calling a class object in an iterative way on python

Question

I made the next class

obj = MyClass()

fds=['a','b','c']

for i in fds:
  attribute_name = f"{i}"
  setattr(obj, attribute_name, [f"{i}"])
  print(obj.i)

I know that obj.i is gonna get me an error.

What I want is something similar to:

print(obj.a)
print(obj.b)
print(obj.c)

which gives me:

['a']
['b']
['c']

Is there a way to make it in an iterative way? That's why my first attempt was to make something like obj.i inside the loop.

I want to do this to check the data inside the list is what I was expecting or not. Probably instead of print is better to make a list with obj.a, obj.b and obj.c for that but I have the same problem, to append the data in an iterative way.

But if you end up doing that rather ugly kind of things, you should probably rather use a dict... — Thierry Lathuille
– Thierry Lathuille, Commented Aug 28 at 20:15
A class which has an internal dict property bag for key-values is most likely the cleanest way to implement whatever you are trying to do. — Xavier Pedraza
– Xavier Pedraza, Commented Aug 28 at 20:19

Richard · Accepted Answer · 2025-08-28 20:28:02Z

1

You can access an object's attributes as a dictionary with obj.__dict__

List attributes of an object

obj = MyClass()

fds=['a','b','c']

for i in fds:
  attribute_name = f"{i}"
  setattr(obj, attribute_name, [f"{i}"])
  print(obj.__dict__[attribute_name])

edited Aug 28 at 20:28

answered Aug 28 at 20:24

Richard

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