如何在不使用 turtle.mainloop() 的情况下停止海龟冻结？

Question

当我要求用户输入海龟时，海龟页面冻结。我试过使用turtle.mainloop()，但这只会完全停止程序。有没有一种方法可以防止海龟页面冻结和程序停止？这是代码：import turtle  import time import randomdef quickshape(sides,size,thickness):    int(thickness)    turtle.width(thickness)    int(sides)    int(size)    angle = 360 / sides    int(angle)    for i in range(sides):        turtle.forward(size)        turtle.right(angle)def correct_position():    global x    global y    turtle.penup()    x = random.randint(-400,400)    y = random.randint(-250,250)    turtle.setpos(x, y)def move_alot():    global x    global y    turtle.penup()    x += random.randint(-100,100)    y += random.randint(-100,100)goes = 1print("My Doodle .co can draw you lots of shapes, depending on what you ask us!")print("To make a new set of patterns, close the pattern page... but only when it is drawing.")print()print("Before we start, do you want day or night mode?")while True:    mode = input("Mode: ")    if mode == 'day' or mode[0] == 'd':        print("Day mode it is.")        mode = 'day'        break    elif mode == 'night' or mode[0] == 'n':        print("Night mode it is.")        mode = 'night'        break    else:        print("Hmm... which mode?")titlename = input("Title: ")print("Configuring - takes a couple of seconds...")while True:    turtle.ht()    turtle.tracer(0)    turtle.screensize()    turtle.setup(width = 1.0, height = 1.0)    turtle.title(titlename + " [waiting for input - do not close]")    print("[ pattern",goes,"]")    while True:            try:                sides = int(input("Sides: "))            except ValueError:                print("[Input Error]")            else:                if sides > 35:                    print("Warning: >35 sides")                break    try:        turtle.penup()        x = random.randint(-200,200)        y = random.randint(-100,100)        turtle.setpos(x, y)

Answer 1

这是代码 - 但它对问题来说不太重要。

代码对问题总是很重要！

有足够的代码，而且问题相当模糊，我将尝试将您的代码翻译成 Python 的方法；-)，看看您的问题是否仍然存在：

from turtle import Screen, Turtle

from random import random, randint

def quickshape(sides, size, thickness):

    turtle.width(thickness)

    angle = 360 / sides

    for _ in range(sides):

        turtle.forward(size)

        turtle.right(angle)

def correct_position():

    global x, y

    x = randint(-400, 400)

    y = randint(-250, 250)

def move_alot():

    global x, y

    x += randint(-100, 100)

    y += randint(-100, 100)

print("My Doodle .co can draw you lots of shapes, depending on what you ask us!")

print()

print("Before we start, do you want day or night mode?")

goes = 1

while True:

    mode = input("Mode: ")

    if mode[0].lower() == 'd':

        print("Day mode it is.")

        mode = 'day'

        break

    if mode[0].lower() == 'n':

        print("Night mode it is.")

        mode = 'night'

        break

    print("Hmm... which mode?")

titlename = input("Title: ")

print("Configuring - takes a couple of seconds...")

screen = Screen()

screen.tracer(False)

screen.setup(width=1.0, height=1.0)

if mode == 'day':

    screen.bgcolor("white")

else:

    screen.bgcolor("black")

turtle = Turtle()

turtle.hideturtle()

while True:

    screen.title(titlename + " [Waiting for input - do not close]")

    pattern = "[Pattern {}]".format(goes)

    sides = screen.numinput(pattern, "Number of sides:", default=6, minval=3, maxval=35)

    if sides is None:

        break

    sides = int(sides)  # numinput() returns float

    numshapes = screen.numinput(pattern, "Number of shapes:", default=3, minval=1, maxval=50)

    if numshapes is None:

        break

    numshapes = int(numshapes)

    size = screen.numinput(pattern, "Length of each side:", default=25, minval=5, maxval=500)

    if size is None:

        break

    thickness = screen.numinput(pattern, "Thickness of pen:", default=1, minval=1, maxval=10)

    if thickness is None:

        break

    x = randint(-200, 200)

    y = randint(-100, 100)

    for part in range(1, numshapes + 1):

        turtle.penup()

        percentage = round(part/numshapes * 100, 2)

        screen.title(titlename + " [Drawing pattern. " + str(percentage) + "% complete.]")

        turtle.color(random(), random(), random())

        if randint(1, 45) == 1:

            move_alot()

        else:

            x += randint(-10, 5)

            y += randint(-5, 10)

        if not (-650 < x < 650 and -500 < y < 500):

            correct_position()

        turtle.setposition(x, y)

        turtle.pendown()

        quickshape(sides, size, thickness)

        screen.title(titlename + " [Finished drawing pattern " + str(goes) + "]")

        screen.update()

    goes += 1

screen.mainloop()

我遗漏了以下功能：

要制作一组新图案，请关闭图案页面......但仅限于绘制时。

因为一旦关闭窗口，就无法再次启动 Python turtle。