安装第三方库时python version 2.7 required,which was not found in the registry

安装numpy-1.6.2.win-amd64-py2.7的时候，不能再注册表中识别出来python2.7

解决方法：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/[e-mail]/msg10512.html

import sys

from _winreg import *

# tweak as necessary
version = 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()

代码来源http://effbot.org/zone/python-register.htm

利用idle打开上述文件F5执行后，
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。