如何改变乌龟的大小? [英] How to change size of turtle?

问题描述

每次我按键盘上的 x 时，我都试图将窗口中海龟的大小加倍.我尝试使用 .turtlesize(2,2,2)，但这是不对的.每次按下键时我都需要加倍，所以如果海龟大小是 (1,1,1)，它将变成 (2,2,2) 然后 (4,4,4) 等等，每次我按 x.

I am trying to double the size of the turtle in the window every time I press x on my keyboard. I tried using .turtlesize(2,2,2), but that's not right. I need to double every time the key is pressed so if the turtle size is (1,1,1), it will become (2,2,2) then (4,4,4) and so on each time I press x.

这是我目前所拥有的:

import turtle
turtle.setup(500,500)
wn = turtle.Screen()
wn.title("Commands")
wn.bgcolor("black")

tess = turtle.Turtle()
tess.shape("triangle")
tess.color("red")
tess.left(90)

def increaseSize():
    size = tess.turtlesize()
    increase = tuple([2 * num for num in size])
    tess.turtlesize(increase) #this is where the error occurs

wn.onkey(increaseSize, "x")
wn.listen()

推荐答案

更改这一行:

tess.turtlesize(increase)

改为:

tess.turtlesize(*increase)

turtlesize() 需要三个单独的值，但您传递的是三个值中的一个元组，因此我们需要将该元组分布在参数列表中.

turtlesize() wants three separate values but you were passing one tuple of three values so we need to spread that tuple across the argument list.

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