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

本文链接：https://blog.youkuaiyun.com/neal85/article/details/38093019

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 setup
from web import __version__

setup(name='web.py',
      version=__version__,
      description='web.py: makes web apps',
      author='Aaron Swartz',
      author_email='me@aaronsw.com',
      maintainer='Anand Chitipothu',
      maintainer_email='anandology@gmail.com',
      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 setup

setup(name='web.py',
      version='0.37',
      description='web.py: makes web apps',
      author='Aaron Swartz',
      author_email='me@aaronsw.com',
      maintainer='Anand Chitipothu',
      maintainer_email='anandology@gmail.com',
      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.youkuaiyun.com/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.youkuaiyun.com/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！