Laxmikant - 10 months ago 43

Python Question

I have two objects which returns two values, lets say x1, x2. I just have to check whether the values exist or not and if exists it should return those, which is not None,False, 0.

This is just simple try, which is OK:

`def get_valid_keys(x1, x2):`

""" """

a = []

if x1: a.append(x1)

if x2: a.append(x2)

return a

But I feel,there should be something in python which would return above variables instead of values with an efficient way:

like:

`>>> x1, x2 = 0, 1`

>>> x1 or x2

1 # It should return x2

>>> x1, x2 = 1, 0

>>> x1 or x2

1 # It should return x1

>>> x1, x2 = 0, 0

>>> x1 or x2

0 # It should return None

>>> x1, x2 = 1, 1

>>> x1 or x2

1 # It should return x1, x2

Source (Stackoverflow)