如下：

Portable Python是可移植的Python開發環境，它允許同一個系統環境下并存多個版本且相互獨立的Python開發環境，也適合放在移動存儲設備中作為一個完備的的、便攜的開發環境，這兩個特點對開發人員非常有用。Portable Python集成了wxPython、django、PyGame等一批常用的Python框架和模塊，甚至內含了PyScripter、SPE這兩個Python的IDE，這使得Portable Python自解壓到硬盤上開始就是一個完備的Python開發環境！

但是由于是可移植的，Portable Python并不會像Python官方的Windows平臺安裝程序一樣在安裝時往注冊表中寫入相關信息。同時，一些工具的安裝或運行需要讀取注冊表中的Python信息，比如win32all安裝程序和使用distutils包制作的安裝程序。SQLite的Python移植版PySQLite的Windows平臺安裝程序就是使用distutils制作的，我在安裝適用于Python 2.6的PySQLite到Portable Python時就因收到"Python version 2.6 required, which was not found in the registry."的錯誤而失敗。

這里提供了解決辦法，首先，將下面的代碼復制并保存為一個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 L?w 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執行此腳本，例如我這里是：

D:\PortablePython1.1py2.6.1\App\python.exe D:\registerpython.py

執行后，正常情況下應該可以成功向注冊表中寫入相關信息，此時再安裝PySQLite或其它依賴注冊表中Python安裝信息的程序就正常了。安裝后的PySQLite已經不需要注冊表，如果希望刪除注冊表中的信息，可以根據上面代碼中的注釋的說明，將"RegisterPy()"這一行注釋掉，而去掉"UnRegisterPy()"前面的注釋符號，然后再執行即可。

他是這么說的：

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.

原來是win7 64位的電腦，在安裝python時，如果選擇只為當前用戶，是沒問題的，如果選擇所有用戶，那問題就是我所遇到的，ok，既然知道了這個問題，那么就好辦了，我改了一下上面的python代碼，大家可以參考附件

與50位技術專家面對面20年技術見證，附贈技術全景圖

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