我不能用乌龟模块在 python 中制作桨

Question

I cant find the problem, i have looked through the code several times.( i am a beginner)It doesnt make a paddle.

import turtle 

wn = turtle.Screen()
wn.title("pong by ChunkyChungus")
wn.bgcolor("black")
wn.setup(width=800, height=600)
wn.tracer(0)

paddle_a = turtle.Turtle()
paddle_a.speed(0)
paddle_a.shape("square")
paddle_a.color("white")
paddle_a.shapesize(stretch_wid=5, stretch_len=1)
paddle_a.penup()
paddle_a.goto(-350, 0,)


wn.exitonclick()

Please help me with this?

Answer 1

It looks like 'wn.tracer(0)' is what was blocking the turtle shape. The following code works for me. Notice that I've commented out 'wn.tracer(0)'.

import turtle 

wn = turtle.Screen()
wn.title("pong by ChunkyChungus")
wn.bgcolor("black")
wn.setup(width=800, height=600)
# wn.tracer(0)

paddle_a = turtle.Turtle()
paddle_a.speed(0)
paddle_a.shape("square")
paddle_a.color("white")
paddle_a.shapesize(stretch_wid=1, stretch_len=5)
paddle_a.penup()
paddle_a.goto(-350, 0,)

wn.exitonclick()