I recently wiped my Mac and reinstalled OSX El Capitan public beta 3. I installed pip with `sudo easy_install pip` and installed virtualenv with `sudo pip install virtualenv` and did not have any problems.

Now, when I try to `sudo pip install virtualenvwrapper`, I get the following:

    Users-Air:~ User$ sudo pip install virtualenvwrapper

    The directory &#39;/Users/User/Library/Caches/pip/http&#39; or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo&#39;s -H flag.
    The directory &#39;/Users/User/Library/Caches/pip/http&#39; or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo&#39;s -H flag.
    Collecting virtualenvwrapper
      Downloading virtualenvwrapper-4.6.0-py2.py3-none-any.whl
    Requirement already satisfied (use --upgrade to upgrade): virtualenv in /Library/Python/2.7/site-packages (from virtualenvwrapper)
    Requirement already satisfied (use --upgrade to upgrade): virtualenv-clone in /Library/Python/2.7/site-packages (from virtualenvwrapper)
    Collecting stevedore (from virtualenvwrapper)
      Downloading stevedore-1.7.0-py2.py3-none-any.whl
    Requirement already satisfied (use --upgrade to upgrade): pbr&lt;2.0,&gt;=1.3 in /Library/Python/2.7/site-packages (from stevedore-&gt;virtualenvwrapper)
    Requirement already satisfied (use --upgrade to upgrade): argparse in /Library/Python/2.7/site-packages (from stevedore-&gt;virtualenvwrapper)
    Collecting six&gt;=1.9.0 (from stevedore-&gt;virtualenvwrapper)
      Downloading six-1.9.0-py2.py3-none-any.whl
    Installing collected packages: six, stevedore, virtualenvwrapper
      Found existing installation: six 1.4.1
        DEPRECATION: Uninstalling a distutils installed project (six) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.
        Uninstalling six-1.4.1:
    Exception:
    Traceback (most recent call last):
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/basecommand.py&quot;, line 223, in main
        status = self.run(options, args)
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/commands/install.py&quot;, line 299, in run
        root=options.root_path,
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/req/req_set.py&quot;, line 640, in install
        requirement.uninstall(auto_confirm=True)
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/req/req_install.py&quot;, line 726, in uninstall
        paths_to_remove.remove(auto_confirm)
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/req/req_uninstall.py&quot;, line 125, in remove
        renames(path, new_path)
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/utils/__init__.py&quot;, line 314, in renames
        shutil.move(old, new)
      File &quot;/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py&quot;, line 302, in move
        copy2(src, real_dst)
      File &quot;/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py&quot;, line 131, in copy2
        copystat(src, dst)
      File &quot;/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py&quot;, line 103, in copystat
        os.chflags(dst, st.st_flags)
    OSError: [Errno 1] Operation not permitted: &#39;/tmp/pip-tTNnKQ-uninstall/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/six-1.4.1-py2.7.egg-info&#39;

As the issue seems to be with the `six` package, manually trying to uninstall it with `sudo pip uninstall six` results in the same error. The output suggests using the `-H` flag as well, but I still get pretty much the same error:

    Users-Air:~ User$ sudo -H pip install virtualenvwrapper
    Collecting virtualenvwrapper
      Downloading virtualenvwrapper-4.6.0-py2.py3-none-any.whl
    Requirement already satisfied (use --upgrade to upgrade): virtualenv in /Library/Python/2.7/site-packages (from virtualenvwrapper)
    Requirement already satisfied (use --upgrade to upgrade): virtualenv-clone in /Library/Python/2.7/site-packages (from virtualenvwrapper)
    Collecting stevedore (from virtualenvwrapper)
      Downloading stevedore-1.7.0-py2.py3-none-any.whl
    Requirement already satisfied (use --upgrade to upgrade): pbr&lt;2.0,&gt;=1.3 in /Library/Python/2.7/site-packages (from stevedore-&gt;virtualenvwrapper)
    Requirement already satisfied (use --upgrade to upgrade): argparse in /Library/Python/2.7/site-packages (from stevedore-&gt;virtualenvwrapper)
    Collecting six&gt;=1.9.0 (from stevedore-&gt;virtualenvwrapper)
      Downloading six-1.9.0-py2.py3-none-any.whl
    Installing collected packages: six, stevedore, virtualenvwrapper
      Found existing installation: six 1.4.1
        DEPRECATION: Uninstalling a distutils installed project (six) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.
        Uninstalling six-1.4.1:
    Exception:
    Traceback (most recent call last):
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/basecommand.py&quot;, line 223, in main
        status = self.run(options, args)
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/commands/install.py&quot;, line 299, in run
        root=options.root_path,
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/req/req_set.py&quot;, line 640, in install
        requirement.uninstall(auto_confirm=True)
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/req/req_install.py&quot;, line 726, in uninstall
        paths_to_remove.remove(auto_confirm)
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/req/req_uninstall.py&quot;, line 125, in remove
        renames(path, new_path)
      File &quot;/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg/pip/utils/__init__.py&quot;, line 314, in renames
        shutil.move(old, new)
      File &quot;/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py&quot;, line 302, in move
        copy2(src, real_dst)
      File &quot;/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py&quot;, line 131, in copy2
        copystat(src, dst)
      File &quot;/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py&quot;, line 103, in copystat
        os.chflags(dst, st.st_flags)
    OSError: [Errno 1] Operation not permitted: &#39;/tmp/pip-fwQzor-uninstall/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/six-1.4.1-py2.7.egg-info&#39;

I have disabled rootless with `sudo nvram boot-args=&quot;rootless=0&quot;`, and this has had no effect. Any help would be appreciated!

Can&#39;t install virtualenvwrapper on OSX 10.11 El Capitan

How do you change the default Virtualenvwrapper prompt?  By default, working on a particular virtual environment with a command like `workon &lt;_name_of_env_&gt;` prepends the name of the virtualenv to your prompt. This may work poorly if you&#39;re not using a default command prompt.

How do I change the default virtualenv prompt?

Lots of other threads about similar issues, but none that I could find where quite the same case as mine. So, here goes:

**Things I did:**

 - Ran: `sudo easy_install pip`
 - Ran: `sudo pip install virtualenv`
 - Ran: `sudo pip install virtualenvwrapper`

**Current State:**

 - .bash_profile

        export PATH=/usr/local/bin:$PATH
        export PIP_DOWNLOAD_CACHE=$HOME/.pip/cache
        export WORKON_HOME=$HOME/.virtualenvs
        export PIP_VIRTUALENV_BASE=$WORKON_HOME
        export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python

 - Running `mkvirtualenv test` results in:

        New python executable in trunk/bin/python
        Installing setuptools, pip...done.
        /usr/bin/python: No module named virtualenvwrapper

 - Manually inspecting &#39;/usr/local/bin&#39; shows that virtualenvwrapper.sh exists
 - Unlike some other questions I saw about this, I get no message about virtualenvwrapper when I start a new terminal window
 - Running &#39;which python&#39; results in: `/usr/bin/python`


**What I&#39;ve tried:**

 - Inspecting my path to make sure it looks like it is supposed to
 - Reinstalling pip, then using the reinstalled pip to reinstall virtualenv and virtualenvwrapper



Any help getting this working would be very much appreciated.

Installed virtualenv and virtualenvwrapper: Python says no module named virtualenvwrapper

I&#39;m using virtualenvwrapper with a django project that has a management task that automatically writes some config files, so the user just has to

    ./manage.py generate_configuration &gt; much_nice.conf

And then move the file elsewhere. One of the generated config files is a task for supervisord that launches a celery worker. The problem I&#39;m getting is that I don&#39;t know how to **output the path of the celery executable** that is **within the bin folder** of the virtualenv. Essentially, I&#39;d like to have the output of the command

    which celery

One option is using `sys.executable`, get the folder (which seems to be the `bin` folder of the virtualenv) and that&#39;s it... but I&#39;m not sure.

Doesn&#39;t virtualenv have any kind of method to get the path itself?

Get virtualenv&#39;s bin folder path from script

I am working to set up a Django project on Amazon EC2 with an Ubuntu 14.04 LTS instance. I want to write my code using Python 3. I&#39;ve been advised that the best way to do this is to use `virtualenvwrapper`. I&#39;ve installed `virtualenvwrapper` successfully and put

    export WORKON_HOME=$HOME/.virtualenvs
    export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3.4
    export PROJECT_HOME=$HOME/Devel
    source /usr/local/bin/virtualenvwrapper.sh

into my `.bashrc` file. Now I see:

     /usr/bin/python3.4: Error while finding spec for &#39;virtualenvwrapper.hook_loader&#39; (&lt;class &#39;ImportErro
     r&#39;&gt;: No module named &#39;virtualenvwrapper&#39;)
     virtualenvwrapper.sh: There was a problem running the initialization hooks.     

     If Python could not import the module virtualenvwrapper.hook_loader,
     check that virtualenvwrapper has been installed for
     VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3.4 and that PATH is
     set properly.

How can I fix this?

No module named &#39;virtualenvwrapper&#39;

I have different `virtualenv`&#39;s (made with `virtualenwrapper`) and I&#39;d like to be able to specify which `virtualenv` to use with each project.

Since I&#39;m using the `SublimeREPL` plugin for custom builds, how can I specify which python installation to build my project with?

For example, when I work on project A I want to run scripts with venvA&#39;s python, and when I work on project B I want to run things with venvB (using a different build script).

Sublime text3 and virtualenvs

This is a much discussed issue for OSX 10.6 users, but I haven&#39;t been able to find a solution that works. Here&#39;s my setup:

Python 2.6.1 64bit
Django 1.2.1
MySQL 5.1.47 osx10.6 64bit

I create a virtualenvwrapper with --no-site-packages, then installed Django. When I activate the virtualenv and run python manage.py syncdb, I get this error:

    Traceback (most recent call last):
    File &quot;manage.py&quot;, line 11, in &lt;module&gt;
      execute_manager(settings)
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/core/management/__init__.py&quot;, line 438, in execute_manager
      utility.execute()
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/core/management/__init__.py&quot;, line 379, in execute
      self.fetch_command(subcommand).run_from_argv(self.argv)
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/core/management/__init__.py&quot;, line 257, in fetch_command
      klass = load_command_class(app_name, subcommand)
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/core/management/__init__.py&quot;, line 67, in load_command_class
      module = import_module(&#39;%s.management.commands.%s&#39; % (app_name, name))
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/utils/importlib.py&quot;, line 35, in import_module
      __import__(name)
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/core/management/commands/syncdb.py&quot;, line 7, in &lt;module&gt;
    from django.core.management.sql import custom_sql_for_model, emit_post_sync_signal
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/core/management/sql.py&quot;, line 5, in &lt;module&gt;
    from django.contrib.contenttypes import generic
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/contrib/contenttypes/generic.py&quot;, line 6, in &lt;module&gt;
      from django.db import connection
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/db/__init__.py&quot;, line 75, in &lt;module&gt;
      connection = connections[DEFAULT_DB_ALIAS]
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/db/utils.py&quot;, line 91, in __getitem__
      backend = load_backend(db[&#39;ENGINE&#39;])
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/db/utils.py&quot;, line 32, in load_backend
      return import_module(&#39;.base&#39;, backend_name)
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/utils/importlib.py&quot;, line 35, in import_module
      __import__(name)
    File &quot;/Users/joerobinson/.virtualenvs/dj_tut/lib/python2.6/site-packages/django/db/backends/mysql/base.py&quot;, line 14, in &lt;module&gt;
      raise ImproperlyConfigured(&quot;Error loading MySQLdb module: %s&quot; % e)
    django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb

I&#39;ve also installed the [MySQL for Python][1] adapter, but to no avail (maybe I installed it improperly?). 

Anyone dealt with this before?


  [1]: http://sourceforge.net/projects/mysql-python/files/

How to use MySQLdb with Python and Django in OSX 10.6?

I recently learned how to use virtualenv and virtualenvwrapper in my workflow but I&#39;ve seen pyenv mentioned in a few guides but I can&#39;t seem to get an understanding of what pyenv is and how it is different/similar to virtualenv. Is pyenv a better/newer replacement for virtualenv or a complimentary tool? If the latter what does it do differently and how do the two (and virtualenvwrapper if applicable) work together? 

What is the relationship between virtualenv and pyenv?

In virtualenvwrapper, is there a simple way to list all virtualenv on my machine? 

(like what yolk -l does to list all python packages in the current virtual environment?)

**CLARIFICATION:** &quot;ls -la&quot; in my env directory does not count. I am looking for a virtualenv or virtualenvwrapper specific command.

List all virtualenv

I&#39;m trying to setup virtualenvwrapper on OSX, and all the instructions and tutorials I&#39;ve found tell me to add a source command to .profile, pointing towards virtualenvwrapper.sh. I&#39;ve checked all the python and site-packages directories, and I can&#39;t find any virtualenvwrapper.sh. Is this something I need to download separately? Is pip not installing correctly?

This is the contents of /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/virtualenvwrapper:

    hook_loader.py		hook_loader.pyc		project.py		project.pyc		user_scripts.py		user_scripts.pyc

As you can see, no virtualenvwrapper.sh. Where is it?

Where is virtualenvwrapper.sh after pip install?

I created an environment with the following command: `virtualenv venv --distribute`

I cannot remove it with the following command: `rmvirtualenv venv` -
**This is part of [virtualenvwrapper][1] as mentioned in [answer below for virtualenvwrapper][2]**

I do an `ls`on my current directory and I still see venv

The only way I can remove it seems to be: `sudo rm -rf venv`

Note that the environment is not active. I&#39;m running Ubuntu 11.10. Any ideas? I&#39;ve tried rebooting my system to no avail.


  [1]: http://virtualenvwrapper.readthedocs.io/en/latest/command_ref.html#rmvirtualenv
  [2]: https://stackoverflow.com/a/18624789/452708

How do I remove/delete a virtualenv?

I&#39;m confused as to where I should put my virtualenvs.

With my first django project, I created the project with the command

    django-admin.py startproject djangoproject

I then cd&#39;d into the djangoproject directory and ran the command

    virtualenv env

which created the virtual environment directory at the same level as the inner `djangoproject` directory.

Is this the wrong place in which to create the virtualenv for this particular project?

I&#39;m getting the impression that most people keep all their virtualenvs together in an entirely different directory, e.g. `~/virtualenvs`, and then use virtualenvwrapper to switch back and forth between them.

Is there a correct way to do this?


Where should virtualenvs be created?

I have an environment called `doors` and I would like to rename it to `django` for the [virtualenvwrapper](http://www.doughellmann.com/projects/virtualenvwrapper/).

I&#39;ve noticed that if I just rename the folder `~/.virtualenvs/doors` to `django`, I can now call `workon django`, but the environment still says `(doors)hobbes3@hobbes3`.

Rename an environment with virtualenvwrapper

I installed python 3.3.1 on ubuntu lucid and successfully created a virtualenv as below

    virtualenv envpy331 --python=/usr/local/bin/python3.3

this created a folder `envpy331` on my home dir.

I also have `virtualenvwrapper` installed.But in the docs only `2.4-2.7` versions of `python` are supported..Has anyone tried to  organize the `python3` virtualenv ? If so, can you tell me how ?

virtualenvwrapper and Python 3

After following the instructions on [Doug Hellman&#39;s `virtualenvwrapper` post](https://doughellmann.com/posts/virtualenvwrapper/), I still could not fire up a test environment.

    [mpenning@tsunami ~]$ mkvirtualenv test
    -bash: mkvirtualenv: command not found
    [mpenning@tsunami ~]$

It should be noted that I&#39;m using `WORKON_HOME` that is not in my `$HOME`.  I tried looking for `/usr/local/bin/virtualenvwrapper.sh` as shown in the [`virtualenvwrapper` installation docs](http://virtualenvwrapper.readthedocs.org/en/latest/install.html), but it does not exist.

I&#39;m running CentOS 6 and python 2.6.6, if this matters.

&lt;hr&gt;

    # File: ~/.bash_profile
    # ...
    
    export WORKON_HOME=&quot;/opt/virtual_env/&quot;
    source &quot;/opt/virtual_env/bin/virtualenvwrapper_bashrc&quot;
   



bash: mkvirtualenv: command not found

I&#39;m using virtualenv and the virtualenvwrapper. I can switch between virtualenv&#39;s just fine using the `workon` command. 

    me@mymachine:~$ workon env1
    (env1)me@mymachine:~$ workon env2
    (env2)me@mymachine:~$ workon env1
    (env1)me@mymachine:~$ 

How do I exit all virtual environments and work on my system environment again? Right now, the only way I have of getting back to `me@mymachine:~$` is to exit the shell and start a new one. That&#39;s kind of annoying. Is there a command to work on &quot;nothing&quot;, and if so, what is it? If such a command does not exist, how would I go about creating it?

How to leave/exit/deactivate a Python virtualenv

I have a python program I want to install into my virtualenv - it&#39;s a zip package that I need to unzip and then run a setup.py program - but my question is more regarding how to get these unzipped files into my virtualenv so that the package gets installed into the virtualenv&#39;s site-packages folder?

I can also install from inside my virtualenv using `pip install &lt;package name&gt;`, but for some reason, the package that PIP downloads is out of date.

So - can someone tell me a few easy steps for installing a package manually?

So far I have the basic commands to load up the Virtualenv:

    -bash-3.2$ source ~/.bashrc
    -bash-3.2$ workon test
    (test)-bash-3.2$ //Now I&#39;m working on my virtualenv, but where do I go after this??

So - does it matter where I unzip the python package/program to - or should I be logged in to the virtualenv first before unzipping? After I load up the virtualenv and I&#39;m inside using it with the &#39;workon test&#39; command, will any python package I install, regardless of the directory I find it, install itself into the proper virtualenv&#39;s site-packages folder?

Option 1 is to unzip the python program into /home/username/tmp - then log into my virtualenv, navigate to that folder and run the setup.py program - assuming that the virtualenv will transfer all relevant files to it&#39;s own site-packages folder.

OR scenario 2 is to unzip the files directly into site-packages, and run it from there (after logging in to the virtualenv), etc

Thank you for helping a Python clutz with this! 

Python - manually install package using virtualenv

I&#39;m trying to follow [How To Serve Django Applications with uWSGI and Nginx on Ubuntu 14.04][1] and I&#39;m failing at the very earlier stage, due to amount of output, I placed all related information into [Pastebin.com - #1 paste tool since 2002!][2].

the actual error:

    root@alexus:~# echo &quot;source /usr/local/bin/virtualenvwrapper.sh&quot; &gt;&gt; ~/.bashrc
    root@alexus:~# source ~/.bashrc
    /usr/bin/python3: Error while finding spec for &#39;virtualenvwrapper.hook_loader&#39; (&lt;class &#39;ImportError&#39;&gt;: No module named &#39;virtualenvwrapper&#39;)
    virtualenvwrapper.sh: There was a problem running the initialization hooks.
     
    If Python could not import the module virtualenvwrapper.hook_loader,
    check that virtualenvwrapper has been installed for
    VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3 and that PATH is
    set properly.
    root@alexus:~#

  [1]: https://www.digitalocean.com/community/tutorials/how-to-serve-django-applications-with-uwsgi-and-nginx-on-ubuntu-14-04
  [2]: http://pastebin.com/zYtjFQuM

I&#39;m following how to to the teeth, what am I doing wrong?

/usr/bin/python3: Error while finding spec for &#39;virtualenvwrapper.hook_loader&#39; (&lt;class &#39;ImportError&#39;&gt;: No module named &#39;virtualenvwrapper&#39;)

I&#39;m running Mac OS 10.6.8. and wanted to install in addition to python 2.6 also python 2.7 and use python 2.7 in a new virtualenv. I executed the following steps:


I downloaded python 2.7 and installed it:

    http://www.python.org/ftp/python/2.7.3/python-2.7.3-macosx10.6.dmg

Then I run the command to setup a new virtualenv using python2.7:

    mkvirtualenv --python=python2.7 mynewenv


My .bash_profile looks like the following:



    # needed for virtualenvwrapper
    export WORKON_HOME=$HOME/.virtualenvs
    export VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python
    export VIRTUALENVWRAPPER_VIRTUALENV=/usr/local/bin/virtualenv
    source /usr/local/bin/virtualenvwrapper.sh
    
    
    # Setting PATH for Python 2.7
    # The orginal version is saved in .bash_profile.pysave
    PATH=&quot;/Library/Frameworks/Python.framework/Versions/2.7/bin:${PATH}&quot;
    export PATH


Now when I open the console I get the following error message. 

    ImportError: No module named virtualenvwrapper.hook_loader
    virtualenvwrapper.sh: There was a problem running the initialization hooks. If Python could not import the module virtualenvwrapper.hook_loader, check that virtualenv has been installed for VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python and that PATH is set properly.

I also found in a different post that I should upgrade virtualenvwrapper. That did not help.

    sudo pip install virtualenvwrapper --upgrade


Any help would be appreciated.

Python Virtualenv - No module named virtualenvwrapper.hook_loader

I want to set up a crontab to run a Python script.

Say the script is something like:

    #!/usr/bin/python
    print &quot;hello world&quot;

Is there a way I could specify a virtualenv for that Python script to run in? In shell I&#39;d just do:

    ~$ workon myenv

Is there something equivalent I could do in crontab to activate a virtualenv?

How to set virtualenv for a crontab?

Python 3.3 includes in its standard library the new package `venv`. What does it do, and how does it differ from all the other packages that seem to match the regex `(py)?(v|virtual|pip)?env`?

What is the difference between venv, pyvenv, pyenv, virtualenv, virtualenvwrapper, pipenv, etc?

Note: I&#39;m using virtualenvwrapper.

Before activating the virtual environment:

    $ pip install lxml
    Requirement already satisfied (use --upgrade to upgrade): lxml in /usr/lib/python2.7/dist-packages  
    Cleaning up...  

After activating the virtual environment:

    (test-env)$ pip install lxml
    force/build/lxml/src/lxml/includes/etree_defs.h:9:31: fatal error: 
    libxml/xmlversion.h: No such file or directory

    compilation terminated.

    error: command &#39;gcc&#39; failed with exit status 1

    ----------------------------------------
    Command /home/chaz/dev/envs/test-with-system-python-force/bin/python2
    .7 -c &quot;import setuptools;__file__=&#39;/home/chaz/dev/envs/test-with-
    system-python-force/build/lxml/setup.py&#39;;exec(compile(open(__file__).
    read().replace(&#39;\r\n&#39;, &#39;\n&#39;), __file__, &#39;exec&#39;))&quot; install --record 
    /tmp/pip-bJ6Q_B-record/install-record.txt --single-version-externally
    -managed --install-headers /home/chaz/dev/envs/test-env/include/site/python2.7 failed with error code 1 in 
    /home/chaz/dev/envs/test-env/build/lxml
    Storing complete log in /home/chaz/.pip/pip.log
     

Why can&#39;t I get `pip install lxml` to work within a virtualenv?

    tow-81-235:Projects pessimisticoptimism$ mkvirtualenv development
    -bash: mkvirtualenv: command not found
    tow-81-235:Projects pessimisticoptimism$ sudo pip install virtualenvwrapper
    Password:
    Requirement already satisfied (use --upgrade to upgrade): virtualenvwrapper in /Library/Python/2.7/site-packages
    Requirement already satisfied (use --upgrade to upgrade): virtualenv in /Library/Python/2.7/site-packages (from virtualenvwrapper)
    Requirement already satisfied (use --upgrade to upgrade): virtualenv-clone in /Library/Python/2.7/site-packages (from virtualenvwrapper)
    Cleaning up...
    tow-81-235:Projects pessimisticoptimism$ mkvirtualenv development
    -bash: mkvirtualenv: command not found

Why am I getting this error? I have `virtualenv` and `virtualenvwrapper` installed. I&#39;d like to use `mkvirtualenv` and `workon`. I find it odd that `virtualenv` is working, but `virtualenvwrapper` isn&#39;t.

virtualenvwrapper commands aren&#39;t working

I have a Debian system currently running with python 2.5.4. I got virtualenv properly installed, everything is working fine. Is there a possibility that I can use a virtualenv with a different version of Python?

I compiled Python 2.6.2 and would like to use it with some virtualenv. Is it enough to overwrite the binary file? Or do I have to change something in respect to the libraries?

Use different Python version with virtualenv

So, once again, I make a nice python program which makes my life ever the more easier and saves a lot of time. Ofcourse, this involves a virtualenv, made with the `mkvirtualenv` function of virtualenvwrapper. The project has a requirements.txt file with a few required libraries (requests too :D) and the program won&#39;t run without these libraries.

I am trying to add a `bin/run-app` executable shell script which would be in my path (symlink actually). Now, inside this script, I need to switch to the virtualenv before I can run this program. So I put this in

    #!/bin/bash
    # cd into the project directory
    workon &quot;$(cat .venv)&quot;
    python main.py

A file `.venv` contains the virtualenv name. But when I run this script, I get `workon: command not found` error.

Of course, I have the virtualenvwrapper.sh sourced in my bashrc but it doesn&#39;t seem to be available in this shell script.

So, how can I access those virtualenvwrapper functions here? Or am I doing this the wrong way? How do you launch your python tools, each of which has its own virtualenv!?

virtualenvwrapper functions unavailable in shell scripts

How to freeze packages installed only in the virtual environment, that is, without the global ones?

How to freeze packages installed only in the virtual environment?

I have a bunch of projects in my `~/Documents`. I work almost exclusively in python, so these are basically all python projects. Each one, e.g. `~/Documents/foo` has its own virtualenv, `~/Documents/foo/venv` (they&#39;re always called venv). Whenever I switch between projects, which is ~10 times a day, I do 

    deactivate
    cd ..
    cd foo
    source venv/bin/activate

I&#39;ve reached the point where I&#39;m sick of typing `deactivate` and `source venv/bin/activate`. **I&#39;m looking for a way to just `cd ../foo` and have the virtualenv operations handled for me.**

- I&#39;m familiar with [VirtualEnvWrapper][1] which is a little heavy-handed in my opinion. It seems to move all your virtualenvs somewhere else, and adds a little more complexity than it removes, as far as I can tell. (Dissenting opinions welcome!)

- I am not too familiar with shell scripting. If you can recommend a low-maintenance script to add to my `~/.zshrc` that accomplishes this, that would be more than enough, but from some quick googling, I haven&#39;t found such a script. 

- I&#39;m a `zsh`/[`oh-my-zsh`][2] user. `oh-my-zsh` doesn&#39;t seem to have a plugin for this. The best answer to this question would be someone contributing an `oh-my-zsh` plugin which does this. (Which I might do if the answers here are lackluster. 


  [1]: https://virtualenvwrapper.readthedocs.io/en/latest/
  [2]: https://github.com/robbyrussell/oh-my-zsh

How to automatically activate virtualenvs when cd&#39;ing into a directory

I&#39;m trying to create a virtualenv with `virtualenvwrapper`, but when I use `mkvirtualenv` I get the following :

    ERROR: virtualenvwrapper could not find virtualenv in your path

I assumed it was a **PYTHONPATH** problem.
But if I do a `pip show virtualenv` I get the following :

    ---
    Metadata-Version: 2.0
    Name: virtualenv
    Version: 13.1.0
    Summary: Virtual Python Environment builder
    Home-page: https://virtualenv.pypa.io/
    Author: Jannis Leidel, Carl Meyer and Brian Rosner
    Author-email: python-virtualenv@groups.google.com
    License: MIT
    Location: /Volumes/Data/nfs/zfs-student-3/users/2013_paris/vmonteco/Library/Python/2.7/lib/python/site-packages
    Requires:

And here is my **PYTHONPATH** :

*/nfs/zfs-student-3/users/2013_paris/vmonteco/Library/Python/2.7/bin:/nfs/zfs-student-3/users/2013_paris/vmonteco/Library/Python/2.7/bin:/nfs/zfs-student-3/users/2013_paris/vmonteco/Library/Python/2.7/lib/python/site-packages:/Volumes/Data/nfs/zfs-student-3/users/2013_paris/vmonteco/Library/Python/2.7/lib/python/site-packages:~/.brew/Cellar*

It contains the directory containing virtualenv!

(i-e : **/Volumes/Data/nfs/zfs-student-3/users/2013_paris/vmonteco/Library/Python/2.7/lib/python/site-packages** )

My **~/.zshrc** contains :

    export WORKON_HOME=~/Envs
    export PROJECT_HOME=$HOME/Devel
    source $HOME&quot;/Library/Python/2.7/bin/virtualenvwrapper.sh&quot;


**EDIT :**
virtualenvwrapper.sh is written in bash, perhaps should I check my **PATH** instead of my **PYTHONPATH** ?


So, what could the problem be? How could I fix it?

Thank you in advance for your help.


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Can't install virtualenvwrapper on OSX 10.11 El Capitan