实验任务1
task1_1
from turtle import *
def moveto(x,y):
'''
画笔移动到坐标（x,y）处
'''
penup()
goto(x,y)
pendown()
def draw(n,size = 100):
'''
绘制边长为size的正n边形
'''
for i in range(n):
fd(size)
left(360/n)
def main():
pensize(2)
pencolor('red')
moveto(-200,0)
draw(3)
moveto(0,0)
draw(4)
moveto(200,0)
draw(5)
hideturtle()
done()
main()
运行结果如图：
task1_2
# 运用circle函数，实现正多边形绘制
from turtle import *
def moveto(x,y):
'''
画笔移动到坐标（x,y）处
'''
penup()
goto(x,y)
pendown()
def main():
pensize(2)
pencolor('blue')
moveto(-150,0)
circle(50)
moveto(0,0)
circle(50,steps = 4)
moveto(150,0)
circle(50,steps = 5)
moveto(300,0)
circle(50,steps = 6)
hideturtle()
done()
main()
运行结果如图：
试验任务2
task2_1
# 用turtle绘制9个同心圆
from turtle import *
def moveto(x,y):
penup()
goto(x,y)
pendown()
def main():
setup(800,600)
radius = 20 # 圆初始半径
offset = 20 # 同心圆每次位移量
for i in range(9):
moveto(0,-radius)
circle(radius)
radius += offset
hideturtle()
done()
main()
运行截图如图：
task2_2_1
# 以(0, 0)为圆心，绘制9个彩色同心圆，色彩随机生成
from turtle import *
from random import random
def moveto(x, y):
penup()
goto(x, y)
pendown()
def gen_color():
'''
生成一个以rgb三元组表示的颜色值并返回
'''
return tuple((random() for i in range(3)))
def main():
setup(800, 600)
radius = 180 # 圆初始半径
offset = 20 # 同心圆每次位移量
for i in range(8):
moveto(0, -radius)
color(gen_color())
begin_fill()
circle(radius)
end_fill()
radius -= offset
hideturtle()
done()
main()
运行截图如图：
颜色会随机变化
若半径从小到大：
task2_2_2
# 以(0, 0)为圆心，绘制9个彩色同心圆，色彩随机生成
from turtle import *
from random import random
def moveto(x, y):
penup()
goto(x, y)
pendown()
def gen_color():
'''
生成一个以rgb三元组表示的颜色值并返回
'''
return tuple((random() for i in range(3)))
def main():
setup(800, 600)
radius = 20 # 圆初始半径
offset = 20 # 同心圆每次位移量
for i in range(8):
moveto(0, -radius)
color(gen_color())
begin_fill()
circle(radius)
end_fill()
radius += offset
hideturtle()
done()
main()
运行结果如图：
半径大的圆会填充覆盖半径小的圆
实验任务3
task3_1
# 用矩形绘制花瓣
from turtle import *
def square(size = 50, rgb = 'pink'):
'''
绘制正方形
:para: size:int 指定边长 (如未指定参数，使用默认值）
:para: c: str 指定画笔颜色值 (如未指定参数，使用默认值）
'''
pencolor(rgb)
for i in range(4):
fd(size)
left(90)
def main():
setup(800, 600)
speed(0)
n = 3
for i in range(n):
square(80)
left(360/n)
hideturtle()
done()
main()
n=3
n=4
n=5
n=6
task3_2
from turtle import *
setup(800, 600)
pencolor('pink')
n = 10
for i in range(n):
# 绘制一片花瓣
for j in range(2):
circle(80, 90)
left(90)
right(360/n)
hideturtle()
done()
运行结果如图：
实验任务4
task4
from turtle import *
setup(800, 600)
bgcolor('black')
pencolor('white')
speed(0)
angle = 0
size = 2
n = 5 # 螺旋n边形
count = 50 # 循环次数
for i in range(count):
fd(size)
angle += 360/n
seth(angle)
size += 5
hideturtle()
done()
实验结果如图：
实验任务5
task5_1
# 先画外围正方形
from turtle import *
def moveto(x, y):
penup()
goto(x, y)
pendown()
color('black')
begin_fill()
moveto(-100,-100)
for i in range(4):
fd(200)
left(90)
end_fill()
# 再画内三角形
color('red')
begin_fill()
moveto(0,-100)
left(45)
for i in range(4):
fd(100*2**(1/2))
left(90)
end_fill()
hideturtle()
done()
运行结果如图：
task5_2
size = 5
color('blue')
radius = 40
for i in range(5): # 扇形的个数
fd(radius)
left(90)
circle(radius,90)
left(90)
fd(radius)
left(90)
radius += 20
hideturtle()
done()
运行结果如图：
实验任务6
from turtle import *
screensize(100,100,'black')
def moveto(x, y):
penup()
goto(x, y)
pendown()
# 画脸
color('yellow')
begin_fill()
left(45)
fd(100)
left(90)
circle(100,270)
left(90)
fd(100)
end_fill()
# 画眼睛
moveto(10,65)
dot(15,'black')
# 画高光
moveto(8,70)
dot(8,'white')
hideturtle()
done()
运行结果如图：
实验结论：
较为简单的画图，仔细观察便可
标签：turtle,moveto,python,range,radius,绘图,def,left From： https://www.cnblogs.com/fengguowanyueyi/p/17461737.html