Please explain what is going on with the or operator here in python
>>>sen='abcdef'
>>>'a' in sen
True
>>>'v' or 'z' in sen
'v'
>>>('v' or 'z') in sen
False
>>>('v' or 'a') in sen
False
>>>('a' or 'v') in sen
True
The first output obviously makes sense. From the second output, I do not follow what is going on!
When you use the parenthesis, you tell the interpreter to interpret what's inside the parenthesis first. So let's go over the outputs, starting from the second one:
>>>('v' or 'z') in sen
What you did here is:
('v' or 'z') translates to v because it goes from left to right - They both evaluate to True, so if you would to write 'z' or 'v' it would evaluate to z. So you are checking if v is inside sen --> False.
Moving on:
>>>('v' or 'a') in sen --> is 'v' inside sen?
False
>>>('a' or 'v') in sen --> is 'a' inside sen?
True