Changing variables in multiple Python instances

Question

Is there anyway to set the variables of all instances of a class at the same time? I\'ve got a simplified example below:

class Object():
   def __init__(self         


        

Answer 1

You could use a class attribute:

class Object():
   speed = 0 

instance0=Object()
instance1=Object()
instance2=Object()
Object.speed=5
# instance0.speed == instance1.speed == instance2.speed == Object.speed == 5

However this would mean that all instances would always have the same speed.