uhm.py

def uhm(f):
    class Wrapper:
        def __getitem__(self, arg):
            if arg is None:
                return f()
            elif isinstance(arg, tuple):
                return f(*arg)
            else:
                return f(arg)
    return Wrapper()

@uhm
def hello(name):
    print(f'hello {name}!')

@uhm
def repeat(name, times):
    for _ in range(times):
        hello[name]

@uhm
def print_smth():
    print('something')

@uhm
def sqrt(n, iterations):
    guess = 10.0
    for _ in range(iterations):
        guess = guess - (guess * guess - n) / (2.0 * guess)
    return guess

hello['jimmy']
repeat['bob', 10]

print_smth[None]

print(sqrt[25.0, 20])
print(sqrt[50.0, 15])