Tkinter Widgets without Parent Master

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What are the consequences when omitting the parent master of a widget? Those two programs do not produce a visual difference:

import tkinter as t
import tkinter.ttk as ttk

w = t.Tk()
w.title("Label 1")

label_1 = ttk.Label(text="Label")
label_1.grid(row=0, column=0)

fenster.mainloop()

vs.

import tkinter as t
import tkinter.ttk as ttk

w = t.Tk()
w.title("Label 1")

label_1 = ttk.Label(w, text="Label")
label_1.grid(row=0, column=0)

fenster.mainloop()
tkinter-label python-3.x tkinter
1 Answers

When you ommit the master option it will use the root widget.
Which is the Tk() instance or in Tkinter the root widget '.'

You can get parent with winfo_parent() methode.

import tkinter as t
import tkinter.ttk as ttk

w = t.Tk()
w.title("Label 1")

label_1 = ttk.Label(text="Label")
label_1.grid(row=0, column=0)
print("parent =", label_1.winfo_parent())
w.mainloop()

Output:

parent = .
user_47727720
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