solution：AttributeError: 'module' object has no attribute 'PY2'

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本文介绍了在安装web.py模块过程中遇到的错误及解决方案。当尝试使用pip安装web.py时出现AttributeError异常，提示'six'模块不存在'PY2'属性。解决办法是升级'six'模块，具体操作为使用sudo pip install --upgrade six命令。

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当我安装web.py模块（pip install web.py/

sudo pip installweb.py）时出现了下面错误：
Exception:
Traceback (most recent call last):
File"/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, inmain
status =self.run(options, args)
File"/usr/lib/python2.7/dist-packages/pip/commands/install.py", line278, in run
requirement_set.prepare_files(finder,force_root_egg_info=self.bundle, bundle=self.bundle)
File"/usr/lib/python2.7/dist-packages/pip/req.py", line 1229, inprepare_files
req_to_install.run_egg_info()
File"/usr/lib/python2.7/dist-packages/pip/req.py", line 292, inrun_egg_info
logger.notify('Running setup.py (path:%s) egg_info for package %s'% (self.setup_py, self.name))
File"/usr/lib/python2.7/dist-packages/pip/req.py", line 284, insetup_py
ifsix.PY2 and isinstance(setup_py, six.text_type):
AttributeError: 'module' object has no attribute 'PY2'

Storing debug log for failure in /home/lzc/.pip/pip.log

解决方法：升级six，即sudo pip install --upgrade six

If you six module has noPY2, the most likely reason is that you have anotherpackage named six somewhere. What does the following show if yourun it in the interpreter: import six; six.__file__Also, six.__version__.

>>>import six >>> six.__file__'/usr/local/lib/python2.7/dist-packages/six.pyc' >>>six.__version__ '1.3.0' – Ok, your `six` is very old. I doubt it's the cause, butyou could try upgrading it: `pip install --upgrade six`.Can't really help you further if that's not it.

quotefrom:http://stackoverflow.com/questions/24081043/module-object-has-no-attribute-py2