Python make an object hashable

class Hero:
    def __init__(self, name, age):
        self.name = name
        self.age = age

    def __str__(self):
        return self.name + str(self.age)

    def __hash__(self):
        print(hash(str(self)))
        return hash(str(self))

    def __eq__(self,other):
        return self.name == other.name and self.age== other.age



heroes = set()
heroes.add(Hero('Zina Portnova', 16)) # gets hash -8926039986155829407
print(len(heroes)) # gets 1

heroes.add(Hero('Lara Miheenko', 17)) # gets hash -2822451113328084695
print(len(heroes)) # gets 2

heroes.add(Hero('Zina Portnova', 16)) # gets hash -8926039986155829407
print(len(heroes)) # gets 2

Source: stackoverflow.com

Similar codes

12 votes300 views2 answers
Append file to list python
Python
-1 vote266 views1 answer
Matplotlib units of scatter size
Python
0 vote189 views1 answer
Add values to add value in a matplotlib image
Python
0 vote195 views1 answer
Starting python project
Python
0 vote211 views1 answer
Python csv delete all rows
Python
1 vote203 views2 answers
Crop image using opencv with height and width
Python
1 vote202 views2 answers
Pygame left click
Python
21 votes201 views10 answers
How to print in python
Python
0 vote211 views1 answer
ImportError: cannot import name 'dedent' from 'matplotlib.cbook'
Python
0 vote201 views1 answer
Issue AttributeError: ‘numpy.ndarray’ object has no attribute ‘index’
Python