[nolls]

Thanks, got past that problem!

Now I did a test run everything was fine, except that it doesn't go back and re-run it! And I remembered I had to create a loop. I vaguely remember the "while" loop and forget the other. Any suggestions?

print "Welcome to Nolls's Calculator 1.0"

print "1. addition"
print "2. subtraction"
print "3. multiplication"
print "4. division"
print "5. exit"

option = input("Which would you like to do? ")
if option == 1:
    a = input("First number ")
    print a
    b = input("Plus second number ")
    print b
    print a + b
elif option == 2:
    a = input("First number ")
    print a
    b = input("Minus second number ")
    print a - b
elif option == 3:
    a = input("First number ")
    print a
    b = input("Multiplied by second number ")
    print b
    print a * b
elif option == 4:
    a = input("First number ")
    print a
    b = input("Divided by second number ")
    print b
    print a / b
elif option == 5:
    print "Goodbye!"
    exit ()