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how to use decorator in class method

import time


def myTimer(func, *args, **kwargs):
    def wrapper():
        start = time.perf_counter()
        func(*args, **kwargs)
        elapsed_time = time.perf_counter() - start
        print(elapsed_time)

    return wrapper


class Example:
    def __init__(self):
        pass

    @myTimer
    def data(self):
        return [i for i in range(10000)]


e = Example()
e.data()

out_put = TypeError: wrapper() takes 0 positional arguments but 1 was given

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  • 1
    The *args, **kwargs parameters should be on wrapper, not myTimer. Commented Jan 2, 2022 at 12:54

1 Answer 1

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@khelwood said that first, but i was trying this edit

def myTimer(func):
    def wrapper(*args, **kwargs):
        start = time.perf_counter()
        func(*args, **kwargs)
        elapsed_time = time.perf_counter() - start
        print(elapsed_time)

    return wrapper


class Example:
    def __init__(self):
        pass

    @myTimer
    def data(self):
        return [i for i in range(10000)]


e = Example()
e.data()
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