Why wont my score update

Question

 keepGoing = True
 while keepGoing:
     score+=1
     myfont = pygame.font.SysFont("monospace", 15)
     label = myfont.render(str(score), 1, (255,255,0))
     screen.blit(label, (100, 100))

This is my code but when I run the program it increases score properly - but when outputting it to the screen it doesn't take previous digit off, so when it prints 1 on the screen and then a 2 the 1 doesn't erase the 2 shows write on top of it. Because of this after a while I just get a yellow block on the screen.

I agree with reopen, user added description of the exact problem. — JasonMArcher, Feb 14 '14 at 00:06
The question was closed because people thought you were unclear. Your edit automatically started a reopen vote and we felt that you had added enough detail. :) — JasonMArcher, Feb 14 '14 at 03:59
So now that it is open when will I get an answer to my question? — user2045015, Feb 14 '14 at 16:02

score 1 · Answer 1 · answered Feb 13 '14 at 02:37

You're getting the error

NameError: name 'score' is not defined

because you're trying to update a variable that hasn't yet been defined. Even though the += contains an equal sign, you still need to define score before using +=

keepGoing = True
score = 0

while keepGoing:
    score += 1

score 0 · Answer 2 · answered Feb 13 '14 at 02:09

0

you should define score out while, like

keepGoing = True
score = 0

then it works.

answered Feb 13 '14 at 02:09

Fortune Zhang

41
3

score 0 · Answer 3 · edited May 23 '17 at 12:20

0

I don't know python, but based on the symptoms my guess would be that you have to clear the screen before you write something new. This question might be the way to do that.

How to get rid of pygame surfaces?

edited May 23 '17 at 12:20

Community

1
1

answered Feb 14 '14 at 21:52

JasonMArcher

14,195
22
56
52

Why wont my score update

3 Answers3