cenada inf

1. Window + drawing surface

import tkinter as tk
root = tk.Tk()
canvas = tk.Canvas(root, width=800, height=600, bg="white")
canvas.pack()
root.mainloop()


2. Filled circle at (x, y) with radius r and color col

canvas.create_oval(x-r, y-r, x+r, y+r, fill=col, outline=col)


3. Edge (line) between (x1, y1) and (x2, y2) with color col

canvas.create_line(x1, y1, x2, y2, fill=col, width=2)


4. Text label at (x, y)

canvas.create_text(x, y, text="your text", fill="black", font=("Arial", 12))


5. colors: 

"red", "green", "blue", "yellow", "cyan", "magenta", "orange", "gray", "black", "white"

"#00ff00"

https://www.tcl.tk/man/tcl8.6/TkCmd/colors.htm

6. change color of object based on its ID:

canvas.itemconfig(circle_id, fill="red", outline="red")