python - Making text appear one character at a time [PyGame] -

i trying make dialog appear 1 character @ time (like in pokemon games , other similar).

i have searched on internet have not managed find helpful.

i aware of question asked this, didn't solve trying do. know can done because have seen games made python has been done.

import pygame, sys pygame.locals import *  window_width = 500 window_height = 500  pygame.init() displaysurf = pygame.display.set_mode((window_width, window_height))  black = (  0,   0,   0) white = (255, 255, 255)  def display_text_animation(string):     text = ''     in range(len(string)):         displaysurf.fill(white)         text += string[i]         text_surface = font.render(text, true, black)         text_rect = text_surface.get_rect()         text_rect.center = (window_width/2, window_height/2)         displaysurf.blit(text_surface, text_rect)         pygame.display.update()         pygame.time.wait(100)  def main():     while true:         event in pygame.event.get():             if event.type == quit:                 pygame.quit()                 sys.exit()  display_text_animation('hello world!') main() 

note: haven't used pygame before may not work.