How to install python modules in blender

Question

I've been trying to install pyserial for blender, but I can only install it to python32 on my C drive, is there anything i can do to have it install to blender or have blender import from python32

Answer 1

Blender has its own python installation and libraries. You can try to install your packages to blender directly. My dir for example: ...\Blender 2.63\2.63\scripts\modules

Otherwise, you can always hardcode the paths directly in your code with sys.path.append("...")

More info about installing modules available here, read about python setup.py install --home=<dir>

Answer 2

For windows, with no special permissions, and from blender python script only:

1. Install package you want from blender script (tqdm for example given below):

   import pip
   pip.main(['install', 'tqdm', '--user'])
   

2. From blender console watch the path where pip actually installs packages in your configuration (WARNING: The script tqdm.exe is installed in 'C:\Users\<Username>\AppData\Roaming\Python\Python39\Scripts' which is not on PATH):

   

3. In blender script add the path where your blender's pip installs packages to PATH:

   import sys
   packages_path = "C:\\Users\\<Username>\\AppData\\Roaming\\Python\\Python39\\Scripts" + "\\..\\site-packages"
   sys.path.insert(0, packages_path )
   

4. Successfully import your package in the script:

   import tqdm
   

Update 1

To show Blender terminal in v2.93 click Window -> Toggle System Console

Update 2

The whole script

# 1. launch in blender python interpreter

import pip
pip.main(['install', 'tqdm', '--user'])

# 2. watch blender's python path in console output at this moment
# 3. insert it to packages_path below
# 4. uncomment the next code and launch script in blender interpreter again

# import sys
# packages_path = "C:\\Users\\<Username>\\AppData\\Roaming\\Python\\Python39\\Scripts" + "\\..\\site-packages" # the path you see in console
# sys.path.insert(0, packages_path )
# import tqdm