import pygame
import sys

pygame.init()
display = pygame.display.set_mode((400,300))
background = pygame.Surface((400,300))

background.fill((0,0,0))

font = pygame.font.SysFont("Verdana", 20)
text_value = "Wewewewe"
text = font.render(text_value, True, (255,255,255))

while True:
    mouse_pos = pygame.mouse.get_pos()
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_BACKSPACE:
                text_value = text_value[:-1]
                text = font.render(text_value, True, (255,255,255))
            if event.key == pygame.K_RETURN:
                print(text_value)
        if event.type == pygame.TEXTINPUT:
            text_value += event.text
            text = font.render(text_value, True,(255,255,255))
    
    display.blit(background,(0,0))        
    display.blit(text, (100,150))
    pygame.display.update()