fork download
copy 
  1. class IterPerson(type):
  2.     def __new__ (cls, name, bases, dct):
  3.         dct['_instances'] = []
  4.         return super().__new__(cls, name, bases, dct)
  5.  
  6.     def __call__(cls, *args, **kwargs):
  7.         instance = super().__call__(*args, **kwargs)
  8.         cls._instances.append(instance)
  9.         return instance
  10.  
  11.     def __iter__(cls):
  12.         return iter(cls._instances)
  13.  
  14.  
  15. class Person(metaclass=IterPerson):
  16.     def __init__(self, name, age, height):
  17.         self.name = name
  18.         self.age = age
  19.         self.height = height
  20.  
  21.  
  22. if __name__ == '__main__':
  23.     Jeff = Person("Jeff", 20, "1.6")
  24.     Bob = Person("Bob", 39, "1.4")
  25.     Helen = Person("Helen", 19, "1.3")
  26.  
  27.     for person in Person:
  28.         print(person.name, "is", person.age)
Success #stdin #stdout 0.03s 27632KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Jeff is 20
Bob is 39
Helen is 19
https://ideone.com/mK2g2h
language:
Python 3 (python  3.9.5)
created:
5 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!