ex50_zan8.py

from time import time, sleep
from functools import wraps


def to_string(func):
    @wraps(func)
    def wrapper(*args, **kwargs):
        args = [ f'{v}' for v in args]
        return func(*args, **kwargs)
    return wrapper


def add_brackets(left='[', right=']'):
    def decorator(func):
        @wraps(func)
        def wrapper(*args, **kwargs):
            args = [ f'{left}{v}{right}' for v in args]
            return func(*args, **kwargs)
        return wrapper
    return decorator


@add_brackets(left='<',right='>')
@to_string
def concat(*args, **kwargs):
    '''concatenate list elements with sep'''
    sep = kwargs.get('sep', ';')
    return sep.join(args)


if __name__ == '__main__':
    users = ['anna', 'maria', 'markus', 'jane']
    values = [11, 12, 34, 6]

    print(concat(*users))
    print(concat(*users, sep=' | '))
    
    print(concat(*values, sep=','))

    print('---')