Win7安装Web.py，UnicodeDecodeError: 'ascii' codec can't decode byte 0xb0 in position 1: ordinal not in

突然想看看Webpy, 在网上看到一个篇：在windows下如何快速搭建web.py开发框架

http://www.cnblogs.com/dolphin0520/archive/2013/10/15/3343617.html

但是从github上下载下来后，安装出错：

$ python setup.py install
Traceback (most recent call last):
  File "setup.py", line 6, in <module>
    from web import __version__
  File "c:\Python27\webpy-webpy-0.37\web\__init__.py", line 14, in <module>
    import utils, db, net, wsgi, http, webapi, httpserver, debugerror
  File "c:\Python27\webpy-webpy-0.37\web\wsgi.py", line 12, in <module>
    import httpserver
  File "c:\Python27\webpy-webpy-0.37\web\httpserver.py", line 4, in <module>
    from SimpleHTTPServer import SimpleHTTPRequestHandler
  File "c:\Python27\lib\SimpleHTTPServer.py", line 27, in <module>
    class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
  File "c:\Python27\lib\SimpleHTTPServer.py", line 208, in SimpleHTTPRequestHan
ler
    mimetypes.init() # try to read system mime.types
  File "c:\Python27\lib\mimetypes.py", line 358, in init
    db.read_windows_registry()
  File "c:\Python27\lib\mimetypes.py", line 258, in read_windows_registry
    for subkeyname in enum_types(hkcr):
  File "c:\Python27\lib\mimetypes.py", line 249, in enum_types
    ctype = ctype.encode(default_encoding) # omit in 3.x!
UnicodeDecodeError: 'ascii' codec can't decode byte 0xb0 in position 1: ordinal
not in range(128)

各种搜索找不到解决方案，没办法，自己打开Webpy的setup.py文件一看，原来就一个version的问题

setup.py

#!/usr/bin/env python# ...from distutils.core import setupfrom web import __version__setup(name='web.py',      version=__version__,      description='web.py: makes web apps',      author='Aaron Swartz',      author_email='[e-mail]',      maintainer='Anand Chitipothu',      maintainer_email='[e-mail]',      url=' http://webpy.org/',      packages=['web', 'web.wsgiserver', 'web.contrib'],      long_description="Think about the ideal way to write a web app. Write the code to make it happen.",      license="Public domain",      platforms=["any"],     )

明显from web import __version__ 找不到吗，手动给他设置一下，之后安装成功，下面是我手动该的：

#!/usr/bin/env python# ...from distutils.core import setupsetup(name='web.py',      version='0.37',      description='web.py: makes web apps',      author='Aaron Swartz',      author_email='[e-mail]',      maintainer='Anand Chitipothu',      maintainer_email='[e-mail]',      url=' http://webpy.org/',      packages=['web', 'web.wsgiserver', 'web.contrib'],      long_description="Think about the ideal way to write a web app. Write the code to make it happen.",      license="Public domain",      platforms=["any"],     )

好啦，安装成功，我是在Git Bash下装的，cmd没试，因为看到很多人说要用Cygwin

如果上面的看完你安装成功了，说名你是个新手，我也是个新手，那么我们该写hello world啦。代码满天飞，就不写啦，但是你运行又出错啦：

$ python hello.py
Traceback (most recent call last):
  File "hello.py", line 1, in <module>
    import web
  File "c:\Python27\lib\site-packages\web\__init__.py", line 14, in <module>
    import utils, db, net, wsgi, http, webapi, httpserver, debugerror
  File "c:\Python27\lib\site-packages\web\wsgi.py", line 12, in <module>
    import httpserver
  File "c:\Python27\lib\site-packages\web\httpserver.py", line 4, in <module>
    from SimpleHTTPServer import SimpleHTTPRequestHandler
  File "c:\Python27\lib\SimpleHTTPServer.py", line 27, in <module>
    class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
  File "c:\Python27\lib\SimpleHTTPServer.py", line 208, in SimpleHTTPRequestHand
ler
    mimetypes.init() # try to read system mime.types
  File "c:\Python27\lib\mimetypes.py", line 362, in init
    db.read_windows_registry()
  File "c:\Python27\lib\mimetypes.py", line 262, in read_windows_registry
    for subkeyname in enum_types(hkcr):
  File "c:\Python27\lib\mimetypes.py", line 249, in enum_types
    ctype = ctype.encode(default_encoding) # omit in 3.x!
UnicodeDecodeError: 'ascii' codec can't decode byte 0xb0 in position 1: ordinal
not in range(128)

如果你像我一样马虎，只能说我们都找错了地方，其实web.py的setup.py没有问题，你应该仔细看到最下面的error

  File "c:\Python27\lib\mimetypes.py", line 262, in read_windows_registry
    for subkeyname in enum_types(hkcr):
  File "c:\Python27\lib\mimetypes.py", line 249, in enum_types
    ctype = ctype.encode(default_encoding) # omit in 3.x!
UnicodeDecodeError: 'ascii' codec can't decode byte 0xb0 in position 1: ordinal
not in range(128)

是的，是编码问题，于是我们又搜索到了另一个人的解决方案

解决UnicodeDecodeError: ‘ascii’ codec can’t decode byte 0xe5 in position 108: ordinal not in range(128

http://blog.csdn.net/mindmb/article/details/7898528

非常好，我们好像找到原因啦，但是他没有写的那么清楚，实际上你应该看下一个搜索结果：

setuptools,pip,install,UnicodeDecodeError: 'ascii' codec can't decode byte.原因和解决方案

http://blog.csdn.net/hugleecool/article/details/17996993

解决方法：打开C:\Python27\Lib下的 mimetypes.py 文件，找到大概256行（你可以用Notepad++的搜索功能）的

‘default_encoding = sys.getdefaultencoding()’。

在这行前面添加三行：

if sys.getdefaultencoding() != 'gbk':reload(sys)sys.setdefaultencoding('gbk')default_encoding = sys.getdefaultencoding()

现在你可以python hello.py啦，经过不懈的努力的搜索，我们终于找到原因啦，看到下面的截图，恭喜你啦。(不想让你见笑，这是我的一次写python)

瞬间感慨网上贡献的重要！