Python tkinter treeview 获取/返回所选项目的 iid

Question

当用户点击一个项目并将其打印出来但由于某种原因identify() 没有接收到 event.y 变量时，它的意思是获取树视图项目的 iid，也许？

import tkinter as tk
from tkinter import ttk

class App:
    def __init__(self):
        self.root = tk.Tk()
        self.tree = ttk.Treeview()
        self.tree.pack(side="top", fill="both")
        self.tree.bind("<<TreeviewSelect>>", self.tree_click_event)

        for i in range(10):
            self.tree.insert("", "end", text="Item %s" % i)

        self.root.mainloop()

    def tree_click_event(self, event):
        iid = self.tree.identify(event.x,event.y)
        print (iid)

if __name__ == "__main__":
    app = App()

单击树视图中的项目时，错误是：

TypeError: identify() missing 1 required positional argument: 'y'

针对@TessellatingHeckler 的评论，根据链接对代码进行的编辑不会产生错误，但仍不会打印出iid：

def tree_click_event(self, event):
    item = self.tree.identify('item', event.x,event.y)
    print (item)

感谢您从@CommonSense 接受的答案总之看来我需要使用 self.tree.bind('', self.tree_click_event) 而不是 treeviewselect 来解决这个特定问题，但感谢您提供第二个做事方式也是如此

Answer 1

根据docsx, y坐标是

对 KeyPress、KeyRelease、ButtonPress、ButtonRelease、Motion、Enter、Leave、Expose、Configure、Gravity 和 Reparent 事件有效。

所以这里有一个小解决方法，可以解决一些调试打印的问题（注意<<TreeviewSelect>> 事件坐标！）：

try:
    import tkinter as tk
    import tkinter.ttk as ttk
except ImportError:
    import Tkinter as tk
    import ttk


class App:
    def __init__(self):
        self.root = tk.Tk()
        self.tree = ttk.Treeview()
        self.tree.pack(side="top", fill="both")
        self.tree.bind('<<TreeviewSelect>>', self.tree_click_event)
        self.tree.bind('<1>', self.on_click)
        for i in range(10):
            self.tree.insert("", "end", text="Item %s" % i)

        self.root.mainloop()


    def tree_click_event(self, event):
        real_coords = (self.tree.winfo_pointerx() - self.tree.winfo_rootx(),
                       self.tree.winfo_pointery() - self.tree.winfo_rooty())
        item = self.tree.identify('item', *real_coords)
        print('********** tree selection event **********')
        print('looks like this virtual event doesnt support event coordinates')
        print('event.x: %d, event.y: %d' % (event.x, event.y))
        print('real.x: %d, real.y: %d' % real_coords)
        print('clicked on', self.tree.item(item)['text'])
        print('******************************************\n')


    def on_click(self, event):
        item = self.tree.identify('item', event.x, event.y)
        print('********** tree mouse click event **********')
        print('clicked on', self.tree.item(item)['text'])
        print('event.x: %d, event.y: %d' % (event.x, event.y))
        print('******************************************\n')



if __name__ == "__main__":
    app = App()

输出：