Stop python from generating pyc files

Question

When I change my Python code, I often need to delete the associated pyc file, or Python will not regenerate it and will run the old code. Is there a way to tell Python not to generated pyc files?

Python should automatically make new `.pyc` files whenever the source `.py` files have changed. Why do you think that is not happening? — Steven T. Snyder, Feb 23 '12 at 06:49
Also, I think this is an exact duplicate of http://stackoverflow.com/questions/154443/how-to-avoid-pyc-files — Steven T. Snyder, Feb 23 '12 at 06:49

score 5 · Answer 1 · edited Oct 21 '19 at 16:58

5

Edit the .bashrc file and add the following lines to the very end of the file:

PYTHONDONTWRITEBYTECODE=True
export PYTHONDONTWRITEBYTECODE

Restart your terminal or do the following:

$ source ~/.bashrc

edited Oct 21 '19 at 16:58

kenlukas

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answered Apr 25 '19 at 11:37

Gopinath Langote

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score 3 · Answer 2 · answered Feb 23 '12 at 06:50

When you import a file, Python will first look at the corresponding .py file, and if it's newer than the .pyc file, it'll be recompiled.

I'd advise you to check that your system (and its clock) is acting sanely, so the .py files you modify get a new modified timestamp.

See the docs: http://docs.python.org/tutorial/modules.html#compiled-python-files

Stop python from generating pyc files

2 Answers2