運行環境：Windows 8.1
Python：2.7.6

在安裝的時候，我使用的pip來進行安裝,命令如下：
代碼如下:
pip install beautifulsoup4

運行的時候，報錯如下：
代碼如下:
Exception:
Traceback (most recent call last):
  File "J:/Program Files (x86)/Python/Python27/lib/site-packages/pip/basecomm
.py", line 122, in main
    status = self.run(options, args)
  File "J:/Program Files (x86)/Python/Python27/lib/site-packages/pip/commands
stall.py", line 278, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bu
e=self.bundle)
  File "J:/Program Files (x86)/Python/Python27/lib/site-packages/pip/req.py",
ne 1229, in prepare_files
    req_to_install.run_egg_info()
  File "J:/Program Files (x86)/Python/Python27/lib/site-packages/pip/req.py",
ne 292, in run_egg_info
    logger.notify('Running setup.py (path:%s) egg_info for package %s' % (sel
etup_py, self.name))
  File "J:/Program Files (x86)/Python/Python27/lib/site-packages/pip/req.py",
ne 265, in setup_py
    import setuptools
  File "build/bdist.win-amd64/egg/setuptools/__init__.py", line 11, in <modul
    from setuptools.extension import Extension
  File "build/bdist.win-amd64/egg/setuptools/extension.py", line 5, in <modul
  File "build/bdist.win-amd64/egg/setuptools/dist.py", line 15, in <module>
  File "build/bdist.win-amd64/egg/setuptools/compat.py", line 19, in <module>
  File "J:/Program Files (x86)/Python/Python27/lib/SimpleHTTPServer.py", line
, in <module>
    class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
  File "J:/Program Files (x86)/Python/Python27/lib/SimpleHTTPServer.py", line
8, in SimpleHTTPRequestHandler
    mimetypes.init() # try to read system mime.types
  File "J:/Program Files (x86)/Python/Python27/lib/mimetypes.py", line 358, i
nit
    db.read_windows_registry()
  File "J:/Program Files (x86)/Python/Python27/lib/mimetypes.py", line 258, i
ead_windows_registry
    for subkeyname in enum_types(hkcr):
  File "J:/Program Files (x86)/Python/Python27/lib/mimetypes.py", line 249, i
num_types
    ctype = ctype.encode(default_encoding) # omit in 3.x!
UnicodeDecodeError: 'ascii' codec can't decode byte 0xb0 in position 1: ordin
not in range(128)

Storing debug log for failure in C:/Users/Administrator/pip/pip.log

解決方法：打開C:/Python27/Lib下的 mimetypes.py 文件，找到大概256行的
代碼如下:
default_encoding = sys.getdefaultencoding()

改成：
代碼如下:
if sys.getdefaultencoding() != 'gbk':