2

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.

usual me
  • 8,338
  • 10
  • 52
  • 95
  • Are you sure that ``pip`` that you call belongs to Homebrew's Python? From your file list it seems that you have installed ``ipython`` in your system Python, so it has put the executable into ``/usr/local/share/python``. – fjarri Aug 16 '13 at 02:59

3 Answers3

5

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

Parag Bafna
  • 22,812
  • 8
  • 71
  • 144
  • 3
    your suggestion lead to `error: can't combine user with prefix, exec_prefix/home, or install_(plat)base`. I was able to correct it using this http://stackoverflow.com/questions/4495120/combine-user-with-prefix-error-with-setup-py-install. Now ipython is working normally. – usual me Aug 16 '13 at 07:15
1

The workaround (at least for ipython) is to add these lines to ~/.pydistutils.cfg: [install] install-data=/usr/local install-scripts=/usr/local/bin

pigletfly
  • 1,051
  • 1
  • 16
  • 32
0

save the code in the executable file python3 under the path /usr/local/Cellar/python@3.10/3.10.4/Frameworks/Python.framework/Versions/3.10/bin (change to our python version)

#!/usr/local/opt/python@3.10/bin/python3.10
# -*- coding: utf-8 -*-
import re
import sys
from IPython import start_ipython
if __name__ == '__main__':
    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
    sys.exit(start_ipython())
William Song
  • 81
  • 1
  • 1
  • 5