python使用pip安装包一直错误

问题描述

问 题

C:\Users\Administrator>pip install beautifulsoup4
Collecting beautifulsoup4
Exception:
Traceback (most recent call last):
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\basecommand.py", line 215, in main
    status = self.run(options, args)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\commands\install.py", line 299, in run
    requirement_set.prepare_files(finder)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\req\req_set.py", line 370, in prepare_files
    ignore_dependencies=self.ignore_dependencies))
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\req\req_set.py", line 522, in _prepare_file
    finder, self.upgrade, require_hashes)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\req\req_install.py", line 268, in populate_link
    self.link = finder.find_requirement(self, upgrade)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\index.py", line 442, in find_requirement
    all_candidates = self.find_all_candidates(req.name)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\index.py", line 400, in find_all_candidates
    for page in self._get_pages(url_locations, project_name):
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\index.py", line 545, in _get_pages
    page = self._get_page(location)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\index.py", line 648, in _get_page
    return HTMLPage.get_page(link, session=self.session)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\index.py", line 757, in get_page
    "Cache-Control": "max-age=600",
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\requests\sessions.py", line 487, in get
    return self.request('GET', url, **kwargs)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\download.py", line 378, in request
    return super(PipSession, self).request(method, url, *args, **kwargs)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\requests\sessions.py", line 475, in request
    resp = self.send(prep, **send_kwargs)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\requests\sessions.py", line 617, in send
    r.content
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\requests\models.py", line 741, in content
    self._content = bytes().join(self.iter_content(CONTENT_CHUNK_SIZE)) or bytes()
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\requests\models.py", line 664, in generate
    for chunk in self.raw.stream(chunk_size, decode_content=True):
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\requests\packages\urllib3\response.py", line 353, in stream
    data = self.read(amt=amt, decode_content=decode_content)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\requests\packages\urllib3\response.py", line 310, in read
    data = self._fp.read(amt)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\cachecontrol\filewrapper.py", line 54, in read
    self.__callback(self.__buf.getvalue())
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\cachecontrol\controller.py", line 297, in cache_response
    self.serializer.dumps(request, response, body=body),
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\download.py", line 281, in set
    return super(SafeFileCache, self).set(*args, **kwargs)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\cachecontrol\caches\file_cache.py", line 99, in set
    with self.lock_class(name) as lock:
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\lockfile\mkdirlockfile.py", line 19, in __init__
    LockBase.__init__(self, path, threaded, timeout)
  File "C:\Python27\lib\site-packages\pip-8.1.2-py2.7.egg\pip\_vendor\lockfile\__init__.py", line 242, in __init__
    hash(self.path)))
  File "C:\Python27\lib\ntpath.py", line 85, in join
    result_path = result_path + p_path
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc0 in position 0: ordinal not in range(128)

pip list这些语句能用，就是在安装包的时候一直报错，网上没有相关的信息。

麻烦大家看一下，谢谢。

解决方案

1、在Python的安装目录C:/Python27/Lib/里找到mimetypes.py文件；
2、打开mimetypes.py文件，在import结束后添加以下代码：

import sys
reload(sys)
sys.setdefaultencoding('utf-8')

保存文件 重新执行pip
即可

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