Complete inheritance exercise

Author: zohrehKazemianpour

exercises-sprint5/inheritance.py

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+""" ✍️exercise
+Play computer with this code. Predict what you expect each line will do. Then run the code and check your predictions. (If any lines cause errors, you may need to comment them out to check later lines).
+"""
+
+# PREDICTION: This defines a base class called Parent
+class Parent:
+     # PREDICTION: Constructor that sets first_name and last_name attributes
+    def __init__(self, first_name: str, last_name: str):
+        self.first_name = first_name
+        self.last_name = last_name
+
+# PREDICTION: Method that returns full name as "first last"
+    def get_name(self) -> str:
+        return f"{self.first_name} {self.last_name}"
+    
+
+# PREDICTION: Child class inherits everything from Parent class
+class Child(Parent):
+ # PREDICTION: Constructor calls parent's constructor then adds new attribute    
+    def __init__(self, first_name: str, last_name: str):
+        super().__init__(first_name, last_name) # PREDICTION: Calls Parent.__init__
+        self.previous_last_names = []  # PREDICTION: Creates empty list for this instance
+
+# PREDICTION: Method to change last name and track previous names
+    def change_last_name(self, last_name) -> None:
+        self.previous_last_names.append(self.last_name)
+        self.last_name = last_name
+
+# PREDICTION: Method that returns full name with maiden name note if changed
+    def get_full_name(self) -> str:
+        suffix = ""
+        if len(self.previous_last_names) > 0:
+            suffix = f" (née {self.previous_last_names[0]})"
+        return f"{self.first_name} {self.last_name}{suffix}"
+    
+
+# PREDICTION: Creates Child instance with names "Elizaveta" "Alekseeva"
+person1 = Child("Elizaveta", "Alekseeva")
+# PREDICTION: Prints "Elizaveta Alekseeva" (calls inherited get_name() from Parent)
+print(person1.get_name())
+# PREDICTION: Prints "Elizaveta Alekseeva" (no suffix since no name change yet)
+print(person1.get_full_name())
+# PREDICTION: Changes last name to "Tyurina", adds "Alekseeva" to previous_last_names
+person1.change_last_name("Tyurina")
+# PREDICTION: Prints "Elizaveta Tyurina" (updated last name)
+print(person1.get_name())
+# PREDICTION: Prints "Elizaveta Tyurina (née Alekseeva)" (shows maiden name)
+print(person1.get_full_name())
+
+
+# PREDICTION: Creates Parent instance (NOT Child) with same names
+person2 = Parent("Elizaveta", "Alekseeva")
+# PREDICTION: Prints "Elizaveta Alekseeva" (Parent has get_name() method)
+print(person2.get_name())
+# PREDICTION:  ERROR! Parent class doesn't have get_full_name() method
+print(person2.get_full_name())
+# PREDICTION:  ERROR! Parent class doesn't have change_last_name() method
+person2.change_last_name("Tyurina")
+# PREDICTION: Won't reach this line due to previous error
+print(person2.get_name())
+# PREDICTION: Won't reach this line due to previous error
+print(person2.get_full_name())