Python Return Multiple Values so it can be used in another function

Question

The easiest way to show this is an example:

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

def cat(c, d):
    return c % 2, d % 2

If I type cat(4,5) I properly get (0,1). However if I try hat(cat(4,5)) instead of getting 1, I get an error saying hat needs more values. In my real function I am dealing with a lot more than 2 arguments, so what is the proper way to fix this

Remi Guan · Accepted Answer · 2015-10-31 23:43:10Z

8

The cat function actually returns a tuple, when used as an argument to hat, it can only match the tuple against the first argument a. You need to expand the tuple into multiple arguments.

Try a call like:

hat(*cat(4,5))

The * will expand the tuple and bind against all the arguments.

edited Oct 31, 2015 at 23:43

Remi Guan

22.5k17 gold badges68 silver badges90 bronze badges

answered Oct 31, 2015 at 23:39

swstephe

1,91011 silver badges19 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Python Return Multiple Values so it can be used in another function

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related