import time, random
from tkinter import *

def hyppa(event):
   ala.coords(ovaal, event.x, event.y, 
                 event.x+random.randint(10,20), event.y+10)

aken = Tk()
ala = Canvas(aken, width=400, height=300, bg='white')
ala.pack()

x = 0
y = 10
r = 30

ovaal=ala.create_oval(x, y, x+r, y+r, fill="blue")
#ala.bind("<Button-1>", hyppa)
ala.tag_bind(ovaal, "<Button-1>", hyppa)

aken.mainloop()