理解django形式的问题

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 except方法很简单。但是，我很难搞清楚

super(UserField, self).clean(value)

Answer 1

super(UserField, self).clean(value)正在调用祖先方法：forms.EmailField.clean(value)以检查电子邮件是否格式正确。