python中有很多方法去画心形图用来表白，其中最典型的就是数学中心型曲线：r=a(1-sinθ)，下面就总结以下python中那些画心形图的方法。末尾有一个完美的表白工具，可以直接使用。

数学中美丽的心形线：r=a(1-sinθ)

import numpy as np
import matplotlib.pyplot as plt
T = np.linspace(0, 2 * np.pi, 1024)  # 角度范围 0-2*pi，划为1024等份
plt.axes(polar=True)    # 开启极坐标模式
plt.plot(T, 1. - np.sin(T), color="r")
plt.show()

利用python的turtle教你动态的爱心图表白

import turtle
turtle.color('red', 'pink')
turtle.pensize(2)
turtle.pendown()
turtle.setheading(150)
turtle.begin_fill()
turtle.fd(50)
turtle.circle(50 * -3.745, 45)
turtle.circle(50 * -1.431, 165)
turtle.left(120)
turtle.circle(50 * -1.431, 165)
turtle.circle(50 * -3.745, 45)
turtle.fd(50)
turtle.end_fill()

利用python的plt教你画渐变颜色爱心图表白

import matplotlib.pyplot as plt
from matplotlib import animation
import numpy as np
import math

t = np.linspace(0, math.pi, 1000)
x = np.sin(t)
y = np.cos(t) + np.power(x, 2.0 / 3)  # 心型曲线的参数方程

plt.scatter(x, y, c=y, cmap=plt.cm.Reds, edgecolor='none', s=40)
plt.scatter(-x, y, c=y, cmap=plt.cm.Reds, edgecolor='none', s=40)  # 渐变颜色曲线
# 填充曲线
plt.fill(x, y, 'r', alpha=0.6)
plt.fill(-x, y, 'r', alpha=0.6)

plt.axis([-2, 2, -2, 2])  # 坐标轴范围
plt.title("I love you", fontsize=30)
# 取消坐标轴显示
plt.axis('off')
# 保存文件
plt.savefig("❤图1.png")  # 在 plt.show() 之前调用 plt.savefig()
plt.show()

alpha=0

alpha=0.3

alpha=0.6

利用python的plt教你画3D爱心图表白

# coding=utf-8
# 3D心形

import matplotlib.pyplot as plt
import numpy as np
import matplotlib

matplotlib.rcParams['axes.unicode_minus'] = False


def heart_3d(x, y, z):
    return (x**2+(9/4)*y**2+z**2-1)**3-x**2*z**3-(9/80)*y**2*z**3


def plot_implicit(fn, bbox=(-1.5, 1.5)):
    xmin, xmax, ymin, ymax, zmin, zmax = bbox*3
    fig = plt.figure()
    ax = fig.add_subplot(111, projection='3d')
    A = np.linspace(xmin, xmax, 100)    # 轮廓分辨率
    B = np.linspace(xmin, xmax, 40)     # 切片数量
    A1, A2 = np.meshgrid(A, A)          # 绘制等高线的网格

    for z in B:     # 在XY平面绘制等高线
        X, Y = A1, A2
        Z = fn(X, Y, z)
        cset = ax.contour(X, Y, Z+z, [z], zdir='z', colors=('r',))

    for y in B:     # 在XZ平面绘制等高线
        X, Z = A1, A2
        Y = fn(X, y, Z)
        cset = ax.contour(X, Y+y, Z, [y], zdir='y', colors=('red',))

    for x in B:     # 在YZ平面绘制等高线
        Y, Z = A1, A2
        X = fn(x, Y, Z)
        cset = ax.contour(X+x, Y, Z, [x], zdir='x',colors=('red',))

    ax.set_zlim3d(zmin, zmax)
    ax.set_xlim3d(xmin, xmax)
    ax.set_ylim3d(ymin, ymax)
    # 标题
    plt.title("I love you", fontsize=30)
    # 取消坐标轴显示
    plt.axis('off')
    # 保存文件
    plt.savefig("3D_❤图.png")  # 在 plt.show() 之前调用 plt.savefig()
    plt.show()


if __name__ == '__main__':
    plot_implicit(heart_3d)

利用python一行代码教你画爱心图表白

print('\n'.join([''.join([('ILOVEYOUWP'[(x-y) % 10]if((x*0.05)**2+(y*0.1)**2-1)**3-(x*0.05)**2*(y*0.1)**3<=0 else' ')for x in range(-60,60)])for y in range(30,-30,-1)]))

利用python几行代码教你画爱心图表白

import time
ILY = input('请输入你想对她说的话:')
for item in ILY.split():
    print('\n'.join([''.join([(item[(x-y) % len(item)] if ((x*0.05)**2+(y*0.1)**2-1)**3-(x*0.05)**2*(y*0.1)**3 <= 0 else ' ') for x in range(-60, 60)]) for y in range(30, -30, -1)]))
    time.sleep(3);

完美表白工具

import turtle
import time


# 清屏函数
def clear_all():
    turtle.penup()
    turtle.goto(0, 0)
    turtle.color('white')
    turtle.pensize(800)
    turtle.pendown()
    turtle.setheading(0)
    turtle.fd(300)
    turtle.bk(600)


# 重定位海龟的位置
def go_to(x, y, state):
    turtle.pendown() if state else turtle.penup()
    turtle.goto(x, y)


# 画爱心
def draw_heart(size):
    turtle.color('red', 'pink')
    turtle.pensize(2)
    turtle.pendown()
    turtle.setheading(150)
    turtle.begin_fill()
    turtle.fd(size)
    turtle.circle(size * -3.745, 45)
    turtle.circle(size * -1.431, 165)
    turtle.left(120)
    turtle.circle(size * -1.431, 165)
    turtle.circle(size * -3.745, 45)
    turtle.fd(size)
    turtle.end_fill()


# 画出发射爱心的小人
def draw_people(x, y):
    turtle.penup()
    turtle.goto(x, y)
    turtle.pendown()
    turtle.pensize(2)
    turtle.color('black')
    turtle.setheading(0)
    turtle.circle(60, 360)
    turtle.penup()
    turtle.setheading(90)
    turtle.fd(75)
    turtle.setheading(180)
    turtle.fd(20)
    turtle.pensize(4)
    turtle.pendown()
    turtle.circle(2, 360)
    turtle.setheading(0)
    turtle.penup()
    turtle.fd(40)
    turtle.pensize(4)
    turtle.pendown()
    turtle.circle(-2, 360)
    turtle.penup()
    turtle.goto(x, y)
    turtle.setheading(-90)
    turtle.pendown()
    turtle.fd(20)
    turtle.setheading(0)
    turtle.fd(35)
    turtle.setheading(60)
    turtle.fd(10)
    turtle.penup()
    turtle.goto(x, y)
    turtle.setheading(-90)
    turtle.pendown()
    turtle.fd(40)
    turtle.setheading(0)
    turtle.fd(35)
    turtle.setheading(-60)
    turtle.fd(10)
    turtle.penup()
    turtle.goto(x, y)
    turtle.setheading(-90)
    turtle.pendown()
    turtle.fd(60)
    turtle.setheading(-135)
    turtle.fd(60)
    turtle.bk(60)
    turtle.setheading(-45)
    turtle.fd(30)
    turtle.setheading(-135)
    turtle.fd(35)
    turtle.penup()


# 第一个画面，显示文字
def page0():
    turtle.penup()
    turtle.goto(-350, 0)
    turtle.color('red')
    turtle.write('有你生活成缤纷多彩', font=('宋体', 60, 'normal'))
    turtle.penup()
    turtle.goto(-160, -180)
    draw_heart(30)
    turtle.penup()
    turtle.goto(0, -180)
    draw_heart(30)
    turtle.penup()
    turtle.goto(160, -180)
    draw_heart(30)
    time.sleep(3)


# 第二个画面，显示发射爱心的小人
def page1():
    turtle.speed(10)
    turtle.penup()
    turtle.goto(-200, -200)
    turtle.color('red')
    turtle.pendown()
    turtle.write('WYJ WP', font=('wisdom', 50, 'normal'))
    turtle.penup()
    turtle.goto(0, -180)
    draw_heart(10)
    draw_people(-250, 20)
    turtle.penup()
    turtle.goto(-150, -30)
    draw_heart(14)
    turtle.penup()
    turtle.goto(-20, -60)
    draw_heart(25)
    turtle.penup()
    turtle.goto(250, -100)
    draw_heart(45)
    turtle.hideturtle()
    # 写送给谁
    turtle.pencolor("PINK")
    turtle.penup()
    turtle.goto(300, 200)
    turtle.write(str, move=False, align='center', font=("方正舒体", 30, 'normal'))
    time.sleep(3)


def main():
    turtle.setup(900, 500)
    page0()
    clear_all()
    page1()
    clear_all()
    turtle.done()


if __name__ == '__main__':
     str = input('请输入表白语：')
    main()