# Author:  James Tam

# Version: November 12, 2024
# Learning concepts: understanding the need for self when inside the methods
# of a class.

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

   #Stylistic benefit of self.
   #Clarifying whose method is being called.
   def sayFriend(self,myFriend):
      print("Calling object's name is %s" %(self.name), end=",\t")
      print("name of %s's friend is %s" %(self.name,myFriend.name))

   def canSay(self):
      print("My name is %s" %(self.name))      

   #JT's hint for figuring this out, remember/review my scoping rules frome
   #the functional/decompostion section.
   #
   #When referring to an identifier:
   #1) Check for the creation of that idenifier in the local scope
   #2) If nothing local then check for the creation of the identifier globally.
   #Also keep in mind that methods are like functions in that they have local
   #memory that is hidden from other function/methods. In this case stacey and
   #jamie objects are created in start()
   def cannotSay(self):
      print("My name is %s" %(name))


def start():
   stacey = Person("Stacey")
   jamie = Person("Jamie")

   print("Part I")
   print("Calling %s's sayFriend() method" %(stacey.name))
   stacey.sayFriend(jamie)
   print("Calling %s's sayFriend() method" %(jamie.name))
   jamie.sayFriend(stacey)
   print("What would the output be? Why?")
   jamie.sayFriend(jamie)

   print("Part II")
   print()
   print("What will happen when this method is called? Why?")
   stacey.canSay()
   print()
   print("What will happen when this method is called? Why?")
   stacey.cannotSay()



start()