Patch 1

abstract.py

@@ -0,0 +1,25 @@
+#amrutha_varshini
+from abc import ABC,abstractmethod
+class new(ABC):
+    def display(self):
+        print("example of abstract class and methods")
+    @abstractmethod
+    def calculate(self,x):
+        pass
+
+class sub1(new):
+    def calculate(self,x):
+        print("square value is:",x*x)
+
+class sub2(new):
+    def calculate(self,x):
+        print("square root value is:",x**0.5)
+
+s1=sub1()
+s1.calculate(16)
+s1.display()
+
+s2=sub2()
+s2.calculate(2564)
+s2.display()
+

bank.py

@@ -0,0 +1,25 @@
+class account:
+    def  __init__(self,initial_balance):
+        self.balance=initial_balance
+
+    def deposit(self,amount):
+        self.balance=self.balance+amount
+        return self.balance
+    def withdraw(self,amount):
+        if(self.balance-amount < 0):
+            return "cannott be withdrawed requested amount"
+        else:
+            self.balance=self.balance-amount
+            return self.balance
+class Bank:
+    def display(self):
+        initial_balance=int(input("Enter balance:"))
+        a1=account(initial_balance)
+        amount=int(input("Amount to be withdrawn:"))
+        print("remaining balance:",a1.withdraw(amount))
+        amount=int(input("amount to be deposited:"))
+        print("total amount present:",a1.deposit(amount))
+
+b1=Bank()
+b1.display()
+

inherit.py

@@ -0,0 +1,15 @@
+class square:
+    def __init__(self,x):
+        self.x=x
+    def area(self):
+        print("area of square is:",self.x*self.x)
+class rectangle(square):
+    def __init__(self,x,y):
+        super(). __init__(x)
+        self.y=y
+    def area(self):
+        super().area()
+        print("area of rectangle is",self.x*self.y)
+
+r=rectangle(10,5)
+r.area()