What does hash do in python?

Question

I saw an example of code where a hash function is applied to the tuple. As a result, it returns a negative integer. I wonder what does this function do. Google does not help. I found a page that explains how the hash is calculated but it does not explain why we need this function.

Answer 1

In Python, a hash is a fixed-sized integer that identifies a particular value. Each value needs to have its own hash, so for the same value, you will get the same hash even if it's not the same object.

>>> hash("Look at me!") 

4343814758193556824 

>>> f = "Look at me!" 

>>> hash(f) 

4343814758193556824

To know more about this you can have a look at the following video tutorial:-