python version 2.7 required,which was not found in the registry

安装PIL-1.1.7.win32-py2.7的时候，不能再注册表中识别出来python2.7

 方法：新建一个register.py 文件，把一下代码贴进去，保存

## script to register Python 2.0 or later for use with win32all# and other extensions that require Python registry settings## written by Joakim Loew for Secret Labs AB / PythonWare## source:# http://www.pythonware.com/products/works/articles/regpy20.htm## modified by Valentine Gogichashvili as described in http://www.mail-archive.com/distutils-sig@python.org/msg10512.html import sys from _winreg import * # tweak as necessaryversion = sys.version[:3]installpath = sys.prefix regpath = "SOFTWARE\\Python\\Pythoncore\\%s\\" % (version)installkey = "InstallPath"pythonkey = "PythonPath"pythonpath = "%s;%s\\Lib\\;%s\\DLLs\\" % (    installpath, installpath, installpath) def RegisterPy():    try:        reg = OpenKey(HKEY_CURRENT_USER, regpath)    except EnvironmentError as e:        try:            reg = CreateKey(HKEY_CURRENT_USER, regpath)            SetValue(reg, installkey, REG_SZ, installpath)            SetValue(reg, pythonkey, REG_SZ, pythonpath)            CloseKey(reg)        except:            print "*** Unable to register!"            return        print "--- Python", version, "is now registered!"        return    if (QueryValue(reg, installkey) == installpath and        QueryValue(reg, pythonkey) == pythonpath):        CloseKey(reg)        print "=== Python", version, "is already registered!"        return    CloseKey(reg)    print "*** Unable to register!"    print "*** You probably have another Python installation!" if __name__ == "__main__":    RegisterPy()

(代码来自：http://effbot.org/zone/python-register.htm)

按F5执行即显示：

显示“python 2.7 is already registered”

再安装setuptools的时候，就能自动识别出来python2.7了。

win7是 64的原因，在安装python（32位）时，如果选择只为当前用户，以上问题是不会出现的，如果选择所有用户，那就用上面的方法解决吧。

原文转载至：http://www.cnblogs.com/thinksasa/archive/2013/08/26/3283695.html