argparse handles empty string differently on Linux and Windows 馃檧聽#94417
Description
Bug report
Consider the code
import argparse
import sys
print(f"argv = {sys.argv}")
parser = argparse.ArgumentParser(description='Print value.')
parser.add_argument('--value', type=str, dest="value")
args = parser.parse_args()
print(f"Passed --value = '{args.value}'")
Running as:
python temp.py --value ''
Result on Windows:
argv = ['temp.py', '--value']
usage: temp.py [-h] [--value VALUE]
temp.py: error: argument --value: expected one argument
Result on Linux (I used Ubuntu from WSL):
argv = ['temp.py', '--value', '']
Passed --value = ''
As a simple solution, we can just remove empty values from the argv to have the same initial list of arguments on both OSes. If we need to preserve the existing logic of taking empty string on Linux, we may implement a smarter algorithm. Feel free to hint me which way we will go if any. I'll be honored to contribute to Python 馃槉.