minist_drawing.py

from PIL import ImageTk, Image, ImageDraw
import PIL
from tkinter import *
import os
width = 200
height = 200
center = height//2
white = (255, 255, 255)
black = (0,0,0)
green = (0,128,0)

def save():
    j=0
    filename = "image" + str(j) + ".png"
    
    while os.path.exists(filename):
        j += 1
        filename = "image" + str(j) + ".png"
    image1.save(filename)

def clear():
    ...


def paint(event):
    x1, y1 = (event.x - 1), (event.y - 1)
    x2, y2 = (event.x + 1), (event.y + 1)
    cv.create_oval(x1, y1, x2, y2, fill="white",width=20)  # 저장되는 color
    draw.line([x1, y1, x2, y2],fill="white",width=20)

root = Tk()

# Tkinter create a canvas to draw on
cv = Canvas(root, width=width, height=height, bg='white')
cv.pack()


image1 = PIL.Image.new("RGB", (width, height), black)  # 저장되는 backgroudn color
draw = ImageDraw.Draw(image1)

cv.pack(expand=YES, fill=BOTH)
cv.bind("<B1-Motion>", paint)

button1=Button(text="save",command=save)
button2=Button(text="clear",command=clear)
button1.pack()
button2.pack()
print(image1)

root.mainloop()