python fun

fun.py

import tkinter as tk
from time import sleep

root = tk.Tk()
canvas = tk.Canvas(root, height=800, width=800, bg="black")
canvas.pack (anchor=tk.CENTER, expand=True)
FPS=80
x_left,  y_left  = 50,  50
x_right, y_right = 730, 50
# left_vy = -7
right_vy = -7
pressed = set()

root.focus_set()  # ensure we receive key events

def on_press(e):
	pressed.add(e.keysym.lower())
def on_release(e):
	pressed.discard(e.keysym.lower())

root.bind("<KeyPress>", on_press)
root.bind("<KeyRelease>", on_release)

def tick():
	global y_left, y_right, right_vy

	dy_left = 0
	if "a" in pressed:
		dy_left -= SPEED
	if "d" in pressed:
		dy_left += SPEED

	y_left += dy_left
	y_left = max(0, min(CANVAS_H - PADDLE_H, y_left))

	# Right paddle auto-bounce
	y_right += right_vy
	if y_right <= 0 or y_right >= CANVAS_H - PADDLE_H:
		right_vy = -right_vy
		y_right += right_vy  # nudge back inside bounds

	# Render
	canvas.delete("all")
	canvas.create_rectangle(
		x_left, y_left, x_left + PADDLE_W, y_left + PADDLE_H, fill="white", outline=""
	)
	canvas.create_rectangle(
		x_right, y_right, x_right + PADDLE_W, y_right + PADDLE_H, fill="white", outline=""
	)

	# Schedule next frame
	root.after(DT_MS, tick)

# Start loop
tick()
root.mainloop()