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I installed virtualenv using the command sudo pip install virtualenv and the installation is successful. Later, when I type virtualenv, I get the error message as following, -bash: virtualenv: command not found

The virtualenv is installed in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages. I see the similar questions in the forum with no definitive answers.

Python is in the location /usr/local/bin/python and I have version 2.7.9. I get the following using ls -l command,

enter image description here Why do I see the virtualenv is not found and how to solve the issue ?

UPDATE:

I use the command

ln -s /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/virtualenv.py /usr/local/bin/virtualenv.py to put the virtualenv.py

inside the /usr/local/bin folder. Previously, I only did the same for the virtualenv file. Now, when I put the command virtualenv in the terminal, I get

-bash: /usr/local/bin/virtualenv: Permission denied.

I later use

sudo ln -s /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/virtualenv.py /usr/local/bin/virtualenv.py

and the say message keep showing. which virtualenv still returns nothing.

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    What I suspect is happening is that the virtualenv executable isn't being copied or symlinked to your /usr/local/bin folder. If you can locate the executable inside the site-packages, try symlinking it to /usr/local/bin Commented Jun 9, 2016 at 14:13
  • What do you mean ? I just checked inside the /usr/local/bin folder and there is no virtualenv. Should I copy from the site-packages and put inside the 'bin' folder ? Commented Jun 9, 2016 at 14:30

4 Answers 4

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Pursuant to @Jason's suggestion, try making the symbolic link for virtualenv in the /bin directory like so:

ln -s /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/virtualenv /usr/local/bin/virtualenv
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11 Comments

I did that and now I see virtualenv inside the /usr/local/bin folder. However, when I provide the commands virtualenv or which virtualenv, nothing returns in the Mac terminal. I closed the terminal and started again. No help with that as well. Now ?
I can't take this as answer unless it helps to solve the problem.
Check the permissions in the bin folder with ls -l.
that screenshot above is not from /usr/local/bin, but rather from the user home directory. If you're running chmod in the home dir, it will not be able to find the virtualenv execurable.
Can you provide a new screen shot of what the ls -l in usr/local/bin shows?
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Why don't re-install virtualenv? Also try to use the latest version of pip (sudo pip install -U pip).

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Do I need to uninstall pip and then to install again ?
Okay, I follow your instructions, but, no help here. After upgrading the pip, I get the message, Requirement already up-to-date: pip in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-8.1.2-py2.7.egg
But have you re-installed virtulenv after that?
Yes, I also re-installed the virtualenv
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Not sure if the answer will be useful to you, as i see the question is a few month old, but maybe it will be helpful for others.

I encountered the same problem, after installing python3.5 and pyCharm on my Mac. I moved the 3.5 folder from /Library/Frameworks/Python.framework/Versions/3.5 to /System/Library/Frameworks/Python.framework/Versions/3.5, following this guide, after disabling the System Integrity Protection first with reboot into recovery mode (boot with ctrl+R), and executing csrutil disable in the terminal. After reboot it was possible to move the python3.5 folder, and then i followed the guide, and everything worked like charm. In pyCharm i could choose the version 3.5 from /System/... instead of /Library/... (however, i still left a soft link in /Library/... to the /System folder where the python3.5 now was, just in case), and after adding the path to my zsh i could execute pip3 install virtualenv. So far so good.

Next, i tried to create the environment with virtualenv -p python3 env, and here i had the same problem as you. It seemed like the path could not be added somehow. Initially i also tried to look in the /System/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/ and include it in the $PATH, then also create softlinks to virtualenv.py as you tried too, but finally found that although all the files are in the site-packages folder, the actual executable was in /System/Library/Frameworks/Python.framework/Versions/3.5/bin/virtualenv. As the path there was included in my $PATH, i have no idea why it did not execute when typing virtualenv -p python3 env, even with sudo as you tried too, but once i typed the full path /System/Library/Frameworks/Python.framework/Versions/3.5/bin/virtualenv -p python3 env, it worked like charm again.

I still have no idea why, but it worked and now i can move on :)

Hope it helps, and hope someone can explain this better than me.

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You are created the symbolic link to the wrong file. As far as I know virtualenv is installed to /Library/Frameworks/Python.framework/Versions/2.7/bin/virtualenv, (you can change the numbers for your Python version) so the command for creating the symbolic link should be:

ln -s /Library/Frameworks/Python.framework/Versions/2.7/bin/virtualenv /usr/local/bin/virtualenv
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