环境：Win10 64 + python 2.7 32 bit
Source installation (for 32-bit or 64-bit Windows)
1.Install Python: http://www.python.org/download/releases/2.7.3/
简单
2.Install Numpy (optional): http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy
3.Install Setuptools: http://pypi.python.org/packages/2.7/s/setuptools/setuptools-0.6c11.win32-py2.7.exe
简单
4.Install Pip: Start>Run... c:\Python27\Scripts\easy_install pip
5.Install PyYAML and NLTK: Start>Run... c:\Python27\Scripts\pip install pyyaml nltk
6.Test installation: Start>All Programs>Python27>IDLE, then type import nltk