Write a programBasic10 XPExercise 7/8

Circles by clicking

Task

After every left click draw a circle with radius 25 centred where you clicked. Choose the colour yourself.

The program runs in a tkinter simulation right in your browser - after Run you see the window and can click it. The tests click and check what was drawn on the canvas.

Examples

Call

from tkinter import _mente as okno


def sedi(k, x, y):
    x1, x2 = sorted([k.coords[0], k.coords[2]])
    y1, y2 = sorted([k.coords[1], k.coords[3]])
    return abs(x1 - (x - 25)) <= 1 and abs(x2 - (x + 25)) <= 1 and abs(y1 - (y - 25)) <= 1 and abs(y2 - (y + 25)) <= 1


okno.click(100, 120)
okno.click(300, 200)
kruhy = okno.items("oval")
okno.check("kazdy klik nakreslil kruh", len(kruhy) == 2, f"kruhov: {len(kruhy)}")
okno.check("kruhy maju stred v mieste kliknutia a polomer 25", len(kruhy) == 2 and sedi(kruhy[0], 100, 120) and sedi(kruhy[1], 300, 200))

Expected output

kazdy klik nakreslil kruh: OK
kruhy maju stred v mieste kliknutia a polomer 25: OK

Python starts the first time you run code.

import tkinter
canvas = tkinter.Canvas(width=400, height=400)
canvas.pack()
def kruh(event):
    pass
canvas.bind("<Button-1>", kruh)
tkinter.mainloop()

Ctrl+Enter runs the program. Tab indents. Press Esc, then Tab, to leave the editor.

Input (stdin)

Each line = one call to input().

Output

Hints

Try it yourself first. Each hint reveals a little more - and lowers the reward a little.

Signed out, hints are free - but no XP is awarded either.

Solution

The solution unlocks after the last hint.