What does “variable or 0” mean in python?

Question

What is the meaning of the following statement in python:

x = variable_1 or 0

variable_1 is an object. What value does x

Answer 1

x will be 0 if variable_1 evaluates as false, otherwise it will be variable_1

>>> 'abc' or 0
'abc'
>>> '' or 0
0
>>> ['a', 'b', 'c'] or 0
['a', 'b', 'c']
>>> [] or 0
0