def add(F, S):    
   return F + S   
  
def subtract(F, S):   
   return F - S 

def multiplication(F, S):   
   return F * S

def division(F, S):   
   return F / S 


print ("Please select the action.")    
print ("a. Addition")    
print ("b. Subtraction") 
print ("c. Multiplication")  
print ("d. Division")    



choice = input("What action:")    
    
number1= int (input (" What is the First number?: "))    
number2= int (input ("What is the Second number?: "))    
    
if choice == 'a':    
   print (number1, " + ", number2, " = ", add(number1, number2))    
    
elif choice == 'b':    
   print (number1, " - ", number2, " = ", subtract(number1, number2))
          
if choice == 'c':    
   print (number1, " * ", number2, " = ", multiplication(number1, number2))    
     
elif choice == 'd':    
   print (number1, "/ ", number2, " = ", division(number1, number2))

else:
  print("Action Finished")
Please select the action.
a. Addition
b. Subtraction
c. Multiplication
d. Division
4  +  4  =  8
Action Finished