pip install beautifulsoup4.失敗

在學習python爬蟲時，用到bs4解析網頁，開始遇到安裝bs出錯

Collecting beautifulsoup4
Exception:
Traceback (most recent call last):
  File "g:\python27\lib\site-packages\pip\basecommand.py", line 215, in main
    status = self.run(options, args)
  File "g:\python27\lib\site-packages\pip\commands\install.py", line 324, in ru

    requirement_set.prepare_files(finder)
  File "g:\python27\lib\site-packages\pip\req\req_set.py", line 380, in prepare
files
    ignore_dependencies=self.ignore_dependencies))
  File "g:\python27\lib\site-packages\pip\req\req_set.py", line 620, in _prepar
_file
    session=self.session, hashes=hashes)
  File "g:\python27\lib\site-packages\pip\download.py", line 821, in unpack_url
    hashes=hashes
  File "g:\python27\lib\site-packages\pip\download.py", line 659, in unpack_htt
_url
    hashes)
  File "g:\python27\lib\site-packages\pip\download.py", line 880, in _download_
ttp_url
    file_path = os.path.join(temp_dir, filename)
  File "g:\python27\lib\ntpath.py", line 85, in join
    result_path = result_path + p_path
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc1 in position 7: ordinal
not in range(128)

 

解決方法：

   原因：pip安裝python包會加載用戶目錄，用戶目錄恰好是中文的，ascii不能編碼。解決辦法是： 
   python目錄 Python27\Lib\site-packages 建一個文件sitecustomize.py 
   內容寫： 
    import sys 
    sys.setdefaultencoding('gb2312')