python - Argparse in Jupyter Notebook throws a TypeError

Question

Using argparse in a Jupyter Notebook throws a TypeError. The same code works fine if I execute the same code as a script. MWE:

import argparse

parser = argparse.ArgumentParser(description='Foo')
parser.add_argument('--name', '-n', default='foo', help='foo')

args = parser.parse_args()

Result:

TypeError: 'level' is an invalid keyword argument for this function

Answer 1

One solution is to parse an empty list of arguments:

import argparse

parser = argparse.ArgumentParser(description='Foo')
parser.add_argument('--name', '-n', default='foo', help='foo')

args = parser.parse_args([])

Another is to use parse_known_args:

args, _ = parser.parse_known_args()