Real Time Typing In Pygame

I am trying to write a small piggybank program. I already have a window with some background and text but I need to add a functionality for the user to let him add money to the pig

Solution 1:

Here is a short example:

#creates a newstring, that will store the character you have written
number_str = "" 

#create a new Font object that is used to render the stringinto a Surface object
font_renderer = pygame.font.Font("monospace", 15) 

whileTrue:
    screen.fill((0,0,0)) # fill the whole screen with a black color
    # create a new Surface objectfrom a string, where the textis white.
    rendered_number = font_renderer.render(number_str, True, (255,255,255))

    #draws the created Surface onto the screen at position 100,100
    screen.blit(rendered_number, (100, 100))
    # updates the screen to show changes
    pygame.display.flip()

    foreventin pygame.event.get():
        ifevent.type == pygame.KEYDOWN: 
            if pygame.KEY_0 < event.key < pygame.KEY_9: # checks the key pressed
                character = chr(event.key) #converts the number to a character
                number_str += str(character) #adds the number to the endof the string

Solution 2:

You might want to do something like what's explained in this tutorial:

"""Edit text with the keyboard."""
import pygame
from pygame.locals import *
import time
 
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GRAY = (200, 200, 200)

pygame.init()
screen = pygame.display.set_mode((640, 240))

text = 'this text is editable'
font = pygame.font.SysFont(None, 48)
img = font.render(text, True, RED)

rect = img.get_rect()
rect.topleft = (20, 20)
cursor = Rect(rect.topright, (3, rect.height))

running = True
background = GRAY

while running:
    foreventin pygame.event.get():
        ifevent.type == QUIT:
            running = Falseifevent.type == KEYDOWN:
            ifevent.key == K_BACKSPACE:
                if len(text)>0:
                    text = text[:-1]
            else:
                text += event.unicode
            img = font.render(text, True, RED)
            rect.size=img.get_size()
            cursor.topleft = rect.topright
    
    screen.fill(background)
    screen.blit(img, rect)
    if time.time() % 1 > 0.5:
        pygame.draw.rect(screen, RED, cursor)
    pygame.display.update()

pygame.quit()