call_count.py

def call_count(func):
    def wrapper(*args, **kwargs):
        wrapper.call_count += 1
        return func(*args, **kwargs)
    wrapper.call_count = 0
    return wrapper


@call_count
def foo(x):
    return x + 1
  

foo(1)
foo(2)
print(foo.call_count)
foo(3)
print(foo.call_count)