如何在 tkinter 中找出小部件的长度和高度

.winfo_height()这个（高度）和.winfo_width()（宽度）有一个功能

import tkinter as tk


def func():
    x = button_place.winfo_width()
    y = button_place.winfo_height()
    print(x, y)


root = tk.Tk()
root.geometry("600x500")
button_place = tk.Button(root, text='какой то текст', font='Times 15', command=func)
button_place.place(w=400, h=200)

root.mainloop()

结论：

400 200

更新

import tkinter as tk


class Main(tk.Tk):
    def __init__(self):

        super().__init__()
        self.geometry("800x800")
        self.button = tk.Button(self, text='какой то текст', font='Times 15')
        self.button.place(x=8, y=8, w=200, h=100)
        self.update()
        self.func()

    def func(self):
        x = self.button.winfo_width()
        y = self.button.winfo_height()
        but = tk.Button(self, text='еще какой то текст')
        but.place(x=8 + x, y=8 + y, w=200, h=100)


root = Main()
root.mainloop()