Python Nub

[The Sorrow]

I wanted to know how to edit this code to make it loop back to the beginning. Its just a number comparison.

num1 = 0
num2 = 0

print "Hello, im a number comparison program "

num1 = input("Enter a number ")
num2 = input("Enter another number ")

if (num1 > num2):
    print "Your first number is greater"

if (num2 > num1):
    print "Your second number is greater"

if (num1 == num2):
    print "Your numbers are equal"

here is how i want to finish it in pseudo-code:

 "Enter another? (Yes or No) > "

if yes loop to beginning
if no print "Goodbye :)"

any help?

Edited October 7, 2010 by The Sorrow

[Sparda]

while(keep_going) {

if (user says no) {

keep_going = false;

}

}

[The Sorrow]

while(keep_going) {

if (user says no) {

keep_going = false;

}

}

its in python, :( should have specified

[Sparda]

http://www.tutorialspoint.com/python/python_while_loop.htm

[The Sorrow]

sweet, ill see if i can get it figured out ;)

[Mr-Protocol]

Yup, basic while loop. Pretty universal.

[The Sorrow]

Yea i figured it out.

num1 = 0
num2 = 0
menuOption = ""

print "Hello, I'm a number comparison program "
while (menuOption != "n"):
     num1 = input("Enter a number> ")
     num2 = input("Enter another number> ")

     if (num1 > num2):
          print "Your first number is greater"

     if (num2 > num1):
          print "Your second number is greater"

     if (num1 == num2):
          print "Your numbers are equal"

menuOption = raw_input("Enter another number? (y/n)> ")

Edited October 7, 2010 by The Sorrow

[Sparda]

menuOption = raw_input("Enter another number? (y/n)> ")

is never executed and thus, menuOption cannot be set to "n" by the user.

[The Sorrow]

menuOption = raw_input("Enter another number? (y/n)> ")

is never executed and thus, menuOption cannot be set to "n" by the user.

it prompts me if i want to enter another number....so it seems to work. Basically while menuOption is not equal to "n" it'll loop.

Edited October 7, 2010 by The Sorrow

[Sparda]

This is why python is fun (using whitespace as syntax)

num1 = 0
num2 = 0
menuOption = ""

print "Hello, I'm a number comparison program "
while (menuOption != "n"):
     num1 = input("Enter a number> ")
     num2 = input("Enter another number> ")

     if (num1 > num2):
          print "Your first number is greater"

     if (num2 > num1):
          print "Your second number is greater"

     if (num1 == num2):
          print "Your numbers are equal"

     menuOption = raw_input("Enter another number? (y/n)> ")

It needs to be in the while loop. Maybe it is in your editor but it failed to copy/paste correctly.

[The Sorrow]

oh got ya lol. yea, thats how the source is. im taking an intro programming class in college and was ahead so i thought id get more ahead. wowed my instructor and his TAs by using a list array to convert numbers to roman numerals :P

[SomeoneE1se]

This is why python is fun (using whitespace as syntax)

num1 = 0
num2 = 0
menuOption = ""

print "Hello, I'm a number comparison program "
while (menuOption != "n"):
     num1 = input("Enter a number> ")
     num2 = input("Enter another number> ")

     if (num1 > num2):
          print "Your first number is greater"

     if (num2 > num1):
          print "Your second number is greater"

     if (num1 == num2):
          print "Your numbers are equal"

     menuOption = raw_input("Enter another number? (y/n)> ")

It needs to be in the while loop. Maybe it is in your editor but it failed to copy/paste correctly.

while(1):
    #your code
    prompt for answer if done:
        break
exit(0)

remember to add error checking for the answer

Edited October 8, 2010 by SomeoneE1se

[The Sorrow]

so insert a break command? im not quite sure what your referring to.

[Sparda]

The break operator is a way of leaving a loop at any point in the loop. In this instance it will have the same effect as using a variable to control the loop condition.

[The Sorrow]

ok so its just good habbit to insert 'break' at the end of a loop

[The Sorrow]

sorry for the double post but this is that roman numeral converter i made today too.

list = ['I','II','III','IV','V','VI','VII','VIII','IX','X']
number = 0
menuOption = "" 

print "Hello, Im a roman numeral conversion program"

while (menuOption != "n"):
    number = input("Enter a number to be converted> ")
    if (number < 1):
        print "ERROR - Can't convert numbers less than or equal to zero"
    if (number > 10):
        print "ERROR - Can't convert numbers over 10"
    if (number <= 10 and number >= 1):
        print list[number - 1]

    menuOption = raw_input("Run again y/n > ")
if (menuOption == "n"):
    print "Goodbye :)"

Edited October 8, 2010 by The Sorrow

[SomeoneE1se]

#set vaules
list = ['I','II','III','IV','V','VI','VII','VIII','IX','X']
number = 0

#init
print "Hello, Im a roman numeral conversion program"

while (1):
    number = input("Enter a number to be converted> ")
    if (number < 1):
        print "ERROR - Can't convert numbers less than or equal to zero"
    if (number > 10):
        print "ERROR - Can't convert numbers over 10"
    if (number <= 10 and number >= 1):
        print list[number - 1]

    menuOption = raw_input("Run again y/n > ")
    if (menuOption == "n"):
    print "Goodbye :)"
    break
#end

also I would suggest 4 spaces in replacement of tabs when you're working with python.

[The Sorrow]

#set vaules
list = ['I','II','III','IV','V','VI','VII','VIII','IX','X']
number = 0
menuOption = ""

#init
print "Hello, Im a roman numeral conversion program"

while (1):
    number = input("Enter a number to be converted> ")
    if (number < 1):
        print "ERROR - Can't convert numbers less than or equal to zero"
    if (number > 10):
        print "ERROR - Can't convert numbers over 10"
    if (number <= 10 and number >= 1):
        print list[number - 1]

    menuOption = raw_input("Run again y/n > ")
    if (menuOption == "n"):
    print "Goodbye :)"
    break
#end

also I would suggest 4 spaces in replacement of tabs when you're working with python.

forgot to declare menuOption :P

[Sitwon]

ok so its just good habbit to insert 'break' at the end of a loop

Actually it would be a bad habit to use a break like that. Use of break is generally discouraged. Essentially, a break is very similar to the infamous 'goto' and should be avoided unless necessary.

[SomeoneE1se]

Actually it would be a bad habit to use a break like that. Use of break is generally discouraged. Essentially, a break is very similar to the infamous 'goto' and should be avoided unless necessary.

in this case you'd be right, but if theres a complicated check required a function+break would be better

code should be easy to read, remember that and you'll do fine

Edited October 9, 2010 by SomeoneE1se

[The Sorrow]

Thanks for the clarification guys :)