def __init__(self):
    """A mutant is born with only 1 eye and 1 mouth"""
self.eyes = 1
self.mouth = 1
self.location = 'Montana'

def roll_to(self, location):
    """If they have limbs, running is less dangerous"""
if hasattr(self, 'limbs'):
    pass
Python — следует ли инициализировать все переменные-члены в __init__