[pyGame] How do i change text with keyboard ?...

[JamieVanCadsand]

Hey Programmers, Game Developers and Software Creators...

I try to make tekst changeble wenether you press an key... but it don't works...

This is my script:

import pygame
import sys
 
pygame.init()
 
WHITE = (255, 255, 255)
RED = (0, 255, 0)
BLACK = (0, 0, 0)
 
size = (640, 480)
screen = pygame.display.set_mode(size)
 
pygame.display.set_caption("JCads Develop")
 
 
done = False
clock = pygame.time.Clock()
   
while not done:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done = True
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_r:
                pygame.string = "JamieVanCadsand"
            elif event.key == pygame.K_g:
                pygame.string = "VinnieOrgers"
            elif event.key == pygame.K_b:
                pygame.string = "LiesbethVDJagt"
            elif event.key == pygame.K_ESCAPE:
                done = True

    
    screen.fill(WHITE)
    pygame.draw.line(screen, RED, [0, 0], [100, 100], 5)


    font = pygame.font.SysFont('Calibri', 25, True, False)
    text = font.render(string, True, BLACK)
    screen.blit(text, [250, 250])
    pygame.display.flip()
 
    clock.tick(60)
pygame.quit()
sys.exit()

Can anyone help me to give my an example code, about how i can make tekst changible wenether my player
or program user press an key ?... Thanks for help,

Jamie...