Python 2.7和NLTK安装教程

系统：Windows 7 Ultimate 64-bits
Python 2.7安装

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

下载NLTK： http://pypi.python.org/packages/2.7/s/setuptools/setuptools-0.6c11.win32-py2.7.exe
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。

[python]
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#  
# 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()  

#
# 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()

(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。

继续安装setuptools
安装Pip：开始-运行-D:\Program Files\Python\Scripts\easy_install pip
安装PyYAML和NLTK：开始-运行-D:\Program Files\Python\Scripts\pip install pyyaml nltk
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。