Python 具有不同坐标的tkinter canvs.cocords()和canvs.moveto()

That behavior is documented 和 you observing the functionality as it is intended.
canvas.coords(item) will return where the item currently is.
canvas.moveto(item, *coord_list) will place the item so that the upper left corner is below 和 next to the coordinates in *coord_list.

将coords和moveto的文档进行比较.

如果未指定坐标，此命令将返回一个列表，该列表 元素是由tag OrId命名的项的坐标.

和

在画布坐标空间中移动tag OrId给出的项，以便 第一个坐标对(bounding box的左上角) 标签为tag OrID的第一个项目(显示列表中最低的)的 位于(xPos，yPos)位置

这段小代码演示了您的体验:

import tkinter as tk

def test(event):
    cnvs.moveto(rect, *cnvs.coords(rect)[0:-2])

root = tk.Tk()
cnvs = tk.Canvas(root, highlightthickness=0)
cnvs.pack()
rect = cnvs.create_rectangle(0,0,50,50, fill='red')
print(cnvs.coords(rect))
root.bind('<1>', test)
root.mainloop()

而将功能测试更改为以下测试将解决此问题:

def test(event):
    delta = int(float(cnvs.itemcget(rect, 'width'))/2)
    coords = [coordinate-delta for coordinate in cnvs.coords(rect)[0:-2]]
    cnvs.moveto(rect, *coords)

However, you would need to tweak it for different item-types with other coordinate properties as well. The usual way to update coordinates with tk 和 tkinter is to use canvas.coords(item, *new_coords) anyway.