如何在 class 方法中使用装饰器

Question

如何在class方法中使用装饰器

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() 采用 0 个位置参数，但给出了 1 个

Answer 1

@khelwood 先说了，但我正在尝试这个编辑

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()

如何在 class 方法中使用装饰器

how to use decorator in class method

python

decorator

wrapper

class-method