在Python Turtle中绘制一个正方形
在Python Turtle中绘制一个正方形
提问于 2017-09-07 01:52:46
我正在学习Python的教程，但我无法打开屏幕来绘图。我没有得到一个错误，它只是表明程序已经结束运行。也许我漏掉了什么，有人能指出一下吗？
import turtle #acutally called turtle to draw a turtle beautiful also used
to draw other stuff
# to draw a square or eventually a turtle you need to do this things below
# to draw a square you want to : move forward,turn right,move forward,turn
right,move forward turn right
def draw_square(): #draw square for turtles
window = turtle.Screen() #this is the background where the turtle will
move
window.bgcolor("red") # the color of the screen
brad = turtle.Turtle() #this is how to start drawing like time.sleep you use turtle.Turtle
brad.forward(100)#move turtle forward takes in a number which is the distance to move forward
brad.forward(90)# moves right
brad.forward(100)
brad.forward(90)
brad.forward(100)
brad.forward(90)
brad.forward(100)
brad.forward(90)
window.exitonclick() #click the screen to close it
draw_square()回答 2
Stack Overflow用户
发布于 2020-05-10 13:50:40
要使海龟屏幕在代码执行后保持不动，必须使用turtle.done()或window.exitonclick()。
我已经为此创建了一个样例Python程序，只需看一下：
import turtle
me = turtle.Turtle() # creating the turtle object
def drawSquare(size):
for i in range(4):
me.fd(size)
me.rt(90)
me.pencolor('white') # making the pencolor white, so that it is visible in black screen
window = turtle.Screen()
window.bgcolor('black') # creating black background
me.penup()
# repositioning the turtle
me.bk(10)
me.rt(90)
me.bk(50)
# putting the pen down to start working
me.pendown()
# calling the draw square method with the edge length for the square
drawSquare(100)
# window.exitonclick() # exits the screen when clicked
turtle.done() # you have to cross the window to close itStack Overflow用户
发布于 2018-06-18 05:09:29
import turtle
def draw_square():
window = turtle.Screen()
window.bgcolor("green")
bob = turtle.Turtle()
bob.forward(100)
bob.right(90)
bob.forward(100)
bob.right(90)
bob.forward(100)
bob.right(90)
bob.forward(100)
bob.right(90)
window.exitonclick()
draw_square()页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/46081500
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