Python 使用PyCharm时出现Django错误："'；功能'；对象没有属性'；使用'&引用；

在使用Django和Django REST框架编写REST API时，我突然出现以下错误：

Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x1032bc1e0>
Traceback (most recent call last):
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 226, in wrapper
    fn(*args, **kwargs)
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 113, in inner_run
    autoreload.raise_last_exception()
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 249, in raise_last_exception
    six.reraise(*_exception)
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/utils/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 226, in wrapper
    fn(*args, **kwargs)
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/__init__.py", line 27, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/apps/registry.py", line 108, in populate
    app_config.import_models(all_models)
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/apps/config.py", line 199, in import_models
    self.models_module = import_module(models_module_name)
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 978, in _gcd_import
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/employees/models.py", line 1, in <module>
    from django.contrib.auth.admin import User
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/contrib/auth/admin.py", line 7, in <module>
    from django.contrib.auth.forms import (
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/contrib/auth/forms.py", line 120, in <module>
    class UserChangeForm(forms.ModelForm):
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/forms/models.py", line 247, in __new__
    opts.field_classes)
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/forms/models.py", line 166, in fields_for_model
    formfield = f.formfield(**kwargs)
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/db/models/fields/related.py", line 1579, in formfield
    'queryset': self.remote_field.model._default_manager.using(db),
  File "/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site-packages/django/db/models/manager.py", line 85, in manager_method
    return getattr(self.get_queryset, name)(*args, **kwargs)
AttributeError: 'function' object has no attribute 'using'

由启动的线程中未处理的异常 回溯（最近一次呼叫最后一次）： 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/utils/autoreload.py”，第226行，在包装器中 fn（*args，**kwargs） 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/core/management/commands/runserver.py”，第113行，内部运行 autoreload.raise\u last\u异常（） 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/utils/autoreload.py”，第249行，在raise\u last\u异常中 六、重放（*_例外） 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/utils/six.py”，第685行，以reraise显示 通过_回溯（tb）提升值 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/utils/autoreload.py”，第226行，在包装器中 fn（*args，**kwargs） 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/_init_uuuuuuuu.py”，第27行，在设置中 应用程序。填充（设置。已安装的应用程序） 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/apps/registry.py”，第108行，填充 app_config.import_models（所有_models） 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/apps/config.py”，第199行，在导入模型中 self.models\u module=导入模块（models\u module\u name） 文件“/usr/local/ceral/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/importlib/________.py”，第126行，在导入模块中 return _bootstrap._gcd_import（名称[级别：]，包，级别） 文件“”，第978行，在_gcd_import中 文件“”，第961行，在“查找”和“加载”中 文件“”，第950行，在“查找”和“加载”中解锁 文件“”，第655行，已加载 exec_模块中第678行的文件“” 文件“”，第205行，在调用中删除了帧 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/employees/models.py”，第1行，在 从django.contrib.auth.admin导入用户 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/contrib/auth/admin.py”，第7行，在 从django.contrib.auth.forms导入( 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/contrib/auth/forms.py”，第120行，在 类UserChangeForm（forms.ModelForm）： 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/forms/models.py”，第247行，新__ 选项字段（U类） 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/forms/models.py”，第166行，在模型的字段中 formfield=f.formfield（**kwargs） 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/db/models/fields/related.py”，第1579行，格式字段 'queryset'：self.remote\u field.model.\u default\u manager.using（db）， 文件“/Users/alexarias/PycharmProjects/ContratRestAPI/venv/lib/python3.6/site packages/django/db/models/manager.py”，第85行，在manager_方法中 返回getattr（self.get_queryset，name）（*args，**kwargs） AttributeError:“函数”对象没有“正在使用”属性 我尝试取消注释我刚写完但没有解析的所有代码。已检查奇数格式字符和无。。。错误几乎是自发出现的。以前运行的代码现在不运行。

在以下情况下会发生这种情况：

您错误地为GenericAPIView类定义了方法重写

PyCharm然后建议将方法转换为属性

您批准并将方法转换为属性

不确定会发生什么，但PyCharm会修改Django包文件。即使删除@property decorator，问题仍然存在。 如果您在关闭IDE之前立即捕捉到了这一点，那么您可以按住ctrl+z键撤消更改，这将解决问题

如果您已经关闭了IDE，或者无法通过ctrl+z撤消更改，那么解决方案是卸载并重新安装Django

希望这有帮助！包装器问题有时很难调试