刚刚起步python，觉得python turtle真是萌神一般的存在呀～ 试着画了颗“心”，不过觉得方法实在是太笨了> 
回复内容：
from turtle import *
def curvemove():
for i in range(200):
right(1)
forward(1)
color('red','pink')
begin_fill()
left(140)
forward(111.65)
curvemove()
left(120)
curvemove()
forward(111.65)
end_fill()
done()
from turtle import *pensize(1)
color('black','red')
speed(2)
up()
goto(-12,100)
down()
begin_fill()
left(90)
circle(120,180)
circle(360,70.529)
left(38.942)
circle(360,70.529)
circle(120,180)
end_fill()
up()
goto(-250,-150)
down()
from pylab import*
t=linspace(0,2*pi,100)
x=sin(2*t) + 2*sin(t)
y=-cos(2*t)-2*cos(t)
fill(x,y,'r')
show()
心没画，玫瑰花倒是有一个
之前忘了帖代码，现在补上。for i in range (1):
def paint(ang,r,ang2): #画图函数
turtle.penup()
turtle.setheading(ang)
turtle.pendown()
turtle.circle(r,ang2)
import turtle
turtle.speed(9)
turtle.color("white") #设置
turtle.pensize(7)
turtle.penup()
turtle.goto(50,-50)
turtle.pendown()
turtle.dot(200,"pink") #画背景
turtle.penup()
turtle.goto(50,86.6)
ang=-150
r=300
ang2=46
for j in range (21): #循环
paint(ang,r,ang2) #画弧
ang2-=25
paint(ang+ang2+25,r,-ang2) #回退
ang2+=25
ang+=66
r=r*0.9
思路大概就是：画圆弧，回退大约1/3，转向，减小半径，画圆弧......一直循环...
视频传送门Python玫瑰花_生活
提醒我贴代码的那个小同学，我看了你资料，看来你和我一个学校而且选的同一个选修课呢。不过我这个作业交过了，所以你参考一下，不懂的可以问我。
照抄的话老师会打你屁屁的
(╯‵□′)╯︵┻━┻。35道哪个不会可以私信我。我给你思路~不过最近考试周，我不一定都能帮得上忙。。。
--------------15.12.31-----------------
import sys
import math
def frange(start, end, step=1.0):
if step > 0:
while start < end:
yield start
start += step
elif step < 0:
while start > end:
yield start
start += step
else:
raise ValueError('range() step must not be zero')
def f(x, y, z):
a = x*x + 9.0/4*y*y + z*z - 1
return a*a*a - x*x*z*z*z - 9.0/80*y*y*z*z*z
def h(x, z):
for y in frange(1.0, 0.0, -0.001):
if f(x, y, z) <= 0:
return y
return 0.0
if __name__ == '__main__':
for z in frange(1.5, -1.5, -0.1):
for x in frange(-1.5, 1.5, 0.05):
v = f(x, 0, z)
if v <= 0:
y0 = h(x, z)
ny = 0.01
nx = h(x + ny, z) - y0
nz = h(x, z + ny) - y0
nd = 1.0/math.sqrt(nx*nx+ny*ny+nz*nz)
d = (nx + ny - nz)*nd*0.5 + 0.5
sys.stdout.write('.:-=+*#%@'[int(d*5)])
else:
sys.stdout.write(' ')
sys.stdout.write('\n')
用python matplotlib画笛卡尔的心形线
import numpy as npimport pylab as plt
from matplotlib import colors
a = [[] for i in range(1000)]
i = 0
while i j = 0
while j x = -1.8 + 0.003*i
y = -1.4 + 0.0028*j
z = y**2 + (-x - (y**2)**0.33333)**2
if z a[i].append(0.9)
else:
a[i].append(0.0)
j = j + 1
i = i + 1
cmap = colors.ListedColormap(['white', 'pink'])
im = plt.imshow(a, cmap = cmap, interpolation="bicubic" )
plt.show()
