[python]函数返回多个return值

python支持函数直接返回多个变量,具体用法以下:

>>> def test():
...     a=2
...     b=3
...     return a,b
...
>>> print(test())
(2, 3)
>>> a,b=test()
>>> print(a)
2
>>> print(b)
3
>>> print(test()[0])
2
>>> print(test()[1])
3