如下：
Portable Python是可移植的Python开发环境，它允许同一个系统环境下并存多个版本且相互独立的Python开发环境，也适合放在移动存储设备中作为一个完备的的、便携的开发环境，这两个特点对开发人员非常有用。Portable Python集成了wxPython、django、PyGame等一批常用的Python框架和模块，甚至内含了PyScripter、SPE这两个Python的IDE，这使得Portable Python自解压到硬盘上开始就是一个完备的Python开发环境！
但是由于是可移植的，Portable Python并不会像Python官方的Windows平台安装程序一样在安装时往注册表中写入相关信息。同时，一些工具的安装或运行需要读取注册表中的Python信息，比如win32all安装程序和使用distutils包制作的安装程序。SQLite的Python移植版PySQLite的Windows平台安装程序就是使用distutils制作的，我在安装适用于Python 2.6的PySQLite到Portable Python时就因收到"Python version 2.6 required, which was not found in the registry."的错误而失败。
这里提供了解决办法，首先，将下面的代码复制并保存为一个Python文件(比如registerpython.py)：
#!/usr/bin/python
# -*- encoding: utf-8 -*-
#
# script to register Python 2.0 or later for use with win32all
# and other extensions that require Python registry settings
#
# written by Joakim Löw for Secret Labs AB / PythonWare
#
# source:
# http://www.pythonware.com/products/works/articles/regpy20.htm
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_LOCAL_MACHINE, regpath)
except EnvironmentError:
try:
reg = CreateKey(HKEY_LOCAL_MACHINE, 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!"
def UnRegisterPy():
try:
reg = OpenKey(HKEY_LOCAL_MACHINE, regpath)
except EnvironmentError:
print "*** Python not registered?!"
return
try:
DeleteKey(reg, installkey)
DeleteKey(reg, pythonkey)
DeleteKey(HKEY_LOCAL_MACHINE, regpath)
except:
print "*** Unable to un-register!"
else:
print "--- Python", version, "is no longer registered!"
if __name__ == "__main__":
# Register python's distribution
RegisterPy()
# If you want to unregister python's distribution, just comment the upper line and uncomment the following line
#UnRegisterPy()
然后在Windows的cmd.exe中使用Portable Python的python.exe执行此脚本，例如我这里是：
D:\PortablePython1.1py2.6.1\App\python.exe D:\registerpython.py
执行后，正常情况下应该可以成功向注册表中写入相关信息，此时再安装PySQLite或其它依赖注册表中Python安装信息的程序就正常了。安装后的PySQLite已经不需要注册表，如果希望删除注册表中的信息，可以根据上面代码中的注释的说明，将"RegisterPy()"这一行注释掉，而去掉"UnRegisterPy()"前面的注释符号，然后再执行即可。
他是这么说的：
I realize this question is a year old - but I thought I would contribute one additional bit of info in case anyone else is Googling for this answer.
The issue only crops up on Win7 64-bit when you install Python "for all users". If you install it "for just me", you should not receive these errors. It seems that a lot of installers only look under HKEY_CURRENT_USER for the required registry settings, and not under HKEY_LOCAL_MACHINE. The page linked by APC gives details on how to manually copy the settings to HKEY_CURRENT_USER.
原来是win7 64位的电脑，在安装python时，如果选择只为当前用户，是没问题的，如果选择所有用户，那问题就是我所遇到的，ok，既然知道了这个问题，那么就好办了，我改了一下上面的python代码，大家可以参考附件