如何只调用一个函数一次

called = False

def my_function():
    global called
    if not called:
        called = True
        # 执行函数体内的代码

def once(func):
    called = False
    def wrapper(*args, **kwargs):
        nonlocal called
        if not called:
            called = True
            return func(*args, **kwargs)
    return wrapper

@once
def my_function():
    # 执行函数体内的代码

def once(func):
    called = False
    def wrapper(*args, **kwargs):
        nonlocal called
        if not called:
            called = True
            return func(*args, **kwargs)
    return wrapper

@once
def my_function():
    # 执行函数体内的代码