Essential Books

Geometry Managers

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Tkinter has three mechanisms for geometry management: place, pack, and grid.

The place manager uses absolute pixel coordinates.

The pack manager places widgets into one of 4 sides. New widgets are placed next to existing widgets.

The grid manager places widgets into a grid similar to a dynamically resizing spreadsheet.

Place

The most common keyword arguments for widget.place are as follows:

A code example using place: 

class PlaceExample(Frame):
    def __init__(self,master):
        Frame.__init__(self,master)
        self.grid()
        top_text=Label(master,text="This is on top at the origin")
        #top_text.pack()
        top_text.place(x=0,y=0,height=50,width=200)
        bottom_right_text=Label(master,text="This is at position 200,400")
        #top_text.pack()
        bottom_right_text.place(x=200,y=400,height=50,width=200)
# Spawn Window
if __name__=="__main__":
    root=Tk()
    place_frame=PlaceExample(root)
    place_frame.mainloop()

Pack

widget.pack can take the following keyword arguments:

Grid

The most commonly used keyword arguments of widget.grid are as follows:

The rows and columns are zero indexed. Rows increase going down, and columns increase going right.

A code example using grid: 

from tkinter import *

class GridExample(Frame):
    def __init__(self,master):
        Frame.__init__(self,master)
        self.grid()
        top_text=Label(self,text="This text appears on top left")
        top_text.grid() # Default position 0, 0
        bottom_text=Label(self,text="This text appears on bottom left")
        bottom_text.grid() # Default position 1, 0
        right_text=Label(self,text="This text appears on the right and spans both rows",
                         wraplength=100)
        # Position is 0,1
        # Rowspan means actual position is [0-1],1
        right_text.grid(row=0,column=1,rowspan=2)

# Spawn Window
if __name__=="__main__":
    root=Tk()
    grid_frame=GridExample(root)
    grid_frame.mainloop()

Never mix pack and grid within the same frame! Doing so will lead to application deadlock!

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tkinter:
* tkinter
* Geometry Managers
* A minimal tkinter Application
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189 Raise Custom Errors Exceptions
190 Using loops within functions
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