python -在不同函数中返回值

def add(a, b):
    return a + b

result = add(3, 5)
print(result)  # 输出8

def get_name_and_age():
    name = "Alice"
    age = 25
    return name, age

name, age = get_name_and_age()
print(name)  # 输出"Alice"
print(age)   # 输出25

result = 0  # 全局变量

def add(a, b):
    global result  # 声明result为全局变量
    result = a + b

def multiply(c, d):
    global result  # 声明result为全局变量
    result = result * c * d

add(3, 5)
multiply(2, 4)
print(result)  # 输出64