Created a new Calculator program using Python

Cal.py

@@ -0,0 +1,30 @@
+class Calculator:
+    def addition(self,x,y):
+        return x+y
+    def subtraction(self,x,y):
+        return x-y
+    def multiplication(self,x,y):
+        return x*y
+    def division(self,x,y):
+        if y==0:
+            return "not valid (Denominator is 0)"
+        return x/y
+c=Calculator()
+flag="Y"
+while flag=="Y" or flag=="y":
+    print("1)Addition\n2)Subtraction\n3)Multiplication\n4)Division\n")
+    choice=int(input("Enter the operator from above: "))
+    a,b=input("Enter two operands seperated by space : ").split()
+    a=int(a)
+    b=int(b)
+    if choice==1:
+        print(f"Sum is {c.addition(a,b)}")
+    elif choice==2:
+        print(f"Difference is {c.subtraction(a,b)}")
+    elif choice==3:
+        print(f"Product is {c.multiplication(a,b)}")
+    elif choice==4:
+        print(f"Division is {c.division(a,b)}")
+    else:
+        print("Please enter correct input")
+    flag=input("\nTo calculate again enter 'Y' or enter any key to exit : ")

Contributors.html

@@ -135,7 +135,8 @@ <h1 class="animated rubberBand delay-4s">Contributors</h1>
 <a class="box-item" href="https://github.com/senshiii"><span>Sayan Das</span></a>
 <a class="box-item" href="https://github.com/Shagufta08"><span>Shagufta Iqbal</span></a>
 <a class="box-item" href="https://github.com/ishgary"><span>Ishant Garg</span></a>
-<a class="box-item" href="https://github.com/<Sauvic016>"><span>Sauvic P Choudhury </span></a>	      
+<a class="box-item" href="https://github.com/<Sauvic016>"><span>Sauvic P Choudhury </span></a>
+<a class="box-item" href="https://github.com/<panchadeep>"><span>Panchadeep Mazumder</span></a>	      
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