How do you set your pythonpath in an already-created virtualenv

Question

What file do I edit  and how  I created a virtual environment

User · Answer

The comment by  s29 should be an answer   One way to add a directory to the virtual environment is to install virtualenvwrapper  which is useful for many things  and then do  mkvirtualenv myenv workon myenv add2virtualenv    for current directory add2virtualenv   my path   If you want to remove these path edit the file myenvhomedir lib python2 7 site-packages  virtualenv path extensions pth  Documentation on virtualenvwrapper can be found at http   virtualenvwrapper readthedocs org en latest   Specific documentation on this feature can be found at http   virtualenvwrapper readthedocs org en latest command ref html highlight add2virtualenv

User · Answer

I modified my activate script to source the file  virtualenvrc  if it exists in the current directory  and to save restore PYTHONPATH on activate deactivate   You can find the patched activate script here   It s a drop-in replacement for the activate script created by virtualenv 1 11 6   Then I added something like this to my  virtualenvrc   export PYTHONPATH    PYTHONPATH   PYTHONPATH   some library path

User · Answer

You can create a  pth file that contains the directory to search for  and place it in the  venv-root  lib  python-version  site-packages directory  E g   cd   python -c  quot from distutils sysconfig import get python lib  print get python lib    quot   echo  some library path  gt  some-library pth  The effect is the same as adding  some library path to sys path  and remain local to the virtualenv setup

User · Answer

The most elegant solution to this problem is here  Original answer remains  but this is a messy solution   If you want to change the PYTHONPATH used in a virtualenv  you can add the following line to your virtualenv s bin activate file  export PYTHONPATH  quot  the path you want quot   This way  the new PYTHONPATH will be set each time you use this virtualenv  EDIT   to answer  RamRachum s comment  To have it restored to its original value on deactivate  you could add export OLD PYTHONPATH  quot  PYTHONPATH quot   before the previously mentioned line  and add the following line to your bin postdeactivate script  export PYTHONPATH  quot  OLD PYTHONPATH quot

User · Answer

It s already answered here -  Is my virtual environment  python  causing my PYTHONPATH to break   UNIX LINUX  Add  export PYTHONPATH  usr local lib python2 0  this to    bashrc file and source it by typing  source    bashrc  OR       bashrc    WINDOWS XP  1  Go to the Control panel 2  Double click System 3  Go to the Advanced tab 4  Click on Environment Variables  In the System Variables window  check if you have a variable named PYTHONPATH  If you have one already  check that it points to the right directories  If you don t have one already   click the New button and create it   PYTHON CODE  Alternatively  you can also do below your code -  import sys sys path append   home me mypy

User · Answer

Initialize your virtualenv   cd venv  source bin activate    Just set or change your python path by entering command following    export PYTHONPATH   home django srmvenv lib python3 4     for checking python path enter in python       python          gt   gt  import sys          gt   gt  sys path

[python] How do you set your pythonpath in an already-created virtualenv?

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