How to avoid overlapping text on top of each other in pygame?

Question

Python

I am writing a game in pygame. Faced with the fact that you need to display the speed of the target in the status bar (the speed increases with hitting the target). Wrote like this:

pygame.font.init()
speed_font = pygame.font.Font('freesansbold.ttf', 24)
info_string.blit(speed_font.render(u"Скорость: "+ str(zet.speed), True, (0, 255, 0)), (10, 5))

It turns out here such kotovasiya:

Help! How to avoid overlapping text on top of each other?

Answer 1

I suspect you don't clear the screen before drawing, so you're left with the picture from the last frame when you update the speed value. You need to fill the entire screen with a solid color at the beginning of the drawing method, then nothing will overlap.