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Introduction

Python Language Rules

Lint Imports Packages Exceptions Global Variables Nested/Local/Inner Classes and Functions List Comprehensions Default Iterators and Operators Generators Lambda Functions Conditional Expressions Default Argument Values Properties True/False Evaluations Deprecated Language Features Lexical Scoping Function and Method Decorators Threading Power Features

Python Style Rules

Semicolons Line Length Parentheses Indentation Blank Lines Whitespace Shebang Line Comments Classes Strings Files and Sockets TODO Comments Imports Formatting Statements Access Control Naming Main

Django Style Rules

Models Views Forms Urls

Forms

  • form名采用大驼峰命名法命名，且必须以Form作为后缀
  • 必须继承django.forms.Form
  • 如果需要预处理单个字段，需要实现clean_[field_name]()函数
  • 如果需要同时预处理多个字段，需要实现clean()函数
  • 值为多选一的字段，必须添加choices参数，且必须使用大写
class PersonCreateForm(forms.Form):
    first_name = forms.CharField(max_length=20)
    last_name = forms.CharField(max_length=40)
    gender = forms.ChoiceField(Person.GENDERS)
    birthday = forms.FloatField(required=False)
    job = forms.CharField(max_length=200)
    description = forms.CharField(required=False)

    def clean_birthday(self):
        field = self.cleaned_data['birthday']
        if field:
            return timestamp_to_datetime(field)
        else:
            return None

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