How to get one variable from multiple return variables

Question

Hi All I have a function that returns multiple variables. Based on a specific value of x, I want to get one variable from the function. I have tried using "_" to assign the variables I do not need like a, _, _ = func() but its not working. Below is my sample code for demonstration. Thanks in advance.

x1 = 1
x2 = 3
x3 = 4

def func():
    if x1 == 1:
       a = x1 + 2
    if x2 == 2:
       b = 6
    if x3 == 3:
       c = x3 + 8

  return a, b, c

def get():
   if x1 == 1:
      a, _, _ = func()

get()

Asked By: daniel

||

Source

Answer 1

When the second if condition is false, you never assign b, so you get an error when you try to use it in return a, b, c.

You can solve this problem by giving all the variables default values first.

def func():
    a = b = c = None
    if x1 == 1:
       a = x1 + 2
    if x2 == 2:
       b = 6
    if x3 == 3:
       c = x3 + 8

    return a, b, c

Answered By: Barmar

How to get one variable from multiple return variables

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