[Python] Weird bug I cant figure how to fix [duplicate]

import pygame
from os.path import isfile, join
from sys import exit
from random import randint
pygame.init()

class GameTitle():
def __init__(self):
pass

class PlayButton(pygame.sprite.Sprite):
def __init__(self, x, y, groups):
super().__init__(groups)
self.image = pygame.image.load(join('images', 'Main Menu', 'play_button.png')).convert_alpha()
self.rect = self.image.get_frect(center = (x, y))

def animations(self):
self.mouse_pos = pygame.mouse.get_pos()
if self.rect.collidepoint(self.mouse_pos):
self.image = pygame.image.load(join('images', 'Main Menu', 'play_button_hover.png')).convert_alpha()
else:
self.image = pygame.image.load(join('images', 'Main Menu', 'play_button.png')).convert_alpha()

def input(self):
for event.type in pygame.event.get():
if event.type == pygame.MOUSEBUTTONDOWN:
if self.rect.collidepoint(self.mouse_pos):
Play()

def update(self):
self.animations()

class Player(pygame.sprite.Sprite):
def __init__(self, groups):
super().__init__(groups)
self.image = pygame.image.load(join('images', 'begin_pong_bar.png')).convert_alpha()
self.rect = self.image.get_frect(center = ((WINDOW_WIDTH / 6 - 50), (WINDOW_HEIGHT / 2 - 15)))
self.speed = (WINDOW_HEIGHT / 0.64)

def Input(self):
# Inputs
keys = pygame.key.get_pressed()
if keys[pygame.K_UP]: self.rect.y += -0.5 * self.speed * dt
if keys[pygame.K_DOWN]: self.rect.y += 0.5 * self.speed * dt
if keys[pygame.K_w]: self.rect.y += -0.5 * self.speed * dt
if keys[pygame.K_s]: self.rect.y += 0.5 * self.speed * dt

def Collisions(self):
# Border Collisions
if self.rect.collidepoint(self.rect.x, 5): self.rect.y = 5
if self.rect.collidepoint(self.rect.x, 597): self.rect.y = 492

def update(self):
self.Collisions()
self.Input()

def Play():
pygame.display.set_caption('Offset: In Game')

while True:

for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
exit()

win.fill('black')

topline = pygame.draw.line(win, 'darkgray', (0,0), (WINDOW_WIDTH, 0), 8)
bottomline = pygame.draw.line(win, 'darkgray', (0,WINDOW_HEIGHT), (WINDOW_WIDTH, WINDOW_HEIGHT), 8)
leftline = pygame.draw.line(win, 'darkgray', (0,0), (0, WINDOW_HEIGHT), 8)
rightline = pygame.draw.line(win, 'darkgray', (WINDOW_WIDTH, 0), (WINDOW_WIDTH, WINDOW_HEIGHT), 8)

all_sprites.update()
pygame.display.flip()

def MainMenu():
while True:
win.fill('lightgreen')

for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
exit()
if event.type == pygame.MOUSEBUTTONDOWN:
if player.rect.collidepoint(playbutton.mouse_pos):
Play()


mainmenu_sprites.update()
pygame.display.flip()

# General Setup
WINDOW_WIDTH, WINDOW_HEIGHT = 960, 600
game_icon = pygame.image.load(join('images', 'game_icon.png'))
win = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
pygame.display.set_caption('Offset: Main Menu')
pygame.display.set_icon(game_icon)
clock = pygame.time.Clock()

# Imports
all_sprites = pygame.sprite.Group()
player = Player(all_sprites)
all_sprites.add(player)
mainmenu_sprites = pygame.sprite.Group()
playbutton = PlayButton(WINDOW_WIDTH / 2, WINDOW_HEIGHT * 7/20, mainmenu_sprites)
mainmenu_sprites.add(playbutton)

while True:
win.fill('lightgreen')

mainmenu_sprites.draw(win)
# Delta Time
dt = clock.tick() / 1000
# Event Loop
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
exit()


MainMenu()

pygame.display.flip()



There should be a play button appearing but there, well is not.

i expected play button to appear, and if i click on play it switched the screen.fill to the game. as of the play def.

Continue reading...