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我的乌龟代码有一个错误,我似乎无法解决

[英]My turtle code has an error i cant seem to fix at the end of it

我正在尝试让它显示在乌龟上,但在第50行(倒数第二行)上一直显示“ shape_color未定义”

如果我将其更改为box_color

第14行,新月
t.circle(宽度,范围= 180,步长=无)
NameError:名称“ none”未定义

我不明白为什么其余的都不会出现此错误,请提供帮助。

import random
import turtle as t

def crescent(x, y, width, height, shape_color):
    t.fillcolor(shape_color)
    t.penup()
    t.goto(x, y)
    t.pendown()
    t.begin_fill()
    t.circle(width, extent=180, steps=none)
    t.endfill()
    t.penup()
    t.fillcolor("white")
    t.end_fill()
    t.penup()  
    t.fillcolor("white") 

def star(x, y, width, shape_color):
    t.fillcolor(shape_color)
    t.penup()
    t.goto(x, y)
    t.pendown()
    t.begin_fill()
    for s in range(5):
        t.forward(width)
        t.right(144)
    t.end_fill()
#--------------------------------------------------------------------

t.colormode(255)  
t.tracer(-1)


for n in range(10):
    x = random.randint(-200, 200)
    y = random.randint(-200, 200)

    r = random.randint(0, 255)
    g = random.randint(0, 255)
    b = random.randint(0, 255)
    box_color = (r, g, b)

    width  = random.randint(5, 50) 
    height = random.randint(5, 50) 

    crescent(x, y, width, height, box_color)
    star(x, y, width, height, shape_color)

我认为代码有两个检查点。 首先,将t.fillcolor(white)更改为t.fillcolor("white")

其次,将crescent(x, y, width, height, shape_colorcrescent(x, y, width, height, box_color 。因为您分配变量box_color而不是shape_color。这只是'crescent'上的参数

Yoy有很多错误:

--

里面for你执行star(x, y, width, height, shape_color)但你没有defive shape_color 您至少需要:

shape_color = box_color
star(x, y, width, height, shape_color)

--

t.circle您使用step=none但必须为NoneN较高。
但是您也可以跳过step=None ,它将默认使用step=None
参见文档: 乌龟-圆

t.circle(width, extent=180)

--

你忘了_在命令t.endfill() -它必须是t.end_fill()

--

函数star需要4个参数def star(x, y, width, shape_color):但是在for循环中,您需要使用5个参数star(x, y, width, height, shape_color)'. You have to remove执行它star(x, y, width, height, shape_color)'. You have to remove star(x, y, width, height, shape_color)'. You have to remove高度`

shape_color = box_color
star(x, y, width, shape_color)

完整代码:

import random
import turtle as t

def crescent(x, y, width, height, shape_color):
    t.fillcolor(shape_color)
    t.penup()
    t.goto(x, y)
    t.pendown()
    t.begin_fill()
    t.circle(width, extent=180)
    t.end_fill()
    t.penup()
    t.fillcolor("white")
    t.end_fill()
    t.penup()  
    t.fillcolor("white") 

def star(x, y, width, shape_color):
    t.fillcolor(shape_color)
    t.penup()
    t.goto(x, y)
    t.pendown()
    t.begin_fill()
    for s in range(5):
        t.forward(width)
        t.right(144)
    t.end_fill()
#--------------------------------------------------------------------

t.colormode(255)  
t.tracer(-1)


for n in range(10):
    x = random.randint(-200, 200)
    y = random.randint(-200, 200)

    r = random.randint(0, 255)
    g = random.randint(0, 255)
    b = random.randint(0, 255)
    box_color = (r, g, b)

    width  = random.randint(5, 50) 
    height = random.randint(5, 50) 

    crescent(x, y, width, height, box_color)
    star(x, y, width, shape_color)

重复放置多边形时,您可以考虑冲压而不是绘图 冲压时,我们为每个具有该形状的形状创建一个乌龟。 然后,根据需要移动,着色和调整乌龟的大小,然后对其进行标记。 这有两个优点:速度; 利用图形操作无法执行的图形操作(例如剪切 ):

from random import randint, random
import turtle

SHAPE_SIZE = 20

def crescent(width):
    turtle.begin_poly()
    turtle.circle(width, extent=180)
    turtle.end_poly()

    return turtle.get_poly()

def star(width):
    turtle.begin_poly()
    for _ in range(5):
        turtle.forward(width)
        turtle.right(144)
    turtle.end_poly()

    return turtle.get_poly()

screen = turtle.Screen()
width, height = screen.window_width() / 2, screen.window_height() / 2

turtle.penup()  # use the 'default' turtle to create the other two turtles
turtle.hideturtle()
turtle.setheading(90)
turtle.speed('fastest')

screen.register_shape('crescent', crescent(SHAPE_SIZE))
crescent_turtle = turtle.Turtle('crescent', visible=False)
crescent_turtle.speed('fastest')
crescent_turtle.penup()

screen.register_shape('star', star(SHAPE_SIZE))
star_turtle = turtle.Turtle('star', visible=False)
star_turtle.speed('fastest')
star_turtle.penup()

for _ in range(25):
    x, y = randint(-width, width), randint(-height, height)

    r, g, b = random(), random(), random()
    shape_color = (r, g, b)

    size = randint(5, 50)

    heading = [0, 180][randint(0, 1)]

    for tortoise in [crescent_turtle, star_turtle]:
        tortoise.turtlesize(SHAPE_SIZE / size, outline=1)
        tortoise.setheading(heading)
        tortoise.color(shape_color)
        tortoise.goto(x, y)
        tortoise.stamp()

screen.exitonclick()

在某些方面,它可以简化逻辑(将star()crescent()与其他解决方案进行比较。)它也有其局限性,例如,我们需要使用简单的多边形。

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