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 | import tkinter as tk
from tkinter.constants import * 
 
class Canvas(tk.Canvas):
    selected = None
    last_xy = None
 
    def bind_item(self):
        self.tag_bind('copy_and_drop', "<ButtonPress-1>", self.on_item_click)
        self.tag_bind('copy_and_drop', "<Button1-Motion>",
                      lambda e: self._move_selected(e.x, e.y))
        self.tag_bind('copy_and_drop', "<ButtonRelease-1>",
                      lambda e: self._move_selected(e.x, e.y, 0))
 
    def _move_selected(self, x1, y1, min_pixels=5):
        x0, y0 = self.last_xy
        dx, dy = x1 - x0, y1 - y0
        if abs(dx) > min_pixels or abs(dy) > min_pixels:
            self.move(self.selected, dx, dy)
            self.last_xy = x1, y1
 
    def on_item_click(self, event):
        iid = self.find_withtag('current')
        self.selected = self._copy_item(iid)
        self.last_xy = event.x, event.y
 
    def _copy_item(self, iid):
        type_ = self.type(iid)
        assert type_ == 'oval'
        coords = self.coords(iid)
        kwds = self.itemconfigure(iid)
        kwds = { k: v[-1] for k, v in kwds.items() if k != 'tags' }
        return self.create_oval(*coords, **kwds)
 
if __name__ == '__main__':
    c = Canvas()
    c.pack(fill=BOTH, expand=YES)
    c.create_oval(10, 10, 150, 100, fill='blue', tag='copy_and_drop',
                        activeoutline='red', activewidth=3)
    c.bind_item()
    tk.mainloop() | 
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