初出茅庐——利用Python的Turtle库绘制玫瑰花
用Python绘制一朵玫瑰花（附源代码）
要求：
①电脑需配备Python3.xx的环境
②需要的模块包 turtle(Python内置包）
Turtle（）
个人接触的第一个Python库就是Turtle，业内Guido称我们这类人为：画龟入门。
（Turtle）绘制Rose（）
成品图
此图应该是全网拿Python绘制最好看玫瑰花，自信一点说，自己动手翻阅博客，目前没有找到阔以与之媲美的，当然好看是需要代价的，繁琐的循环，500+行的代码，计算起来，复杂程度不用我多说，所以个人推荐：Copy走自己玩一玩即可，尽量不要自己动手瞧，纯纯浪费时间，仅供娱乐。
代码展示
#套用的循环我已放入Shell命令行供大家参考改进。
'''
# a+=
# if i<:
# left()
# elif =:
# pensize(a)
# forward()
# a-=
# if
#环境配备：Python自带的turtle库
#Created on Nov 10, 2019
#@author: Lkang
from turtle import *
#设置绘制起点
setup (700,700)
#画笔颜色
pencolor("red")
hideturtle()
penup()
goto(0,280)
pendown()
left(135)
speed(0)
#左侧弧形绘制
a=0.2
for i in range (80):
if i < 50:
pensize(a)
forward(2)
a+=0.15
if i<10:
left(0.7)
elif 10( 1)
elif 24(3)
elif 40(4)
elif i >=50:
pensize(a)
forward(2.2)
a-=0.25
if 50(6.7)
elif 65(2)
setheading(0)
penup()
goto(40,305)
pendown()
left(145)
#右侧弧形绘制
a=0.1
for i in range (100):
if i < 60:
pensize(a)
forward(3)
a+=0.15
if i<10:
left(0.8)
elif 10(0.8)
elif 24(1.7)
elif 40(2.2)
elif i >=60:
pensize(a)
forward(2.4)
a-=0.15
if 60(3.2)
elif 85(4)
setheading(0)
penup()
goto(45,320)
pendown()
left(10)
a=0.1
for i in range (100):
if i < 60:
pensize(a)
forward(3)
a+=0.15
if i<17:
right(3.2)
elif 17(3.5)
elif 20(6.8)
elif 40(0.6)
elif 50(1)
elif i >=60:
pensize(a)
forward(2.4)
a-=0.16
if 60(0.4)
elif 85(1)
setheading(0)
penup()
goto(-135,265)
pendown()
left(160)
a=0.1
for i in range (120):
if i < 60:
pensize(a)
forward(3)
a+=0.15
if i<10:
left(2)
elif 10(8)
elif 15(6)
elif 35(4)
elif 40(1)
elif i >=60:
pensize(a)
forward(3)
a-=0.15
if 60(0.4)
elif 90(0.8)
setheading(0)
penup()
goto(80,250)
pendown()
left(245)
a=0.2
for i in range (80):
if i < 40:
pensize(a)
forward(1.2)
a+=0.15
if i<15:
left(0.6)
elif 15(0.3)
elif i >=40:
pensize(a)
forward(1.2)
a-=0.15
if 40(0.6)
elif 65(0.35)
setheading(0)
penup()
goto(-150,195)
pendown()
left(300)
a=0.2
for i in range (80):
if i < 40:
pensize(a)
forward(1.2)
a+=0.16
if i<15:
right(0.6)
elif 15(0.3)
elif i >=40:
pensize(a)
forward(1.2)
a-=0.16
if 40(0.6)
elif 65(0.35)
setheading(0)
penup()
goto(-205,225)
pendown()
left(194)
a=0.1
for i in range (100):
if i < 50:
pensize(a)
forward(3)
a+=0.15
if i<10:
left(7)
elif 10(3)
elif 30(0.1)
elif i >=50:
pensize(a)
forward(3)
a-=0.15
if 50(0.3)
elif 80(0.6)
setheading(0)
penup()
goto(110,280)
pendown()
left(6)
a=0.1
for i in range (120):
if i < 60:
pensize(a)
forward(3)
a+=0.15
if i<10:
right(4.5)
elif 10(5)
elif 30(0.1)
elif i >=60:
pensize(a)
forward(3)
a-=0.15
if 50(0.6)
elif 80(0.9)
setheading(0)
penup()
goto(-160,110)
pendown()
left(283)
a=0.2
for i in range (80):
if i < 40:
pensize(a)
forward(2.4)
a+=0.15
if i<10:
right(0.6)
elif 15(0.1)
elif i >=40:
pensize(a)
forward(2.4)
a-=0.15
if 40(2)
elif 65(3)
setheading(0)
penup()
goto(90,155)
pendown()
left(258)
a=0.2
for i in range (80):
if i < 40:
pensize(a)
forward(3)
a+=0.15
if i<10:
left(0.8)
elif 15(0.1)
elif i >=40:
pensize(a)
forward(3)
a-=0.15
if 40(2)
elif 65(3)
setheading(0)
penup()
goto(-60,-45)
pendown()
right(9)
a=0.2
for i in range (40):
if i < 20:
pensize(a)
forward(1.3)
a+=0.15
if i<5:
left(0.7)
elif 5(0.4)
elif i >=20:
pensize(a)
forward(1.3)
a-=0.15
if 20(0.7)
elif 35(0.4)
setheading(0)
penup()
goto(-70,-55)
pencolor("green")
pendown()
right(170)
a=0.2
for i in range (80):
if i <40 :
pensize(a)
forward(2)
a+=0.15
if i<25:
right(0.5)
elif 25(1)
elif i >=40:
pensize(a)
forward(2.5)
a-=0.15
if 40(1)
elif 55(2)
elif 70(1)
setheading(270)
left(30)
a=0.2
for i in range (80):
if i <40 :
pensize(a)
forward(2.5)
a+=0.15
if i<25:
left(0.5)
elif 25(1)
elif i >=40:
pensize(a)
forward(3)
a-=0.15
if 40(2)
elif 55(1.3)
elif 70(1)
setheading(270)
penup()
goto(20,-55)
pendown()
left(65)
a=0.2
for i in range (60):
if i <30 :
pensize(a)
forward(2)
a+=0.15
if i<15:
left(1)
elif 15(2)
elif i >=30:
pensize(a)
forward(2.5)
a-=0.15
if 30(2)
elif 45(2.5)
elif 50(1.5)
setheading(270)
right(17)
a=0.2
for i in range (80):
if i <40 :
pensize(a)
forward(2.2)
a+=0.15
if i<25:
right(1)
elif 25(2)
elif i >=40:
pensize(a)
forward(2.5)
a-=0.15
if 40(2)
elif 55(1.5)
elif 70(0.6)
setheading(0)
penup()
pencolor("brown")
goto(-49,-90)
pendown()
right(89)
a=1
for i in range (120):
if i < 60:
pensize(a)
forward(3.5)
a+=0.08
elif i >=60:
pensize(a)
forward(3.5)
a-=0.08
setheading(0)
penup()
goto(-16,-70)
pendown()
right(91)
a=1
for i in range (120):
if i < 60:
pensize(a)
forward(3.5)
a+=0.08
elif i >=60:
pensize(a)
forward(3.5)
a-=0.08
setheading(0)
speed(1)
penup()
goto(-16,-150)
pendown()
pensize(3)
left(35)
forward(15)
setheading(0)
right(115)
forward(34)
setheading(180)
penup()
goto(-49,-250)
pendown()
pensize(3)
right(35)
forward(15)
setheading(180)
left(115)
forward(34)
input()
done
是不是让繁杂的代码整懵了，哈哈哈，总的来说就是不断套用循环的思路去绘制，只是其中用到的数理知识比较多，所以呐，大家如果想玩转Turtle库得好好温习下自己的数理学知识喽。
如果大家绘制中出现了问题，欢迎留言/私信提出，我会逐一解答问题，提前祝大家新年快乐！
了解更多知识请戳下：
@Author:懒羊羊