Added Program 30 in Python folder

Python/Program 30/README.md

@@ -0,0 +1,3 @@
+Program 30
+
+Program to make a simple calculator

Python/Program 30/program.py

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+# Program make a simple calculator
+
+# This function adds two numbers
+def add(x, y):
+    return x + y
+
+# This function subtracts two numbers
+def subtract(x, y):
+    return x - y
+
+# This function multiplies two numbers
+def multiply(x, y):
+    return x * y
+
+# This function divides two numbers
+def divide(x, y):
+    return x / y
+
+
+print("Select operation.")
+print("1.Add")
+print("2.Subtract")
+print("3.Multiply")
+print("4.Divide")
+
+while True:
+    # Take input from the user
+    choice = input("Enter choice(1/2/3/4): ")
+
+    # Check if choice is one of the four options
+    if choice in ('1', '2', '3', '4'):
+        num1 = float(input("Enter first number: "))
+        num2 = float(input("Enter second number: "))
+
+        if choice == '1':
+            print(num1, "+", num2, "=", add(num1, num2))
+
+        elif choice == '2':
+            print(num1, "-", num2, "=", subtract(num1, num2))
+
+        elif choice == '3':
+            print(num1, "*", num2, "=", multiply(num1, num2))
+
+        elif choice == '4':
+            print(num1, "/", num2, "=", divide(num1, num2))
+        break
+    else:
+        print("Invalid Input")

Python/README.md

@@ -32,4 +32,5 @@
 depending if the owner has a good credit or not.The price of the house is to be entered in the output |
 | Program-28 | Program to find out the GCD of any 2 given numbers |
 | Program-29 | Program  which will display the fibonacci series |
+| Program-30 | Program to make simple calculator |
 | Program-31 | Program to print Amstrong numbers |