从Anaconda执行时如何在Python中结束乌龟循环？

Question

I have the below code: The loop does not end and the turtle keeps making circle.

    import turtle
    from turtle import Turtle
    from random import randint
    window=turtle.Screen()
    t = turtle.Turtle()
    #circle
    t.reset()
    while True:
        t.forward(2)
        t.right(1)
    if abs(pos()) < 1:
        break

I am executing this from Jupyter notebook. The same code works well if i execute from command prompt. Please advise!!

Thanks

Answer 1

The code doesn't work at the command prompt as written, despite you saying it does (twice.) The problem is the pos() call -- it throws NameError: name 'pos' is not defined . If you had also thrown in an from turtle import * among your multiple turtle imports, then it would run, but incorrectly as you would be moving your turtle t , but testing the default turtle's position. In this simplified form it should work:

import turtle

t = turtle.Turtle()

while True:
    t.forward(2)
    t.right(1)
    if abs(t.pos()) < 1:
        break

turtle.done()