Chapter folders renamed

Chapter03/abstraction/abstraction1.py

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+#abstraction1.py
+from abc import ABC, abstractmethod
+
+class Vehicle(ABC):
+    def hello(self):
+        print(f"Hello from abstract class")
+    @abstractmethod
+    def print_me(self):
+       pass
+
+class Car (Vehicle):
+    def __init__(self, color, seats):
+        self.i_color = color
+        self.i_seats = seats
+
+    """It is must to implemented this method"""
+    def print_me(self):
+        print( f"Car with color {self.i_color} and no of seats {self.i_seats}")
+
+if __name__ == "__main__":
+    #vehicle = Vehicle()
+    #vehicle.hello()
+    car = Car ("blue", 5)
+    car.print_me()
+    car.hello()