device",parse(k.properties.get("user_agent","-----")))
+        if k.key_type == "Trusted Device":
+            setattr(k, "device", parse(k.properties.get("user_agent", "-----")))
         elif k.key_type == "FIDO2":
-            setattr(k,"device",k.properties.get("type","----"))
+            setattr(k, "device", k.properties.get("type", "----"))
         keys.append(k)
-    context["keys"]=keys
-    return render(request,"MFA.html",context)
+    context["keys"] = keys
+    return render(request, "MFA.html", context)
 
-def verify(request,username):
+
+def verify(request, username):
     request.session["base_username"] = username
-    #request.session["base_password"] = password
-    keys=User_Keys.objects.filter(username=username,enabled=1)
-    methods=list(set([k.key_type for k in keys]))
+    # request.session["base_password"] = password
+    keys = User_Keys.objects.filter(username=username, enabled=1)
+    methods = list(set([k.key_type for k in keys]))
 
-    if "Trusted Device" in methods and not request.session.get("checked_trusted_device",False):
+    if "Trusted Device" in methods and not request.session.get(
+        "checked_trusted_device", False
+    ):
         if TrustedDevice.verify(request):
             return login(request)
         methods.remove("Trusted Device")
     request.session["mfa_methods"] = methods
-    if len(methods)==1:
-        return HttpResponseRedirect(reverse(methods[0].lower()+"_auth"))
+    if len(methods) == 1:
+        return HttpResponseRedirect(reverse(methods[0].lower() + "_auth"))
     return show_methods(request)
 
+
 def show_methods(request):
-    return render(request,"select_mfa_method.html", {})
+    return render(request, "select_mfa_method.html", {})
+
 
 def reset_cookie(request):
-    response=HttpResponseRedirect(settings.LOGIN_URL)
+    response = HttpResponseRedirect(settings.LOGIN_URL)
     response.delete_cookie("base_username")
     return response
+
+
 def login(request):
     from django.contrib import auth
     from django.conf import settings
+
     callable_func = __get_callable_function__(settings.MFA_LOGIN_CALLBACK)
-    return callable_func(request,username=request.session["base_username"])
+    return callable_func(request, username=request.session["base_username"])
 
 
 @login_required
 def delKey(request):
-    key=User_Keys.objects.get(id=request.GET["id"])
+    key = User_Keys.objects.get(id=request.GET["id"])
     if key.username == request.user.username:
         key.delete()
         return HttpResponse("Deleted Successfully")
     else:
         return HttpResponse("Error: You own this token so you can't delete it")
 
+
 def __get_callable_function__(func_path):
     import importlib
-    if not '.' in func_path:
+
+    if not "." in func_path:
         raise Exception("class Name should include modulename.classname")
 
     parsed_str = func_path.split(".")
-    module_name , func_name = ".".join(parsed_str[:-1]) , parsed_str[-1]
+    module_name, func_name = ".".join(parsed_str[:-1]), parsed_str[-1]
     imported_module = importlib.import_module(module_name)
-    callable_func = getattr(imported_module,func_name)
+    callable_func = getattr(imported_module, func_name)
     if not callable_func:
         raise Exception("Module does not have requested function")
     return callable_func
 
+
 @login_required
 def toggleKey(request):
-    id=request.GET["id"]
-    q=User_Keys.objects.filter(username=request.user.username, id=id)
-    if q.count()==1:
-        key=q[0]
+    id = request.GET["id"]
+    q = User_Keys.objects.filter(username=request.user.username, id=id)
+    if q.count() == 1:
+        key = q[0]
         if not key.key_type in settings.MFA_HIDE_DISABLE:
-            key.enabled=not key.enabled
+            key.enabled = not key.enabled
             key.save()
             return HttpResponse("OK")
         else:
@@ -92,5 +108,6 @@ def toggleKey(request):
     else:
         return HttpResponse("Error")
 
-def goto(request,method):
-    return HttpResponseRedirect(reverse(method.lower()+"_auth"))
+
+def goto(request, method):
+    return HttpResponseRedirect(reverse(method.lower() + "_auth"))