运行环境：Windows 8.1
Python：2.7.6

在安装的时候，我使用的pip来进行安装,命令如下：

复制代码 代码如下:
pip install beautifulsoup4

运行的时候，报错如下：
复制代码 代码如下:
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     from setuptools.extension import Extension
  File \”build\\bdist.win-amd64\\egg\\setuptools\\extension.py\”, line 5, in   File \”build\\bdist.win-amd64\\egg\\setuptools\\dist.py\”, line 15, in
  File \”build\\bdist.win-amd64\\egg\\setuptools\\compat.py\”, line 19, in
  File \”J:\\Program Files (x86)\\Python\\Python27\\lib\\SimpleHTTPServer.py\”, line
, in
    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

解决方法：打开C:\\Python27\\Lib下的 mimetypes.py 文件，找到大概256行的

复制代码 代码如下:
default_encoding = sys.getdefaultencoding()

改成：
复制代码 代码如下:
if sys.getdefaultencoding() != \’gbk\’:
    reload(sys)
    sys.setdefaultencoding(\’gbk\’)
default_encoding = sys.getdefaultencoding()

安装成功后，验证是否安装成功：

复制代码 代码如下:
C:\\Users\\Administrator>python
Python 2.7.6 (default, Nov 10 2013, 19:24:24) [MSC v.1500 64 bit (AMD64)] on 32
Type \”help\”, \”copyright\”, \”credits\” or \”license\” for more information.
>>> from bs4 import BeautifulSoup
>>> exit()

如果“from bs4 import BeautifulSoup”没有报错的话，则说明安装成功，否则，将报类似错误如下：
复制代码 代码如下:
Traceback (most recent call last):
  File \”\”, line 1, in
ImportError: No module named bs4