drag an arc after creating a line tkinter

Here was the code to draw a line. Is it possible to let the user drag a line so that it forms a curve?

from tkinter import Canvas, Tk
# Image dimensions
w,h = 640,480
# Create canvas
root = Tk()
canvas = Canvas(root, width = w, height = h, bg = 'white')
canvas.pack()
def on_click(event):
    """ set starting point of the line """
    global x1, y1
    x1 = event.x
    y1 = event.y
def on_click_release(event):
    """ draw the line """
    canvas.create_line(x1, y1, event.x, event.y)
def clear_canvas(event):
    canvas.delete('all')
canvas.bind("<Button-1>", on_click) 
canvas.bind("<ButtonRelease-1>", on_click_release)
root.bind("<Key-c>", clear_canvas)
root.mainloop()

Once again thank youuuuu!!! :)))))