from tkinter import*
from random import*

def chgt1_color():
    x1,y1=0,0
    x2,y2=500,500
    for i in range(4):
            cercleB = canvas.create_oval(x1, y1, x2, y2,fill='white')
            x1,y1= x1+30, y1+30
            x2,y2=x2-30,y2-30
            cercleW = canvas.create_oval(x1,y1,x2,y2,fill='black')
            x1,y1= x1+30, y1+30
            x2,y2=x2-30,y2-30

def chgt2_color():
    x1,y1=0,0
    x2,y2=500,500
    liste=["blue","red","orange","green","purple","yellow","cyan","magenta","lime","aqua"]
    for i in range(4):
            cercleB = canvas.create_oval(x1, y1, x2, y2,fill=liste[randint(0,9)])
            x1,y1= x1+30, y1+30
            x2,y2=x2-30,y2-30
            cercleW = canvas.create_oval(x1,y1,x2,y2,fill=liste[randint(0,9)])
            x1,y1= x1+30, y1+30
            x2,y2=x2-30,y2-30


def cercle1():
    global id
    canvas.after_cancel(id)
    canvas.delete(ALL)
    x1,y1=0,0
    x2,y2=500,500
    for i in range(4):
        cercleB = canvas.create_oval(x1, y1, x2, y2,fill='black')
        x1,y1= x1+30, y1+30
        x2,y2=x2-30,y2-30
        cercleW = canvas.create_oval(x1,y1,x2,y2,fill='white')
        x1,y1= x1+30, y1+30
        x2,y2=x2-30,y2-30
    id=canvas.after(1000,chgt1_color)
    id=canvas.after(2000,cercle1)


def cercle2():
    global id
    canvas.after_cancel(id)
    canvas.delete(ALL)
    x1,y1=0,0
    x2,y2=500,500
    liste=["blue","red","orange","green","purple","yellow","cyan","magenta","lime","aqua"]
    for i in range(4):
        cercleB = canvas.create_oval(x1, y1, x2, y2,fill=liste[randint(0,9)])
        x1,y1= x1+30, y1+30
        x2,y2=x2-30,y2-30
        cercleW = canvas.create_oval(x1,y1,x2,y2,fill=liste[randint(0,9)])
        x1,y1= x1+30, y1+30
        x2,y2=x2-30,y2-30
    id=canvas.after(1000,chgt2_color)
    id=canvas.after(2000,cercle2)

fen=Tk()

canvas= Canvas(fen, height=500, width=500,bg='white')
canvas.pack()

frame= Frame(width=500, height=50)
frame.pack(expand=TRUE)

bouton1= Button(frame,text='dessin1',command=cercle1)
bouton1.grid(column=1,row=1)

bouton2 = Button(frame,text='dessin2',command=cercle2)
bouton2.grid(column=2,row=1)

fen.mainloop()