New submission from Gharg <[email protected]>:
I have a problem regarding args parameter of ArgumentParser.parse_args.
For example:
-------------------------------------
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("--boolean", type=bool)
parsed_args = parser.parse_args(["--boolean=''"])
--------------------------------------
results in parsed_args.boolean evaluate to True.
While i understand why this is happening (inner call of bool("''") evaluates to
True), i don't know if that is an expected behavior.
If we look from console argument pass perspective with the example altered:
test.py
-------------------------------------
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("--boolean", type=bool)
parsed_args = parser.parse_args()
--------------------------------------
If i now call:
python test.py --boolean=""
parsed_args.boolean will evaluate to False.
----------
messages: 366608
nosy: Gharg
priority: normal
severity: normal
status: open
title: argparse parse_args args parameter bug or intended
type: behavior
versions: Python 3.7
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Python tracker <[email protected]>
<https://bugs.python.org/issue40303>
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