使用 OAuth 身份验证方法时，我无法从 url 检索身份验证代码。谷歌将我重定向到一个附有代码的网址
..我认为我在正则表达式中犯了一个错误，因为在验证自己并授予应用程序管理我的日历的权限后，我被重定向到 http://127.0.0.1/Main/addloanpremium/?code=4/2wi1hu0Gv8YZuKo79kc-kjCmw7qj0W2EyLYa3qzIe7w # ..如何从 url 中提取代码..上面的 url 在新选项卡上打开，由于我的 urls.py 显示相同的表单页面，但是当我尝试使用 request.GET 访问“代码”值时。 get('code') 它没有给出任何值..
异常值：无法将“NoneType”对象隐式转换为 str
我的views.py 看起来像：
def addloanpremium(request):
if request.method == 'GET':
loan=Loan()
premium=Premium()
user=request.user
#form=loan_pre_form(request.POST)
if(request.GET.get('typelp')=='loan'):
loan.user=user
#premium.user=user
#lots of code here..all values from fields are stored into the db
if(request.GET.get("iscalendar")=="True"):
print(" \n \n entered iscalendar =true \n")
print(" \n \n entered calendar now trying to add event \n \n")
SCOPES = 'https://www.googleapis.com/auth/calendar'
flow=auth2client.client.flow_from_clientsecrets('C:/Users/ghw/Desktop/Expenze/Main/client_secrets.json',SCOPES,redirect_uri='http://127.0.0.1:8000/Main/addloanpremium/')
storage = oauth2client.file.Storage('credentials.dat')
credentials = storage.get()
if not credentials or credentials.invalid:
auth_uri = flow.step1_get_authorize_url()
print("\n value of auth uri is "+auth_uri+"\n")
webbrowser.open(auth_uri)
auth_code = request.GET.get('code')
print("\n value of auth code is "+auth_code+"\n")
### I am getting the auth code wrong
credentials = flow.step2_exchange(auth_code)
storage.put(credentials)
http = httplib2.Http()
http = credentials.authorize(http)
CAL = build('calendar', 'v3', http=http)
.
.#lots of code here
.
return render(request,'Main/loan_pre_form.html',{})
我的主要：urls.py：
url(r'^addloanpremium/$',views.addloanpremium,name='addloanpremium'),
我的 loan_pre_form.html 包含
<form action=" {% url 'Main:addloanpremium' %}" method="GET">
任何帮助将不胜感激。