Formatting class instance return (list)

Question

I'm having difficulty with formatting when an instance that is a list is printed. If I defined a class and created a class instance as the following:

class Building():
    def __init__(self):
        self.rooms = []

    def add_room(self, rm_num: str, occupied: str, type: str, size: str):
        self.rooms.append([rm_num, occupied, type, size])

>>>b = Building()
>>>b.add_room('302', 'Y', 'single', 'small')
>>>b.add_room('105', 'Y', 'single', 'large')

The goal right now is for the output when the instance is printed to look like the following: (each item in the list instance on a separate line**)

>>>print(b)
302, Y, single, small
105, Y, single, large

How could I go about formatting through def __repr__(self)?

Thanks so much in advance!

Answer 1

See this tutorial for repr. Also, look into list comprehension in python.

def __repr__(self):
    return "\n".join(', '.join(x) for x in self.rooms)