使用 uWSGI 时，Django 中的内置 Python 函数出现 NameError

Question

我正在 Ubuntu 10.10（64 位）上使用 uWSGI（0.9.8）运行 Django 1.3 + Python 2.6。 但是，有时我会在 uwsgi.log 中发现一些奇怪的日志，报告“getattr”、“isinstance”未定义。但它们不是Python的内置函数吗？为什么 Django 找不到它们？当 uwsgi 服务器重新启动时流量较低时，这种情况不会经常发生，而当流量较大且服务器运行很短一段时间时，这种情况会经常出现。

我确信我的 django 应用程序没有任何问题，但我不确定这是否是 Django、uWSGI 甚至 Python 2.6 中的错误。

更新：最新版本的uWSGI似乎不再有这个。

详细日志：

Error in sys.excepthook:
 Traceback (most recent call last):
   File "/usr/lib/python2.6/dist-packages/apport_python_hook.py", line 48,  in apport_excepthook
     if not enabled():
   File "/usr/lib/python2.6/dist-packages/apport_python_hook.py", line 24,  in enabled
     return re.search('^\s*enabled\s*=\s*0\s*$', conf, re.M) is None
   File "/usr/lib/python2.6/re.py", line 142, in search
     return _compile(pattern, flags).search(string)
   File "/usr/lib/python2.6/re.py", line 236, in _compile
     if isinstance(pattern, _pattern_type):
 NameError: global name 'isinstance' is not defined

 Original exception was:
 Traceback (most recent call last):
   File "/usr/local/lib/python2.6/dist-
 packages/django/core/handlers/wsgi.py", line 258, in __call__
     set_script_prefix(base.get_script_name(environ))
   File "/usr/local/lib/python2.6/dist-
 packages/django/core/handlers/base.py", line 239, in get_script_name
     if settings.FORCE_SCRIPT_NAME is not None:
   File "/usr/local/lib/python2.6/dist-
 packages/django/utils/functional.py", line 277, in __getattr__
     return getattr(self._wrapped, name)
 NameError: global name 'getattr' is not defined  Traceback (most recent call last):
   File "/usr/local/lib/python2.6/dist-
 packages/django/core/handlers/wsgi.py", line 258, in __call__
     set_script_prefix(base.get_script_name(environ))
   File "/usr/local/lib/python2.6/dist-
 packages/django/core/handlers/base.py", line 252, in get_script_name
     return force_unicode(environ.get('SCRIPT_NAME', u''))
   File "/usr/local/lib/python2.6/dist-packages/django/utils/encoding.py",
 line 64, in force_unicode
     if isinstance(s, unicode):
 NameError: global name 'isinstance' is not defined  Error in sys.excepthook:
 Traceback (most recent call last):
   File "/usr/lib/python2.6/dist-packages/apport_python_hook.py", line 48,  in apport_excepthook
     if not enabled():
   File "/usr/lib/python2.6/dist-packages/apport_python_hook.py", line 24,  in enabled
     return re.search('^\s*enabled\s*=\s*0\s*$', conf, re.M) is None
   File "/usr/lib/python2.6/re.py", line 142, in search
     return _compile(pattern, flags).search(string)
   File "/usr/lib/python2.6/re.py", line 236, in _compile
     if isinstance(pattern, _pattern_type):
 NameError: global name 'isinstance' is not defined

Answer 1

您可以尝试一下最新的提示吗？它看起来像一个引用计数错误，应该在 0.9.9-dev 中修复

如果您可以确认它解决了您的问题，我将发布一个仅应用此修复的更新版本。

非常感谢您的报告