How to draw lines in tkinter?

Question

Python

I want to draw lines in tkinter. If I quickly draw with this code, then there is space between the circles. I know that I need to generate lines between these circles, but for this I need the previous coordinates of the circle and I do not know how these coordinates can be obtained. How can I do that?

from tkinter import *
root = Tk()
canv = Canvas(bg="white", width=1000,height=1000)  
canv.pack()

def onmotion(event):	
  canv.create_oval((event.x, event.y, event.x+20, event.y+20),  width=0,  fill='black')
  #canv.create_line(?, ?, event.x+10, event.y+10,width=20, fill='black')

canv.bind("<B1-Motion>", onmotion)
root.mainloop()

Answer 1

I managed. True, the code is written haphazardly, but it works. Even better lines can be achieved using smooth (smoothing the line), but for this, in addition to the last and penultimate coordinates, the penultimate coordinates are also needed

from tkinter import *
root = Tk()
canv = Canvas(bg="white", width=1000,height=1000)  
canv.pack()
def click(event):	
  canv.create_oval((event.x, event.y, event.x+20, event.y+20),  width=0,  fill='black')
  xp = event.x
  yp = event.y
  xp = str(xp)+'\n'
  yp = str(yp)
  f = open('tt.txt','w')
  xp = f.write(xp)
  yp = f.write(yp)
  f.close
  canv.bind("<B1-Motion>", onmotion)
def onmotion(event):
  f = open(r'tt.txt')
  xp = f.readlines()	
  xp[0] = int(xp[0])+10
  xp[1] = int(xp[1])+10	
  f.close
  canv.create_oval((event.x, event.y, event.x+20, event.y+20),  width=0,  fill='black')
  canv.create_line(xp[0], xp[1], event.x+10, event.y+10,width=20, fill='black')
  xp = event.x
  yp = event.y
  xp = str(xp)+'\n'
  yp = str(yp)
  f = open('tt.txt','w')
  xp = f.write(xp)
  yp = f.write(yp)
  f.close	
canv.bind("<Button-1>", click)
root.mainloop()

Answer 2

canv.create_line(x1, y1, x2, y2)
Read more here: https://python-scripts.com/tkinter-canvas-example