import argparse

# Initialize the argument parser
parser = argparse.ArgumentParser(description='Project Manager CLI')

# Add subcommands for add, list, and complete
subparsers = parser.add_subparsers(dest='command', help='Sub-commands help')
add_parser = subparsers.add_parser('add', help='Add a new task')
list_parser = subparsers.add_parser('list', help='List all tasks')
complete_parser = subparsers.add_parser('complete', help='Mark a task as complete')

# Parse the arguments
args = parser.parse_args()

if args.command == 'add':
    print(f'Adding new task...')
elif args.command == 'list':
    print(f'Listing all tasks...')
elif args.command == 'complete':
    print(f'Marking a task as complete...')