擅长:python、mysql、java
<p>如果您的意思是只允许<code>goto</code>进入正方形:</p>
<pre><code>import turtle
def goto_inside(x, y):
if 0 <= x <= 30 and 0 <= y <= 30:
turtle.goto(x, y)
turtle.onscreenclick(goto_inside)
# draw a square 30x30
for i in range(4):
turtle.forward(30)
turtle.left(90)
# turtle.mainloop()
</code></pre>