<human>:  Python program to argparse check if default is used.
<bot>: Here is a Python program to check if default is used

import argparse

def check_if_default_used(args):
  """
  Checks if default is used.

  Parameters:
  ----------
  args: argparse.Namespace

  """
  if args.default is not None:
    return True
  else:
    return False

# Enter the arguments
parser = argparse.ArgumentParser()
parser.add_argument('--default', type=int, default=1)
args = parser.parse_args()

# Calling the function
print((check_if_default_used(args)))

#Example Output
# True

#Remember to inspect code for bugs.