def test1():
print('hello') #函数无返回值
def test2():
print('world')
return 1 #函数有返回值, 可以定义一个变量var = return 1
def test3():
print('suqin') #函数的返回值是元组
return 1, 'lvhonglei', [2, 3], {'name': 'suqin','age':'18'}
#return x+y
#return test2 可以返回表达式，函数
test1()
test2()
test3()
print('----------------------------------------------------')
x = test1()
y = test2()
z = test3()
print(x) # 返回的是整个函数体的结果，test1无返回值，那么打印none
print(y)
print(z)
执行结果
hello
world
suqin
----------------------------------------------------
hello
world
suqin
None
1
(1, 'lvhonglei', [2, 3], {'name': 'suqin', 'age': '18'})
a,b = (1,2)
a,b = [1,2]
a,b = {"name":"suqin","age":18}
a = name
b = age
a,b = {"name":"suqin","age":18}.items()
a = ("name","suqin")
b = ("age",18)