place()-Methode in Tkinter

Syntax:

widget.place(relx = 0.5, rely = 0.5, anchor = CENTER)

The Place geometry manager is the simplest of the three general geometry managers provided in Tkinter. It allows you explicitly set the position and size of a window, either in absolute terms, or relative to another window. You can access the place manager through the place() method which is available for all standard widgets. It is usually not a good idea to use place() for ordinary window and dialog layouts; its simply too much work to get things working as they should. Use the pack() or grid() managers for such purposes. 

Note : place() method can be used with grid() method as well as with pack() method.
When we use pack() or grid() managers, then it is very easy to put two different widgets separate to each other but putting one of them inside other is a bit difficult. But this can easily be achieved by place() method. In place() method, we can use in_ option to put one widget inside other.