cờ giải phóng

flag_30_4_1975.py

from turtle import * 
bgcolor("#f00"),setup(600,400,800,80)
hideturtle(), tracer(0), penup()

from math import sin, cos, pi
from time import perf_counter
def _30_4_1975():
    update(), clear()
    t = perf_counter()*3
    goto(0,-9999), dot(9999*2, (0,0.5,1))
    color("#ff0")
    begin_fill()
    for i in range(401):
        a = (i/400)*4*pi
        R = 50/cos(a%(pi*4/5)-pi*4/5/2)
        goto(R*cos(a+pi/2)+2*cos(t+R), R*sin(a+pi/2)+2*sin(t+R))
    end_fill()
    ontimer(_30_4_1975, 10)
_30_4_1975()
mainloop()
# Ps: chỉ chạy đúng trên các phiên bản Python 3.11 trở xuống