解决Win7(x64)Anaconda3报错：AttributeError: '_NamespacePath' object has no attribute 'sort'

最近论文需要用到python做数据分析，python语法简单，但是Windows下安装第三方包恶心的要命，statsmodels用pip死活安装不上，网上查了说包相互依赖windows下的pip不能下载全，还有好几个其他的统计包也是如此，整晕了算。

看网上有些python大牛推荐Anaconda，可以解决包的问题，于是卸载本地的python，从官网上下了个Anconda玩玩，结果遇到新问题。

问题如下：

An unexpected error has occurred.
Please consider posting the following information to the
conda GitHub issue tracker at:

    https://github.com/conda/conda/issues



Current conda install:

               platform : win-64
          conda version : 4.3.21
       conda is private : False
      conda-env version : 4.3.21
    conda-build version : not installed
         python version : 3.6.1.final.0
       requests version : 2.14.2
       root environment : d:\ProgramData\Anaconda3  (writable)
    default environment : d:\ProgramData\Anaconda3
       envs directories : d:\ProgramData\Anaconda3\envs
                          C:\Users\user\AppData\Local\conda\conda\envs
                          C:\Users\user\.conda\envs
          package cache : d:\ProgramData\Anaconda3\pkgs
                          C:\Users\user\AppData\Local\conda\conda\pkgs
           channel URLs : https://repo.continuum.io/pkgs/free/win-64
                          https://repo.continuum.io/pkgs/free/noarch
                          https://repo.continuum.io/pkgs/r/win-64
                          https://repo.continuum.io/pkgs/r/noarch
                          https://repo.continuum.io/pkgs/pro/win-64
                          https://repo.continuum.io/pkgs/pro/noarch
                          https://repo.continuum.io/pkgs/msys2/win-64
                          https://repo.continuum.io/pkgs/msys2/noarch
            config file : None
             netrc file : None
           offline mode : False
             user-agent : conda/4.3.21 requests/2.14.2 CPython/3.6.1 Windows/7 Windows/6.1.7601
          administrator : True

`$ d:\ProgramData\Anaconda3\Scripts\conda-script.py ..checkenv cmd.exe d:\ProgramData\Anaconda3`




    Traceback (most recent call last):
      File "d:\ProgramData\Anaconda3\lib\site-packages\conda\cli\main.py", line 167, in main
        import conda.cli.activate as activate
      File "d:\ProgramData\Anaconda3\lib\site-packages\conda\cli\activate.py", line 12, in <module>
        from ..utils import shells
      File "d:\ProgramData\Anaconda3\lib\site-packages\conda\utils.py", line 13, in <module>
        from .gateways.disk.read import compute_md5sum
      File "d:\ProgramData\Anaconda3\lib\site-packages\conda\gateways\disk\read.py", line 22, in <module>
        from ...models.channel import Channel
      File "d:\ProgramData\Anaconda3\lib\site-packages\conda\models\channel.py", line 9, in <module>
        from ..base.context import context
      File "d:\ProgramData\Anaconda3\lib\site-packages\conda\base\context.py", line 18, in <module>
        from .._vendor.auxlib.path import expand
      File "d:\ProgramData\Anaconda3\lib\site-packages\conda\_vendor\auxlib\path.py", line 8, in <module>
        import pkg_resources
      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 646, in _load_unlocked
      File "<frozen importlib._bootstrap>", line 616, in _load_backward_compatible
      File "d:\ProgramData\Anaconda3\lib\site-packages\setuptools-27.2.0-py3.6.egg\pkg_resources\__init__.py", line 2985, in <module>
        @_call_aside
      File "d:\ProgramData\Anaconda3\lib\site-packages\setuptools-27.2.0-py3.6.egg\pkg_resources\__init__.py", line 2971, in _call_aside
        f(*args, **kwargs)
      File "d:\ProgramData\Anaconda3\lib\site-packages\setuptools-27.2.0-py3.6.egg\pkg_resources\__init__.py", line 3013, in _initialize_master_working_set
        dist.activate(replace=False)
      File "d:\ProgramData\Anaconda3\lib\site-packages\setuptools-27.2.0-py3.6.egg\pkg_resources\__init__.py", line 2544, in activate
        declare_namespace(pkg)
      File "d:\ProgramData\Anaconda3\lib\site-packages\setuptools-27.2.0-py3.6.egg\pkg_resources\__init__.py", line 2118, in declare_namespace
        _handle_ns(packageName, path_item)
      File "d:\ProgramData\Anaconda3\lib\site-packages\setuptools-27.2.0-py3.6.egg\pkg_resources\__init__.py", line 2058, in _handle_ns
        _rebuild_mod_path(path, packageName, module)
      File "d:\ProgramData\Anaconda3\lib\site-packages\setuptools-27.2.0-py3.6.egg\pkg_resources\__init__.py", line 2087, in _rebuild_mod_path
        orig_path.sort(key=position_in_sys_path)
    AttributeError: '_NamespacePath' object has no attribute 'sort'