@decorator

"""
Декоратор считающий количество вызовов декторируемого метода класса
"""


class tracer(object):
    def __init__(self, func):
        self.calls = 0
        self.func = func
    def __call__(self, *args, **kwargs):
        self.calls += 1
        print('calls %s to %s' % (self.calls, self.func.__name__))
        return self.func(*args, **kwargs)
    def __get__(self, instance, owner):
        def wrapper(*args, **kwargs):
            return self(instance, *args, **kwargs)
        return wrapper


"""
Этот же декоратор на основе функции
"""
def tracer(func):
    calls = 0
    def onCall(*args, **kwargs):
        nonlocal calls
        calls += 1
        print('call %s to %s' % (calls, func.__name__))
        return func(*args, **kwargs)
    return onCall


class Person:
    def __init__(self, fname, lname, pay):
        self.fname = fname
        self.lname = lname
        self.pay = pay

    @tracer
    def giveRaise(self, percent):
        self.pay += self.pay * percent // 100
        return '%s pay now in %s' % (self.fname, self.pay)

    @tracer
    def fullName(self):
        return self.fname + ' ' + self.lname


@tracer
def func(a, b, c):
    return a + b + c