瞭解django表單的問題

Question

class UserField(forms.EmailField): 
def clean(self, value): 
    super(UserField, self).clean(value) 
    try: 
     User.objects.get(username=value) 
     raise forms.ValidationError("There is an existing account associated with this email.") 
    except User.DoesNotExist: 
     return value 

try除了方法很簡單。但是，我有一個很難搞清楚的

super(UserField, self).clean(value) 

Answer 1

super(UserField, self).clean(value)是調用父類的方法：forms.EmailField.clean(value)檢查電子郵件很好地形成。