python - 让 turtle 从墙上弹起来

Question

我正在为某人制作一个程序，这样他们就可以锻炼他们的眼睛，我正在使用 turtle ，所以它会随机移动。我希望 turtle 从墙上弹开，这样它就不会从侧面消失，再也不会被看到!我看过:TurtleGraphics Python: Bouncing turtle off the walls?并使用了 jnylen 的一些代码，所以一些功劳归于他!不管怎样，这是我的旧的、糟糕的代码(仅供引用):

from random import *
from turtle import *
penup() # Get rid of those lines it leaves behind!
def main():
    while True: # I want this to be infinite
        a = randint(1,600)
        print a
        b = randint(1,359)
        print b
        c = randint(1,600)
        print c
        d = randint(1,359)
        print d #Checking my randoms
        forward(a)
        edge() # Keep calling edge, so it will bounce on the edge.
        left(b)
        edge() # Keep calling edge, so it will bounce on the edge.
        forward(c)
        edge() # Keep calling edge, so it will bounce on the edge.
        right(d)
        edge() # Keep calling edge, so it will bounce on the edge.

def edge():
    x, y = position()
    top = window_height()/2
    bottom = -top
    right = window_width()/2
    left = -right
    if (x <= left and 90 <= heading() <= 270) or (right <= x and not 90 <= heading() <= 270):
        f = 178 * h
        left(f)
        main()
    elif (y <= bottom and heading() >= 180) or (top <= y and heading <= 180):
        f = -2 * heading()
        left(f)
        main()
    else:
        main()
main()

但是，当我运行它时，我得到输出:

189
199
553
152
26
175
597
263
119
201
582
329
231
267
344
28

Traceback (most recent call last):
  File "C:/Users/George/Desktop/Eyes.py", line 39, in <module>
    main()
  File "C:/Users/George/Desktop/Eyes.py", line 15, in main
    edge()
  File "C:/Users/George/Desktop/Eyes.py", line 38, in edge
    main()
  File "C:/Users/George/Desktop/Eyes.py", line 15, in main
    edge()
  File "C:/Users/George/Desktop/Eyes.py", line 38, in edge
    main()
  File "C:/Users/George/Desktop/Eyes.py", line 15, in main
    edge()
  File "C:/Users/George/Desktop/Eyes.py", line 38, in edge
    main()
  File "C:/Users/George/Desktop/Eyes.py", line 15, in main
    edge()
  File "C:/Users/George/Desktop/Eyes.py", line 31, in edge
    left(f)
TypeError: 'int' object is not callable

请问有人可以帮我解决这个问题吗？我尝试将 f 设置为 float、string 和 int，但没有任何效果!这可能是非常明显的事情，所以如果是的话，抱歉。

这是我的新代码，希望是正确的:

from random import *
from turtle import *
penup() # Get rid of those lines it leaves behind!
def main():
    while True: # I want this to be infinite
        a = randint(1,600)
        print a
        b = randint(1,359)
        print b
        c = randint(1,600)
        print c
        d = randint(1,359)
        print d #Checking my randoms
        forward(a)

        x, y = position()
        top = window_height()/2
        bottom = -top
        right = window_width()/2
        l = -right

        if (x <= l and 90 <= heading() <= 270) or (right <= x and not 90 <= heading() <= 270):
            f = 178 * heading()
            left(f)
            print "1"
        elif (y <= bottom and heading() >= 180) or (top <= y and heading <= 180):
            f = -2 * heading()
            left(f)
            print "2"
        else:
            print "3"

        left(b)

        x, y = position()
        top = window_height()/2
        bottom = -top
        right = window_width()/2
        l = -right
        if (x <= l and 90 <= heading() <= 270) or (right <= x and not 90 <= heading() <= 270):
            f = 178 * heading()
            left(f)
            print "1"
        elif (y <= bottom and heading() >= 180) or (top <= y and heading <= 180):
            f = -2 * heading()
            left(f)
            print "2"
        else:
            print "3"

        forward(c)

        x, y = position()
        top = window_height()/2
        bottom = -top
        right = window_width()/2
        l = -right
        if (x <= l and 90 <= heading() <= 270) or (right <= x and not 90 <= heading() <= 270):
            f = 178 * heading()
            left(f)
            print "1"
        elif (y <= bottom and heading() >= 180) or (top <= y and heading <= 180):
            f = -2 * heading()
            left(f)
            print "2"
        else:
            print "3"


        right(d)

        x, y = position()
        top = window_height()/2
        bottom = -top
        right = window_width()/2
        l = -right
        if (x <= l and 90 <= heading() <= 270) or (right <= x and not 90 <= heading() <= 270):
            f = 178 * heading()
            left(f)
            print "1"
        elif (y <= bottom and heading() >= 180) or (top <= y and heading <= 180):
            f = -2 * heading()
            left(f)
            print "2"
        else:
            print "3"


main()

Answer 1

您将 left 命令覆盖为 int 值:

left = -right

所以当你尝试转动 turtle 时

left(f)

您尝试调用 int 对象，只需重命名您的局部变量 left