如何从一个函数中取出一个变量到另一个函数

def function1():
    variable = "Hello"
    function2(variable)

def function2(variable):
    print(variable)

function1()

variable = "Hello"

def function1():
    global variable
    variable = "World"
    function2()

def function2():
    print(variable)

function1()

def function1():
    variable = "Hello"
    return variable

def function2():
    variable = function1()
    print(variable)

function2()