Making copies

class Person:
    def __init__(self, name, eyecolor, age):
        self.name = name
        self.eyecolor = eyecolor
        self.age = age

class Name:
    def __init__(self, firstname, lastname):
        self.firstname = firstname
        self.lastname = lastname

myPerson1 = Person(Name("David", "Joyner"), "brown", 30)
#Instead of referencing to myPerson1 at the same object (ie. myPerson2 = myPerson1), we can copy each attributes of myPerson1 so that we can modify the attributes separately.
#Here we are constructing a new instance of a person and pass those immutable data types as arguments and letting myPerson2 has its own attributes.
#myPerson2 = Person(myPerson1.name, myPerson1.eyecolor, myPerson1.age)  # --> but this will also modify myPerson1's name because we have passed myPerson1.name as the argument of mutable type.

#Therefore in order to copy another object (myPerson1) at an immutable level, we have to create a new instance of name for both firstname and lastname
myPerson2 = Person(Name(myPerson1.name.firstname, myPerson1.name.lastname),
                   myPerson1.eyecolor, myPerson1.age) #this way is better as it only myPerson2.firstname will modified now
myPerson2.eyecolor = "blue"
print(myPerson1.eyecolor)  #remains as brown
print(myPerson2.eyecolor)  #will now be modified to blue
myPerson2.name.firstname = "Vrushali"
print(myPerson1.name.firstname)  #should remain as David
print(myPerson2.name.firstname)  #will be modified as Vrushali