class SignupForm(Form):
    name = StringField("Ваше имя", [validators.DataRequired("Необходимо ввести имя")])
    email = StringField("Ваш E-mail", [validators.DataRequired("Необходимо ввести  E-mail"),
                                       validators.Email("Необходимо ввести корректный E-mail")])
    password = PasswordField('Создайте пароль', [validators.DataRequired("Необходимо ввести пароль")])
    submit = SubmitField("Создать аккаунт")
    def __init__(self, *args, **kwargs):
        Form.__init__(self, *args, **kwargs)
    def validate(self):
        if not Form.validate(self):
            return False
        user = User.query.filter_by(email=self.email.data.lower()).first()
        if user:
            self.email.errors.append("Этот E-mail уже зарегистрирован в системе")
            return False
        else:
            return True

 @app.route('/signup', methods=['GET', 'POST'])
def signup():
    form = SignupForm()
    name = form.name.data
    email = form.email.data
    password = form.password.data
    if request.method == 'GET':
        return render_template('signup.html', form=form)
    elif request.method == 'POST' and form.validate():
        return "[1] Create a new user [2] sign in the user [3] redirect to the user's profile"
    else:
        return render_template('error.html', password=password)  #Здесь я проверял что параметры приходят верно

 def signup():
    form = SignupForm()
    name = form.name.data
    email = form.email.data
    password = form.password.data

 def edit_profile(request):
    user = User.objects.get(pk=request.session['userid'])
    form = EditProfileForm(request.POST, obj=user)
    if request.POST and form.validate():
        form.populate_obj(user)
        user.save()
        return redirect('/home')
    return render_to_response('edit_profile.html', form=form)

  @app.route('/signup', methods=['GET', 'POST'])
def signup():
    form = SignupForm()
    name = form.name.data
    email = form.email.data
    password = form.password.data
    if request.method == 'GET':     # ЧТО ЗА МАГИЯ?????