Create Stunning Valentine’s Day Heart Graphics with Python in Minutes

Valentine’s Day is approaching, and programmers love sharing "love code" that draws heart shapes, a trend that has even trended on Chinese social media. This guide presents four progressively more complex Python examples for creating heart graphics.

Part 1: Text‑Effect Heart

The first example prints a heart made of the word "Love" using a mathematical condition to shape the characters.

print('
'.join([''.join(('Love'[(x-y) % len('Love')] 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(-30, 30)]) for y in range(30, -30, -1)]))

Result:

Part 2: Red Heart with Turtle

This snippet uses the turtle module to draw a solid red heart.

import turtle as t
t.color('red')
t.setheading(50)
t.begin_fill()
t.circle(-100, 170)
t.circle(-300, 40)
t.right(38)
t.circle(-300, 40)
t.circle(-100, 170)
t.end_fill()
t.done()

Result:

Part 3: Custom Message Heart

This version prompts the user for a love message and a recipient’s name, then draws a heart and writes the text inside.

import turtle as t
import time

def LittleHeart():
    for i in range(200):
        t.right(1)
        t.forward(2)

love = input('请输入表白语句，然后回车，默认为"I Love You":
')
me = input('请输入要表白的人:
')
if love == '':
    love = 'I Love you'

t.setup(width=900, height=600)
 t.color('red', 'pink')
 t.pensize(5)
 t.speed(10)
 t.up()
 t.hideturtle()
 t.goto(0, -180)
 t.showturtle()
 t.down()
 t.speed(5)
 t.begin_fill()
 t.left(140)
 t.forward(224)
 LittleHeart()
 t.left(120)
 LittleHeart()
 t.forward(224)
 t.end_fill()
 t.pensize(5)
 t.up()
 t.hideturtle()
 t.goto(0, 0)
 t.showturtle()
 t.color('#CD5C5C', 'pink')
 t.write(love, font=('gungsuh', 30), align='center')
 t.up()
 t.hideturtle()
 if me != '':
    t.color('black', 'pink')
    time.sleep(2)
 t.goto(180, -180)
 t.showturtle()
 t.write(me, font=(20,), align='center', move=True)
 window = t.Screen()
 window.exitonclick()

Result:

Part 4: Animated Beating Heart (Tkinter)

The final example creates a full‑screen animated heart using tkinter, random point generation, and a custom class to render a pulsating effect.

import random
import ctypes
from math import sin, cos, pi, log
from tkinter import *

user32 = ctypes.windll.user32
CANVAS_WIDTH = user32.GetSystemMetrics(0)
CANVAS_HEIGHT = user32.GetSystemMetrics(1)
CANVAS_CENTER_X = CANVAS_WIDTH / 2
CANVAS_CENTER_Y = CANVAS_HEIGHT / 2
IMAGE_ENLARGE = 11
HEART_COLOR = "#ff2121"

def heart_function(t, shrink_ratio: float = IMAGE_ENLARGE):
    x = 16 * (sin(t) ** 3)
    y = - (13 * cos(t) - 5 * cos(2 * t) - 2 * cos(3 * t) - cos(4 * t))
    x *= shrink_ratio
    y *= shrink_ratio
    x += CANVAS_CENTER_X
    y += CANVAS_CENTER_Y
    return int(x), int(y)

def scatter_inside(x, y, beta=0.15):
    ratio_x = - beta * log(random.random())
    ratio_y = - beta * log(random.random())
    dx = ratio_x * (x - CANVAS_CENTER_X)
    dy = ratio_y * (y - CANVAS_CENTER_Y)
    return x - dx, y - dy

def shrink(x, y, ratio):
    force = -1 / (((x - CANVAS_CENTER_X) ** 2 + (y - CANVAS_CENTER_Y) ** 2) ** 0.6)
    dx = ratio * force * (x - CANVAS_CENTER_X)
    dy = ratio * force * (y - CANVAS_CENTER_Y)
    return x - dx, y - dy

def curve(p):
    return 2 * (2 * sin(4 * p)) / (2 * pi)

class Heart:
    """Heart class"""
    def __init__(self, generate_frame=20):
        self._points = set()
        self._edge_diffusion_points = set()
        self._center_diffusion_points = set()
        self.all_points = {}
        self.build(2000)
        self.random_halo = 1000
        self.generate_frame = generate_frame
        for frame in range(generate_frame):
            self.calc(frame)
    def build(self, number):
        for _ in range(number):
            t = random.uniform(0, 2 * pi)
            x, y = heart_function(t)
            self._points.add((x, y))
        for _x, _y in list(self._points):
            for _ in range(3):
                x, y = scatter_inside(_x, _y, 0.05)
                self._edge_diffusion_points.add((x, y))
        point_list = list(self._points)
        for _ in range(4000):
            x, y = random.choice(point_list)
            x, y = scatter_inside(x, y, 0.17)
            self._center_diffusion_points.add((x, y))
    @staticmethod
    def calc_position(x, y, ratio):
        force = 1 / (((x - CANVAS_CENTER_X) ** 2 + (y - CANVAS_CENTER_Y) ** 2) ** 0.520)
        dx = ratio * force * (x - CANVAS_CENTER_X) + random.randint(-1, 1)
        dy = ratio * force * (y - CANVAS_CENTER_Y) + random.randint(-1, 1)
        return x - dx, y - dy
    def calc(self, generate_frame):
        ratio = 10 * curve(generate_frame / 10 * pi)
        halo_radius = int(4 + 6 * (1 + curve(generate_frame / 10 * pi)))
        halo_number = int(3000 + 4000 * abs(curve(generate_frame / 10 * pi) ** 2))
        all_points = []
        heart_halo_point = set()
        for _ in range(halo_number):
            t = random.uniform(0, 2 * pi)
            x, y = heart_function(t, shrink_ratio=11.6)
            x, y = shrink(x, y, halo_radius)
            if (x, y) not in heart_halo_point:
                heart_halo_point.add((x, y))
                x += random.randint(-14, 14)
                y += random.randint(-14, 14)
                size = random.choice((1, 2, 2))
                all_points.append((x, y, size))
        for x, y in self._points:
            x, y = self.calc_position(x, y, ratio)
            size = random.randint(1, 3)
            all_points.append((x, y, size))
        for x, y in self._edge_diffusion_points:
            x, y = self.calc_position(x, y, ratio)
            size = random.randint(1, 2)
            all_points.append((x, y, size))
        for x, y in self._center_diffusion_points:
            x, y = self.calc_position(x, y, ratio)
            size = random.randint(1, 2)
            all_points.append((x, y, size))
        self.all_points[generate_frame] = all_points
    def render(self, render_canvas, render_frame):
        for x, y, size in self.all_points[render_frame % self.generate_frame]:
            render_canvas.create_rectangle(x, y, x + size, y + size, width=0, fill=HEART_COLOR)

def draw(main, render_canvas, render_heart, render_frame=0):
    render_canvas.delete('all')
    render_heart.render(render_canvas, render_frame)
    main.after(160, draw, main, render_canvas, render_heart, render_frame + 1)

if __name__ == '__main__':
    root = Tk()
    root.attributes('-fullscreen', True)
    root.attributes('-alpha', 0.9)
    canvas = Canvas(root, bg='black', height=CANVAS_HEIGHT, width=CANVAS_WIDTH)
    canvas.pack()
    heart = Heart()
    draw(root, canvas, heart)
    root.mainloop()

Result (animated GIF):

These four examples let you quickly create eye‑catching heart graphics for Valentine’s Day, whether you need a simple console output, a static Turtle drawing, a personalized message, or a full‑screen animated effect.