In forms.py line-no.15, there is .clean() and the method name is also clean(). So whats the difference between those 2 clean met

Question

forms.py
from django import forms
from django.core import validators

class StudentRegister(forms.Form):
name=forms.CharField()
rollno=forms.IntegerField()
email=forms.EmailField()
password=forms.CharField(widget=forms.PasswordInput)
rpassword=forms.CharField(widget=forms.PasswordInput)
feedback=forms.CharField(widget=forms.Textarea, validators=[validators.MaxLengthValidator(40), validators.MinLengthValidator(10)])

def clean(self):
print('after user has submitted the form!')
print('total form validation!! Im in StudentRegister class')
d = super().clean()
print(d)
inputpwd = d['password']
inputrpwd = d['rpassword']
if inputpwd != inputrpwd:
raise forms.ValidationError('Password does not match')
inputname = d['name']
if len(inputname)>10:
raise forms.ValidationError('Please enter a shorter name')
inputemail = d['email']
if not inputemail.endswith('@gmail.com'):
raise forms.ValidationError("Please enter a valid email")

views.py
from django.shortcuts import render
from formapp import forms

def register(request):
if request.method=='GET':
form = forms.StudentRegister() # form object has html code.
if request.method=='POST':
form=forms.StudentRegister(request.POST)
if form.is_valid():
print('form validation success!!')
print(form.cleaned_data['name'])
print(form.cleaned_data['rollno'])
print(form.cleaned_data['email'])
print(form.cleaned_data['password'])
print(form.cleaned_data['rpassword'])
return render(request, 'formapp/register.html', {'form':form})

And one more query,
after I give the submit button in the form, all the data entered in the form stays but the password field goes off. Why is that ?

Answer 1

it takes the method from the super class. You have to find out what form.Forms.clean() does