One more python question!

[Nathan4102]

Ok, last question of the night, I promise

So I've got the code below, running it in Wing IDE (Did the same thing in other IDE's) and for some reason, when I type Q, it doesn't quit my while loop! I define looping once at the top, and never set it to 0 again, yet my debugging print commands show that looping is being set to 0 again! Is there something about Python that I'm missing, or have I screwed up somewhere?

Thaaanks!
Nathan

Example Output:

code:

0 Choices: Addition - A Subtract - S Multiply - M Divide - D Quit - Q The operator I'd like to use is: Q Quit! 1 0 Choices: Addition - A Subtract - S Multiply - M Divide - D Quit - Q The operator I'd like to use is:

Program:

Python:

looping = 0 def choices():     print "Choices:"     print "Addition - A"     print "Subtract - S"     print "Multiply - M"     print "Divide - D"     print "Quit - Q"     operator = raw_input("The operator I'd like to use is: ")     if operator == "A":         num1 = raw_input("The first number I'd like to add is: ")         num2 = raw_input("The second number I'd like to add is: ")         print("The answer is",add(num1, num2))         print ""     if operator == "S":         num1 = raw_input("The first number I'd like to subtract is: ")         num2 = raw_input("The second number I'd like to subtract is: ")         print("The answer is",subtract(num1, num2))         print ""     if operator == "M":         num1 = raw_input("The first number I'd like to multiply is: ")         num2 = raw_input("The second number I'd like to multiply is: ")         print("The answer is",multiply(num1, num2))         print ""     if operator == "D":         num1 = raw_input("The first number I'd like to divide is: ")         num2 = raw_input("The second number I'd like to divide is: ")         print("The answer is",divide(num1, num2))         print ""     if operator == "Q":         looping = 1         print "Quit!" #DEBUG         print looping #DEBUG         print ""    #DEBUG def add(num1, num2):     return float(num1) + float(num2) def subtract(num1, num2):     return float(num1) - float(num2) def multiply(num1, num2):     return float(num1) * float(num2) def divide(num1, num2):     return float(num1) / float(num2) while looping == 0:     print looping     choices()

[Panphobia]

Try returning a value from the function choices and storing it in looping, that should work

something along the lines of

Python:

if operator == "Q":         return 1

and

Python:

looping = choices()

[nullptr]

Panphobia's suggestion is good, but if you want to keep your code structured the same way, add "global looping" to the start of your choices() function. You need this line because Python thinks you want to define a new variable local to your function -- it doesn't consider that you've already defined a variable called looping. Adding this line tells Python that you're talking about the global variable and not a local one.

[Nathan4102]

Thanks for explaining it Null, it makes sense now!

[Cancer Sol]

Just post more questions if you need any, I'm sure people will still gladly help you