exam/app/forms.py

from django import forms
from .models import *


class RegistrationForm(forms.ModelForm):
    class Meta:
        model = CustomUser
        fields = ['username', 'first_name', 'last_name', 'email', 'password', 'photo_profile']

    def save(self, commit=True):
        user = super(RegistrationForm, self).save(commit=False)
        user.set_password(self.cleaned_data['password'])
        if commit:
            user.save()
        return user