Python Addition Program

[thedotmaster]

Instead of trying to do it using less than and greater than operands, you can make it much easier by using
while total != 100:

That wouldn't work if the total was to exceed 100. For example, if the total was 98 and the user inputted 5.

[htomeht]

I love python so I thought I would add a few points..

* You never have to set add = 0 since you dont do any checks against it before setting it later in the code
* You shouldnt add and then remove from total if it was to high. Try to only set a value if it will come into the range you want it to be after the setting.
* It is possible to use \n in strings to add newlines. This is more of a style thing, many people prefer the explicit prints

Here is a quick piece of code of how I would write it.
Of course I dont have all your prints in this simplified version but it shows how to bring together the logic.

Code: Select all

#! /bin/env python

total = 0
print "\nLets play a game!"
while total < 100:
    try:
        add = int(raw_input("\nTotal is %s, add another number: " % total))
        if total+add <= 100: total += add
        else: print "\nTotal must not be greater than 100"
    except ValueError: pass
print "\nYou won! Total is %s" % total


-- Wed Aug 05, 2009 1:22 am --

Also it might be worth noting that I totally forgot about negative integers. You can pass -1000 to this program.

Code: Select all

if 0 < total+add <= 100: total += add # This should fix it


[sanddbox]

I would recommend you don't allow it to go over 100...this could be implemented easily doing this.

ill write this in pseudo-code btw. (english basically)
while completed != 1
{
if a < (100-total)

print "good job!"

*add a to total*

if a > (100-total)

print "screw you stupid asshole, your number puts the value over 100"

if total == 100

print "the total has reached 100. Asshole."!

completed = 1
}

That way you cannot go over 100.

[thedotmaster]

I'd do it like this:

Code: Select all

try:
  total = 0
  while 1:
    try:
      a = int(raw_input("Enter number: "))
      assert total+a <= 100 and total+a >= 0
    except ValueError:
      print "Error - should be a number"
      # Add exit(1) in here to end if a duff value is given.
      a = 0
    except AssertionError:
      print "Over 100, final value was: %i" % total
      exit(1)
    else:
      total += a
except KeyboardInterrupt:
  print "\rProgram ended. Final value was: %i" % total

For a little program all that exception handling is pretty unnecessary, but it's good to know. That should