问题
I installed the python scientific environment (numpy, scipy, matplotlib, pandas, ipython) a while ago on OSX using brew and either pip or easy_install (or the 2 of them, I don't remember). Now if try to run ipython I get:
-> ipython
-bash: ipython: command not found
Then I did:
-> sudo find . -iname "*ipython*"
Password:
find: ./dev/fd/3: Not a directory
find: ./dev/fd/4: Not a directory
./Users/jfk/.ipython
./usr/local/Cellar/matplotlib/1.2.0/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_console_highlighting.py
./usr/local/Cellar/matplotlib/1.2.0/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_console_highlighting.pyc
./usr/local/Cellar/matplotlib/1.2.0/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_directive.py
./usr/local/Cellar/matplotlib/1.2.0/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_directive.pyc
./usr/local/Cellar/matplotlib/1.2.1/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_console_highlighting.py
./usr/local/Cellar/matplotlib/1.2.1/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_console_highlighting.pyc
./usr/local/Cellar/matplotlib/1.2.1/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_directive.py
./usr/local/Cellar/matplotlib/1.2.1/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_directive.pyc
./usr/local/Cellar/python/2.7.4/Frameworks/Python.framework/Versions/2.7/share/doc/ipython
./usr/local/Cellar/python/2.7.4/Frameworks/Python.framework/Versions/2.7/share/doc/ipython/examples/core/ipython-get-history.py
./usr/local/Cellar/python/2.7.4/Frameworks/Python.framework/Versions/2.7/share/doc/ipython/examples/core/ipython-qtconsole.desktop
./usr/local/Cellar/python/2.7.4/Frameworks/Python.framework/Versions/2.7/share/doc/ipython/examples/core/ipython-sh.desktop
./usr/local/Cellar/python/2.7.4/Frameworks/Python.framework/Versions/2.7/share/doc/ipython/examples/core/ipython.desktop
./usr/local/Cellar/python/2.7.4/Frameworks/Python.framework/Versions/2.7/share/doc/ipython/examples/core/ipython_here_shell_extension.reg
./usr/local/Cellar/python/2.7.4/Frameworks/Python.framework/Versions/2.7/share/man/man1/ipython.1
./usr/local/lib/python2.7/site-packages/IPython
./usr/local/lib/python2.7/site-packages/IPython/config/profile/cluster/ipython_config.py
./usr/local/lib/python2.7/site-packages/IPython/config/profile/cluster/ipython_config.pyc
./usr/local/lib/python2.7/site-packages/IPython/config/profile/math/ipython_config.py
./usr/local/lib/python2.7/site-packages/IPython/config/profile/math/ipython_config.pyc
./usr/local/lib/python2.7/site-packages/IPython/config/profile/pysh/ipython_config.py
./usr/local/lib/python2.7/site-packages/IPython/config/profile/pysh/ipython_config.pyc
./usr/local/lib/python2.7/site-packages/IPython/config/profile/sympy/ipython_config.py
./usr/local/lib/python2.7/site-packages/IPython/config/profile/sympy/ipython_config.pyc
./usr/local/lib/python2.7/site-packages/IPython/frontend/html/notebook/static/codemirror/README-IPython.rst
./usr/local/lib/python2.7/site-packages/IPython/frontend/html/notebook/static/codemirror/theme/ipython.css
./usr/local/lib/python2.7/site-packages/IPython/frontend/qt/console/ipython_widget.py
./usr/local/lib/python2.7/site-packages/IPython/frontend/qt/console/ipython_widget.pyc
./usr/local/lib/python2.7/site-packages/IPython/frontend/qt/console/resources/icon/IPythonConsole.svg
./usr/local/lib/python2.7/site-packages/IPython/frontend/qt/console/rich_ipython_widget.py
./usr/local/lib/python2.7/site-packages/IPython/frontend/qt/console/rich_ipython_widget.pyc
./usr/local/lib/python2.7/site-packages/ipython-0.13.2-py2.7.egg-info
./usr/local/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_console_highlighting.py
./usr/local/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_console_highlighting.pyc
./usr/local/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_directive.py
./usr/local/lib/python2.7/site-packages/matplotlib/sphinxext/ipython_directive.pyc
./usr/local/share/python/ipython
I was surprised not to see any /bin directory.
Then I tried to reinstall ipython
-> pip install ipython
Requirement already satisfied (use --upgrade to upgrade): ipython in /usr/local/lib/python2.7/site-packages
Cleaning up...
This is really confusing. Any idea is welcome.
回答1:
Create .pydistutils.cfg in your $HOME following contents
[global]
verbose=1
[install]
install-scripts=$HOME/bin
[easy_install]
install-scripts=$HOME/bin
Run
pip install -U --user --force ipython
Have a look at https://github.com/pypa/pip/issues/426
回答2:
The workaround (at least for ipython) is to add these lines to ~/.pydistutils.cfg:
[install]
install-data=/usr/local
install-scripts=/usr/local/bin
来源：https://stackoverflow.com/questions/18264908/ipython-command-not-found-on-osx