window7下安装第三方包报错及解决

window7 64位下安装第三方包，,比如安装yaml的exe执行文件，会

报错及解决：python version 2.7(3.4) required,which was not found in the registry

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 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()

用python2.7的idle执行一下即可，会提示“python 2.7 is already registered”

window7 下安装的是python3.4的32位，没有_winreg模块导致无法按脚本，可直接在注册表中直接添加

LOCAL_CURRENT_USER\software\python\PyhtonCore下创建3.4目录，添加InstallPath和PythonPath项，具体如下图：

InstallPath：   D:\python\Python34

PythonPath：  D:\python\Python34;D:\python\Python34\Lib\;D:\python\Python34\DLLs\