My Text Input Fields class isn't working and I don't know what I am missing

Question

I am making the user interface of a game and I am trying to make text input fields but they don't work. They change colour when I click on them but I can't type into them.

import pygame

pygame.init()
gui_font = pygame.font.Font(None, 30)
screen = pygame.display.set_mode([1000, 600])


class InputBoxes:
    def __init__(self, pos, width, height, text=''):
        # Rect
        self.rect = pygame.Rect(pos, (width, height))
        self.rect_colour = '#C0C0C0'
        # Text
        self.text = text
        self.text_colour = '#000000'
        self.text_look = gui_font.render(text, True, self.text_colour)
        # Activate Field
        self.active = False

    def draw(self, screen):
        pygame.draw.rect(screen, self.rect_colour, self.rect)
        screen.blit(self.text_look, (0, 0))

    def handle_event(self, event):
        if event.type == pygame.MOUSEBUTTONDOWN:
            if self.rect.collidepoint(event.pos):
                self.rect_colour = '#E5E4E2'
            else:
                self.rect_colour = '#C0C0C0'
        for event in pygame.event.get():
            if event.type == pygame.KEYDOWN:
                if self.active:
                    if event.key == pygame.K_RETURN:
                        self.text = ''
                        print(self.text)
                    elif event.key == pygame.K_BACKSPACE:
                        self.text = self.text[:-1]
                    else:
                        self.text += event.unicode
                    # Re-render the text.
                    self.text_look = gui_font.render(self.text, True, self.text_colour)

    def update(self):
        width = max(200, self.text_look.get_width() + 10)
        self.rect.w = width


clock = pygame.time.Clock()
tf_name = InputBoxes((40, 73), 400, 30)
tf_gameRoomName = InputBoxes((40, 113), 400, 30)
input_boxes = [tf_name, tf_gameRoomName]

host = pygame.image.load("Host.png")

# Game Loop
done = False
while not done:
    for event in pygame.event.get():
        screen.blit(host, (0, 0))
        if event.type == pygame.QUIT:
            done = True
        for box in input_boxes:
            box.handle_event(event)
            box.draw(screen)
            box.update()
    pygame.display.flip()
    clock.tick(30)

I am probably missing a line of code but it isn't letting me type in the boxes, however they do light up and change colour when they are clicked.