I want to call (on bash) a Python script in this two ways without any
error.
./arg.py
./arg.py TEST
It means that the parameter (here with the value `TEST`) should be
optional. With argparse I only know a way to create optional paramters
when they have a switch (like `--name`).
Is there a way to fix that?
#!/usr/bin/env python3
import sys
import argparse
parser = argparse.ArgumentParser(description=__file__)
# must have
#parser.add_argument('name', metavar='NAME', type=str)
# optional BUT with a switch I don't want
#parser.add_argument('--name', metavar='NAME', type=str)
# store all arguments in objects/variables of the local namespace
locals().update(vars(parser.parse_args()))
print(name)
sys.exit()
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