Understanding Python Functions

Understanding Python Functions

I have this Python code :

import random
class Dice:
    def Roll(self):
     first=random.randint(1,6)
     second=random.randint(1,6)
     return  first,second


dice=Dice()
print(dice.Roll())

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I would like to know the meaning of Self in : the function Roll. is it a parameter that needs an argument passed to it ? if so what argument was it passed to it in the above example?

I also want to understand the Return keyword.  in the example above the result from variables first and second will be returned but where does it get stored ?
it should be store in the function Roll, but where ? in the Self parameter ?

Any clarification will be very much appreciated.


Thank you