python安装zope.interface模块，show:AssertionError:试图在没有开始进度的情况下结束进度

我使用python，并希望在窗口7中安装模块zope.interface，我使用了cmd：

pip install zope.interface

但控制台显示：

Removing temporary dir c:\users\000790\appdata\local\temp\pip_build_000790...
Exception:

Traceback (most recent call last):

  File "C:\Python27\lib\site-packages\pip\basecommand.py", line 134, in main
    status = self.run(options, args)

  File "C:\Python27\lib\site-packages\pip\commands\install.py", line 236, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)

  File "C:\Python27\lib\site-packages\pip\req.py", line 1092, in prepare_files
    self.unpack_url(url, location, self.is_download)

  File "C:\Python27\lib\site-packages\pip\req.py", line 1238, in unpack_url
    retval = unpack_http_url(link, location, self.download_cache, self.download_dir)

  File "C:\Python27\lib\site-packages\pip\download.py", line 622, in unpack_http_url
    download_hash = _download_url(resp, link, temp_location)

  File "C:\Python27\lib\site-packages\pip\download.py", line 510, in _download_url
    logger.end_progress('%s downloaded' % format_size(downloaded))

  File "C:\Python27\lib\site-packages\pip\log.py", line 98, in end_progress
    "Tried to end_progress without start_progress")

AssertionError: Tried to end_progress without start_progress

请告诉我您是否有解决上述错误的方法。

从zope.interface的.egg加载，然后在CMD中尝试此操作：

c:\Python27\Scripts\easy\u install.exe c:\zope.interface-3.6.1-py2.6-win32.egg

注意：要安装.egg，我们需要“轻松安装”，这是setuptools的一部分。因此，我们必须首先安装setuptools。从下载它

注2：如果.egg不在C:\path上，则有时无法识别它