我一直试图在python 3.4下运行nltk但没有成功。使用http://www.nltk.org/install.html上的说明：
sudo pip install -U nltk
这适用于Mac上预装的2.7，但使用
时sudo pip3 install -U nltk
尝试在3.4下安装我收到以下错误：
/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.
使用brew安装Python 3.4，并且正确安装了bumpy和setuptools。我通过一些令人难以置信的但没有明确的答案看到了这个问题的暗示。