A python decorator that prints the number of time a function has been executed.

call_counter.py

def counter(func):
    """
    A decorator that prints the number of time a function has been executed.
    """
    counter.count = 0
    def wrapper(*args, **kwargs):
        counter.count = counter.count + 1
        res = func(*args, **kwargs)
        print func.__name__, "has been used : ", counter.count, "X"
        return res
    return wrapper