import argparse

import sys

def deduplicate_cli_args(parser, args_list, max_retries=3):

"""

Deduplicates CLI arguments from a list, handling potential errors with retry logic.

Args:

parser: The argparse.ArgumentParser object.

args_list: A list of strings representing the CLI arguments.

max_retries: The maximum number of retries if an error occurs during deduplication.

Returns:

A dictionary where keys are argument names and values are the corresponding values.

Returns None if the operation fails after max_retries attempts.

"""

retries = 0

while retries < max_retries:

try:

args = parser.parse_args(args_list)

return vars(args)

except Exception as e:

retries += 1

if retries < max_retries:

print(f"Deduplication failed (attempt {retries}/{max_retries}): {e}", file=sys.stderr)

# Optionally add a delay before retrying

# import time

# time.sleep(0.1)

else:

print(f"Deduplication failed after {max_retries} attempts: {e}", file=sys.stderr)

return None

if __name__ == '__main__':

parser = argparse.ArgumentParser()

parser.add_argument("--a", type=str, help="Argument a")

parser.add_argument("--b", type=str, help="Argument b")

parser.add_argument("--a", type=str, help="Duplicate argument a") #intentional duplicate

args_to_deduplicate = ["--a", "value1", "--b", "value2", "--a", "value3"]

deduplicated_args = deduplicate_cli_args(parser, args_to_deduplicate)

if deduplicated_args:

print("Deduplicated arguments:")

print(deduplicated_args)

else:

print("Deduplication failed.")