Python3.6安装NLTK

#Python3.6安装NLTK
####说明：我在安装NLTK的过程中遇到了一些问题，我是按照《Python自然语言处理》中所说的，进入nltk.org中下载nltk-3.2.4.exe直接双击安装，出了一些问题（如下图）
如果你没有遇到此问题，一路绿灯，那就不用往下看了。
##过程：
###1.注册Python
在桌面新建一个registry.py写入如下内容（与python2.x不同)

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()

开始-运行-cmd，把python registry.py复制进去按回车，出现Python 3.6 is already registered！则表示配置成功。

###2.安装PyYAML和NLTK
开始-运行-$Python_Home\Scripts\pip install pyyaml nltk 路径随具体情况而定

###3.验证
打开Python IDLE输入
import nltk
nltk.download（）
出现