导入：from django import forms
Create a class
class UserForm(forms.Form):
name=forms.CharField(min_length=4)
email = forms.EmailField()
In view function instantiated
form = UserForm("name"="xhl","email":"111")
Verification method
form.is_valid () # field check whether the information submitted, returns a Boolean value
1. If form.is_valid () is True form.cleaned_data return value is a dictionary, all field-tested successful, and field values,
2. if form.is_valid () returns False form.errors a dictionary for all the field validation fails, and field values, form.cleaned_data return value is the dictionary, all of the field efficacy successful, and field values,