如何将其他函数中的元素打印到主函数中

def other_function():
    element = "Hello, World!"
    return element

def main():
    element = other_function()
    print(element)

main()

element = ""

def other_function():
    global element
    element = "Hello, World!"

def main():
    other_function()
    print(element)

main()

def other_function(element):
    element = "Hello, World!"

def main():
    element = ""
    other_function(element)
    print(element)

main()