import argparse

def encode_options(parser):

"""Encodes command-line options for validation and fallback."""

# Store parsed arguments in a dictionary for easier access

args = parser.parse_args()

encoded_args = {}

for arg_name, arg_value in vars(args).items():

# Handle different option types (e.g., boolean, string, integer)

if isinstance(arg_value, bool):

encoded_args[arg_name] = int(arg_value) # Convert boolean to integer (0 or 1)

elif isinstance(arg_value, str):

encoded_args[arg_name] = arg_value.lower() #Convert string to lower case

elif isinstance(arg_value, int):

encoded_args[arg_name] = arg_value

else:

encoded_args[arg_name] = str(arg_value) #Convert other types to string

#Implement validation and fallback logic

if arg_name == 'mode':

if encoded_args[arg_name] not in ['a', 'b', 'c']:

print(f"Invalid mode '{encoded_args[arg_name]}'. Falling back to 'a'.")

encoded_args[arg_name] = 'a'

elif arg_name == 'count':

if encoded_args[arg_name] < 0:

print(f"Invalid count '{encoded_args[arg_name]}'. Falling back to 1.")

encoded_args[arg_name] = 1

return encoded_args

if __name__ == '__main__':

parser = argparse.ArgumentParser(description='Example command-line tool.')

parser.add_argument('--mode', choices=['a', 'b', 'c'], help='Operation mode')

parser.add_argument('--count', type=int, help='Number of iterations')

parser.add_argument('--verbose', action='store_true', help='Enable verbose output')

encoded_args = encode_options(parser)

print(encoded_args)