python-Django框架

常用命令

1. 生成应用

python manage.py start app(app_name)

2. 开启服务器

python manage.py runserver 0.0.0.0:8001

3. 声称以及修改数据模型

python manage.py makemigrations app(app_name)

4. 数据库模型移植

python manage.py migrate

5. 使用管理界面之前建立管理员用户（必须在cmd下运行）

python manage.py createsuperuser

ERROR

1. ERROR:在使用python虚环境（安装了django）的情况下运行manage.py出错

   I:\code\python\web\django\django0510>I:\code\python\web\django\djangoenv\Scripts\python manage.py 8001
   Traceback (most recent call last):
     File "manage.py", line 10, in <module>
       execute_from_command_line(sys.argv)
     File "I:\code\python\web\django\djangoenv\lib\site-packages\django\core\management\__init__.py", line 350, in execute_from_command_line
       utility.execute()
     File "I:\code\python\web\django\djangoenv\lib\site-packages\django\core\management\__init__.py", line 324, in execute
       django.setup()
     File "I:\code\python\web\django\djangoenv\lib\site-packages\django\__init__.py", line 18, in setup
       apps.populate(settings.INSTALLED_APPS)
     File "I:\code\python\web\django\djangoenv\lib\site-packages\django\apps\registry.py", line 108, in populate
       app_config.import_models(all_models)
     File "I:\code\python\web\django\djangoenv\lib\site-packages\django\apps\config.py", line 202, in import_models
       self.models_module = import_module(models_module_name)
     File "h:\64soft\python27\Lib\importlib\__init__.py", line 37, in import_module
       __import__(name)
     File "I:\code\python\web\django\djangoenv\lib\site-packages\django\contrib\auth\models.py", line 297, in <module>
       class AbstractUser(AbstractBaseUser, PermissionsMixin):
     File "I:\code\python\web\django\djangoenv\lib\site-packages\django\db\models\base.py", line 251, in __new__
       new_class.add_to_class(field.name, new_field)
     File "I:\code\python\web\django\djangoenv\lib\site-packages\django\db\models\base.py", line 299, in add_to_class
       value.contribute_to_class(cls, name)
     File "I:\code\python\web\django\djangoenv\lib\site-packages\django\db\models\fields\__init__.py", line 672, in contribute_to_class
       cls._meta.add_field(self)
     File "I:\code\python\web\django\djangoenv\lib\site-packages\django\db\models\options.py", line 312, in add_field
       self.local_fields.insert(bisect(self.local_fields, field), field)
     File "h:\64soft\python27\Lib\functools.py", line 56, in <lambda>
       '__lt__': [('__gt__', lambda self, other: other < self),
     ......
     File "h:\64soft\python27\Lib\functools.py", line 56, in <lambda>
       '__lt__': [('__gt__', lambda self, other: other < self),
   RuntimeError: maximum recursion depth exceeded while calling a Python object
   

   SOLUTION: 修改h:\64soft\python27\Lib\functools.py里的convert，如下

   convert = {
           '__lt__': [('__gt__', lambda self, other: not (self < other or self == other)),
                      ('__le__', lambda self, other: self < other or self == other),
                      ('__ge__', lambda self, other: not self < other)],
           '__le__': [('__ge__', lambda self, other: not self <= other or self == other),
                      ('__lt__', lambda self, other: self <= other and not self == other),
                      ('__gt__', lambda self, other: not self <= other)],
           '__gt__': [('__lt__', lambda self, other: not (self > other or self == other)),
                      ('__ge__', lambda self, other: self > other or self == other),
                      ('__le__', lambda self, other: not self > other)],
           '__ge__ ': [('__le__', lambda self, other: (not self >= other) or self == other),
                      ('__gt__', lambda self, other: self >= other and not self == other),
                      ('__lt__', lambda self, other: not self >= other)]
       }
   

2. ERROR: 访问url报错Forbidden (CSRF cookie not set.): xxx
   
   SOLUTION: 注释掉setting.py里的下列语句