Answers for "pygame change text"

display text in pygame

def writeText(string, coordx, coordy, fontSize):
  	#set the font to write with
    font = pygame.font.Font('freesansbold.ttf', fontSize) 
    #(0, 0, 0) is black, to make black text
    text = font.render(string, True, (0, 0, 0))
    #get the rect of the text
    textRect = text.get_rect()
    #set the position of the text
    textRect.center = (coordx, coordy)
    #add text to window
	window.blit(text, textRect)
    #update window
	pygame.display.update()

how to remove text in pygame

screen = pygame.display.get_surface()
font = pygame.font.Font(None, 40)

font_surface = font.render("original", True, pygame.Color("white"));
screen.blit(surface, (0, 0))

screen.fill(pygame.Color("black")) # erases the entire screen surface
font_surface = font.render("edited", True, pygame.Color("white"));
screen.blit(surface, (0, 0))