troubles

import pygame


pygame.init()
pygame.key.set_repeat(0, 0)
#------------------ resolution ------------------------
display_width = 640
display_height = 480

# ------------------- Colors ------------------------

white = (255, 255, 255)
black = (0, 0, 0)

# ------------------------ gamedisplay -------------------

gameDisplay = pygame.display.set_mode((display_width, display_height))
pygame.display.set_caption("Pong")

clock = pygame.time.Clock()
# ----------------- Rect variable -----------------
lead_x = 10
lead_y = display_height / 2

size_x = 20
size_y = 89

lead2_x = 1
lead2_y = 1

size2_x = display_width
size2_y = 0

block_x = 0
block_y = 478

size3_y = 0

lead_x_change = 0
lead_y_change = 0

# ------------------------ declare Rect -----------------

paddle = pygame.Rect(lead_x, lead_y, size_x, size_y)
block = pygame.Rect(lead2_x, lead2_y, size2_x, size2_y)
block2 = pygame.Rect(block_x, block_y, size2_x, size3_y)

#--------- detect collision ------------


def collide():
    while not paddle.colliderect(block) and not paddle.colliderect(block2):
        move()
        gameDisplay.fill(white)
        pygame.draw.rect(gameDisplay, black, paddle)
        pygame.draw.rect(gameDisplay, black, block)
        pygame.draw.rect(gameDisplay, black, block2)
        pygame.display.flip()


#---------- mouvement -----------------
def move():
    for event in pygame.event.get():
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                paddle.y -= 10
            if event.key == pygame.K_DOWN:
                paddle.y += 10


# --- MainLoop ---
launched = False
while not launched:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            launched = True

    move()
    collide()