What is the purpose of hash function in python

Question

Can you give an example?

How is it different from dictionary in python? since dictionary is remotely considered as a hash map.

Answer 1

The hash() method returns the hash value of an object if it has one. Hash values are just integers which are used to compare dictionary keys during a dictionary lookup quickly. Internally, hash() method calls __hash__() method of an object which are set by default for any object.