get the python command-line options passed to the python interpreter

Question

How to programmatically retrieve the interpreter options passed to the python interpreter within that instance?

For example, given command

python -B -u script.py

what Python code lists the passed interpreter command-line options -B and -u?

I could query sys.dont_write_bytecode to infer that command-line option -B was passed. But I want Python code that is generic to any interpreter option. I imagine a code snippet that would return a list of command-line options the interpreter was given, e.g. [ '-B', '-u' ].

To question reviewers, this question is not answered in How to get python interpreter full argv command line options?. That answer for that question suggests changing the C-runtime code of the interpreter and recompiling Python. That is not a suitable solution for my needs.

@Hiadore can you be more specific - which function in argparse? — JamesThomasMoon
– JamesThomasMoon, Commented Sep 14, 2019 at 20:09
Possible duplicate of How to get python interpreter full argv command line options? — norok2
– norok2, Commented Sep 14, 2019 at 20:14
Please see this answer: stackoverflow.com/a/57914236/5588279 — Sraw
– Sraw, Commented Sep 14, 2019 at 20:17
Btw, I want to point out that this an implementation-specific problem. So the solution won't work on the others other than C implementation. — Sraw
– Sraw, Commented Sep 14, 2019 at 20:19

BIT-REAPER · Accepted Answer · 2021-05-02 10:46:50Z

1

You can use sys.argv

example:

C:\Users\Rick>python -c "from sys import argv;print(argv)"
['-c']

answered May 2, 2021 at 10:46

BIT-REAPER

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