Re: Pip installs to unexpected place

On Sat, 19 Apr 2025 15:56:16 -0400, Thomas Passin wrote:

My problem with venvs, especially if I have more than one, is that I
eventually forget what they were for and what is different about each
one. If there's only one and it's used for all non-system work, that's
OK but beyond that and they tend to suffer knowledge rot.

My Python directory has

apple/   create/  fastapi/  lunar/  numerical/  pyside6/  weather/
comics/  django/  folium/   ml/  sqlite/  coursera/  impractical/
nn/  pyqt/  torch/

Not all like sqlite are venvs since no additional modules are needed. Even
if I'm a little hazy about 'apple' after a while a quick look at the
Python file shows 'https://itunes.apple.com/search' and I remember it is
to pull down artist/track info from the itunes database.

I also try to remember to run 'pythom -m pip freeze > requirements.txt'
after I get everything set up. That way if a OS update installs a new
version of Python  something like

python3 -m venv folium
cd folium
. bin/activate
python -m pip install -r requirements.txt

will refresh the venv and install the appropriate packages for the new
Python version. That's faster than looking at lib/python3.10/site-packages
or whatever the previous version was and adding the dependencies  or
trying to run the py file and getting

Traceback (most recent call last):
  File "/home/rbowman/work/python/impractical/benford.py", line 5, in
<module>
    import matplotlib.pyplot as plt
ModuleNotFoundError: No module named 'matplotlib'