Python 2.7和NLTK安装教程

系统：Windows 7 Ultimate 64-bits

Python 2.7安装

1. 下载Python 2.7：http://www.python.org/ftp/python/2.7.6/python-2.7.6.amd64.msi
2. 安装

NLTK安装

1. 下载NLTK： http://pypi.python.org/packages/2.7/s/setuptools/setuptools-0.6c11.win32-py2.7.exe
2. 安装。安装时会出现以下错误：Python version 2.7 required, which was not found in the registry。解决办法：(1)新建一个register.py文件，把以下代码粘贴进去，保存到D盘。

   ## 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 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()

   (2)开始-运行-cmd，把D:\register.py复制进去按回车，出现Python 2.7 is already registered！则表示配置成功。
3. 继续安装setuptools
4. 安装Pip：开始-运行-D:\Program Files\Python\Scripts\easy_install pip
5. 安装PyYAML和NLTK：开始-运行-D:\Program Files\Python\Scripts\pip install pyyaml nltk
6. 测试安装：开始-所有程序-Python 2.7-IDLE(Python GUI)，输入import nltk，无错误表示成功。
   
   
   
   原文链接：http://blog.csdn.net/joey_su/article/details/17287559

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