How many instance variables will exist after you run the following code?

class Person(): def __init__(self, weight = 160): self.weight = weight next_person = Person(150) next_person.foot_size = 10 next_person.eyes = "green" 

In Python you can derive a class from two parent classes but not from three parent classes. true or false

What is needed to crea te a new object in Python?

a.define__str__() method

b.define a constructor method

c.both constructor and __str__() methods

d.None of the above.

o define "-" operator for a new class, one needs to:

a.define __sub__() method

b.It is impossible to define such an operator for user-defined classes.