在Mac OS 10.9上为Python 3.4安装nltk
我一直在尝试在 Python 3.4 上运行 nltk，但一直没有成功。我按照这个网站的说明：http://www.nltk.org/install.html，用以下命令：
sudo pip install -U nltk
这个命令在 Mac 上预装的 2.7 版本上可以正常工作，但当我用
sudo pip3 install -U nltk
来尝试在 3.4 上安装时，却出现了以下错误：
/usr/local/Cellar/python3/3.4.1_1/Frameworks/Python.framework/Versions/3.4/lib/python3.4/distutils/dist.py:260: UserWarning: Unknown distribution option: 'zip_safe'
warnings.warn(msg)
/usr/local/Cellar/python3/3.4.1_1/Frameworks/Python.framework/Versions/3.4/lib/python3.4/distutils/dist.py:260: UserWarning: Unknown distribution option: 'test_suite'
warnings.warn(msg)
/usr/local/Cellar/python3/3.4.1_1/Frameworks/Python.framework/Versions/3.4/lib/python3.4/distutils/dist.py:260: UserWarning: Unknown distribution option: 'entry_points'
warnings.warn(msg)
usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
or: setup.py --help [cmd1 cmd2 ...]
or: setup.py --help-commands
or: setup.py cmd --help
error: invalid command 'bdist_egg'
/private/tmp/pip_build_root/nltk/distribute-0.6.21-py3.4.egg
Traceback (most recent call last):
File "/private/tmp/pip_build_root/nltk/distribute_setup.py", line 143, in use_setuptools
raise ImportError
ImportError
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<string>", line 17, in <module>
File "/private/tmp/pip_build_root/nltk/setup.py", line 23, in <module>
distribute_setup.use_setuptools()
File "/private/tmp/pip_build_root/nltk/distribute_setup.py", line 145, in use_setuptools
return _do_download(version, download_base, to_dir, download_delay)
File "/private/tmp/pip_build_root/nltk/distribute_setup.py", line 125, in _do_download
_build_egg(egg, tarball, to_dir)
File "/private/tmp/pip_build_root/nltk/distribute_setup.py", line 116, in _build_egg
raise IOError('Could not build the egg.')
OSError: Could not build the egg.
Python 3.4 是通过 brew 安装的，并且 bumpy 和 setuptools 也都正确安装了。我在网上查了一些资料，发现有类似的问题，但没有找到明确的解决办法。