pip installs packages successfully but executables not found from command line

Question

I am working on mac OS X Yosemite  version 10 10 3   I installed python2 7 and pip using macport as done in  http   johnlaudun org 20150512-installing-and-setting-pip-with-macports   I can successfully install packages and import them inside my python environment and python scripts  However any executable associated with a package that can be called from the command line in the terminal are not found   Does anyone know what might be wrong   More details below   For example while installing a package called  rosdep  as instructed in http   wiki ros org jade Installation Source  I can run  sudo pip install -U rosdep which installs without errors and corresponding files are located in  opt local Library Frameworks Python framework Versions 2 7 lib python2 7 site-packages  However if I try to run   sudo rosdep init  it gives an error    sudo  rosdep  command not found   This is not a package specific error  I get this for any package installed using pip on my computer  I even tried adding    opt local Library Frameworks Python framework Versions 2 7 lib python2 7 site-packages   to my  PATH  But the executables are not found on the command line  even though the packages work perfectly from within python

User · Answer

If you re installing using --user  e g  pip3 6 install --user tmuxp   it is possible to get the platform-specific user install directory from Python itself using the site module   For example  on macOS       python2 7 -m site --user-base  Users alexp Library Python 2 7   By appending  bin to this  we now have the path where package executables will be installed   We can dynamically populate the PATH in your shell s rc file based on the output  I m using bash  but with any luck this is portable     Add Python bin directories to path python3 6 -m site  amp  gt   dev null  amp  amp  PATH   PATH  python3 6 -m site --user-base  bin  python2 7 -m site  amp  gt   dev null  amp  amp  PATH   PATH  python2 7 -m site --user-base  bin    I use the precise Python versions to reduce the chance of the executables just  disappearing  when Python upgrades a minor version  e g  from 3 5 to 3 6   They ll disappear because  as can be seen above  the user installation path may include the Python version   So while python3 could point to 3 5 or 3 6  python3 6 will always point to 3 6   This needs to be kept in mind when installing further packages  e g  use pip3 6 over pip3   If you don t mind the idea of packages disappearing  you can use python2 and python3 instead     Add Python bin directories to path   Note  When Python is upgraded  packages may need to be re-installed         or Python versions managed  python3 -m site  amp  gt   dev null  amp  amp  PATH   PATH  python3 -m site --user-base  bin  python2 -m site  amp  gt   dev null  amp  amp  PATH   PATH  python2 -m site --user-base  bin

User · Answer

I stumbled upon this question because I created  successfully built and published a PyPI Package  but couldn t execute it after installation  The  PATHvariable was correctly set   In my case the problem was that I hadn t set the entry pointin the setup py file   entry points     console scripts      YOUR CONSOLE COMMAND MODULE NAME FILE NAME FUNCTION NAME

User · Answer

Solution Based on other answers  for linux and mac you can run the following  echo  quot export PATH   quot  python3 -m site --user-base  bin  PATH  quot  quot   gt  gt     bashrc source    bashrc  instead of python3 you can use any other link to python version  python  python2 7  python3 6  python3 9  etc  Explanation In order to know where the user packages are installed in the current OS  win  mac  linux   we run  python3 -m site --user-base  We know that the scripts go to the bin  folder where the packages are installed  So we concatenate the paths  echo  python3 -m site --user-base  bin  Then we export that to an environment variable  export PATH   quot  python3 -m site --user-base  bin  PATH  quot   Finally  in order to avoid repeating the export command we add it to our  bashrc file and we run source to run the new changes  giving us the suggested solution mentioned at the beginning

User · Answer

On macOS with the default python installation you need to add  Users  lt you gt  Library Python 2 7 bin  to your  PATH   Add this to your  bash profile   export PATH   Users  lt you gt  Library Python 2 7 bin  PATH    That s where pip installs the executables   Tip  For non-default python version which python to find the location of your python installation and replace that portion in the path above   Thanks for the hint Sanket Diwale

User · Answer

check your  PATH  tox has a command line mode     audrey tests jluc  pip list   grep tox tox  2 3 1    where is it    edit   the 2 7 stuff doesn t matter much here  sub in any 3 x and pip s behaving pretty much the same way   audrey tests jluc  which tox  opt local Library Frameworks Python framework Versions 2 7 bin tox   and what s in my  PATH     audrey tests jluc  echo  PATH  opt chefdk bin  opt chefdk embedded bin  opt local bin      opt local Library Frameworks Python framework Versions 2 7 bin      Notice the  opt local Library Frameworks Python framework Versions 2 7 bin   That s what allows finding my pip-installed stuff  Now  to see where things are from Python  try doing this  substitute rosdep for tox     python  gt  gt  gt  import tox  gt  gt  gt  tox   file     that prints out     opt local Library Frameworks Python framework Versions 2 7 lib python2 7 site-packages tox   init   pyc    Now  cd to the directory right above lib in the above   Do you see a bin directory   Do you see rosdep in that bin   If so try adding the bin to your  PATH   audrey 2 7 jluc  cd  opt local Library Frameworks Python framework Versions 2 7 audrey 2 7 jluc  ls -1   output   Headers Python Resources bin include lib man share

User · Answer

On Windows   this helped me https   packaging python org tutorials installing-packages On Windows you can find the user base binary directory by running python -m site --user-site and replacing site-packages with Scripts  For example  this could return C  Users Username AppData Roaming Python36 site-packages so you would need to set your PATH to include C  Users Username AppData Roaming Python36 Scripts  You can set your user PATH permanently in the Control Panel  You may need to log out for the PATH changes to take effect

User · Answer

In addition to adding python s bin directory to  PATH variable  I also had to change the owner of that directory  to make it work  No idea why I wasn t the owner already   chown -R   Library Python

User · Answer

I know the question asks about macOS  but here is a solution for Linux users who arrive here via Google  I was having the issue described in this question  having installed the pdfx package via pip  When I ran it however  nothing    pip list   grep pdfx pdfx  1 3 0   Yet  which pdfx pdfx not found  The problem on Linux is that pip install     drops scripts into    local bin and this is not on the default Debian Ubuntu  PATH  Here s a GitHub issue going into more detail  https   github com pypa pip issues 3813 To fix  just add    local bin to your  PATH  for example by adding the following line to your  bashrc file  export PATH  quot  HOME  local bin  PATH quot   After that  restart your shell and things should work as expected

User · Answer

When you install Python or Python3 using MacOS installer  downloaded from Python website  - it adds an exporter to your    profile script  All you need to do is just source it  Restarting all the terminals should also do the trick  WARNING - I believe it s better to just use pip3 with Python3 - for future benefits  If you already have Python3 installed  the following steps work for me on macOS Mojave   Install ansible first using sudo - sudo -H pip3 install ansible  you create a symlink to the Python s bin path   sudo ln -s  Library Frameworks Python framework Versions Current bin  Library Frameworks Python framework current python bin and staple it to  profile export PATH  PATH  Library Frameworks Python framework current python bin  run source    profile and restart all terminal shells   Type ansible --version

User · Answer

On Windows  you need to add the path  USERPROFILE  AppData Roaming Python Scripts to your path

[python] pip installs packages successfully, but executables not found from command line

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