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Learing material for Python programming language, Thesis of Computer Programming

University of Southeastern Philippines (USEP)Computer Programming

This learning module is for advance programming for second year college students.

Typology: Thesis

2020/2021

Uploaded on 04/21/2022

franz-natayada
franz-natayada 🇵🇭

4 documents

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Python Tkinter – Cheat Sheet
Basic Level
Widget (Grouping)
Tk.Frame, ttk.Frame
Ttk.LabelFrame
Tk.PanedWindow
Ttk.Notebook
Common Properties:
Purpose
Displays set of widgets as one unit
Frame but with border and title
Group widgets in re-sizable panes
Tabbed set of frames, only one visible at a time
background, foreground, width, height, borderwidth, text,
font, cursor, activeforeground, activebackground, image.
Specific Properties:
1- Scale: from_ , to. orient, resolution.
2- Radiobutton: variable, value.
3- Spinbox: from_ , to, textvariable.
4-Button: command.
5- Checkbutton: onvalue, offvalue, variable.
6- Combobox: textvariable, values.
7- Progressbar: orient, mode, step.
8- Text: wrap, xscrollcommand, yscrollcommand.
9- Scrollbar: orient, command.
Create Widgets
>>> widget_name= ttk.Label ( root, text = ‘Example Text’ )
Set Widget Properties
>>> widget_name.config ( text = ‘Example Text’ )
The most commonly used GUI programming toolkit for
Python.
How to import?
>>> import tkinter or from tkinter import *
Create Treeview
>>> treeview = ttk.Treeview ( root )
>>> treeview.pack ( )
>>> treeview.insert ( ‘ ‘, ‘item1’, text = ‘First item’)
>>> treeview.insert ( ‘ ‘, ‘item2’, text = ‘Second item’)
>>> treeview.cofig (height = 5, column = (‘Version’))
>>> treeview.column (‘Version’, width = 50, anchor = CENTER)
Create Cascading Menu
>>> root.option_add (‘*tearoff’, False)
>>> menubar = Menu (root)
>>> root.config (menu = menubar)
>>> file = Menu (menubar)
>>> edit= Menu (menubar)
>>> help_ = Menu (menubar)
>>> menubar.add_cascade (menu = file, label = ‘File’)
>>> menubar.add_cascade (menu = edit, label = ‘Edit’)
>>> menubar.add_cascade (menu = help_, label = ‘Help’)
>>> file.add_command (label = ‘New’, command = lambda: print(‘New
File’)
>>> file.add_separator ()
>>> file.entryconfig ( ‘New’, accelerator = ‘Ctrl + N’)
File Dialog
>>> from tkinter import filedialog
>>> filename = filedialog.askopenfile ( )
Color Chooser
>>> from tkinter import colorchooser
>>> colorchooser.askcolor ( initialcolor = ‘#FFFFFF’ )
Popup Message
>>> from tkinter import messagebox
>>> messagebox.showinfo( title = ‘Example’, message = ‘some text’ )
Widget (information)
Purpose
Tk.Label, ttk.Label
Display static text or image
Tk.Message
Display static multi line text
Ttk.Separator
Display a horizontal or vertical separator bar
Ttk.Progressbar
Show status of running operation
Ttk.Treeview
Display hierarchical collection of items
Application Main Window
How to instantiate main window of application?
>>> root = Tk ( )
Widgets
Import ‘generic’ widgets: >>> import tkinter
Import ‘styled’ widgets: >>> from tkinter import ttk
Widget (Interactive)
Purpose
Execute a command, function or task
Implements Top-level, pull-down and popup menus
Display popup or pull-down menu when activated
Creates a popup menu, and a button to display
Text entry (one line only)
Text entry (multiple lines)
On-Off, True-False selection
One or Multiple selections
Selection from a list of alternatives
Combined text field with a pop-down list
Moving slider for selecting numerical values
Note: Widgets with tk are generic whereas ttk are styled.

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Python Tkinter – Cheat Sheet

Basic Level

Widget (Grouping) Tk.Frame, ttk.Frame Ttk.LabelFrame Tk.PanedWindow Ttk.Notebook

Common Properties:

Purpose Displays set of widgets as one unit Frame but with border and title Group widgets in re-sizable panes Tabbed set of frames, only one visible at a time

background, foreground, width, height, borderwidth, text,

font, cursor, activeforeground, activebackground, image.

Specific Properties:

1- Scale: from_ , to. orient, resolution.

2- Radiobutton: variable, value.

3- Spinbox: from_ , to, textvariable.

4-Button: command.

5- Checkbutton: onvalue, offvalue, variable.

6- Combobox: textvariable, values.

7- Progressbar: orient, mode, step.

8- Text: wrap, xscrollcommand, yscrollcommand.

9- Scrollbar: orient, command.

Create Widgets

>>> widget_name= ttk.Label ( root, text = ‘Example Text’ )

Set Widget Properties

>>> widget_name.config ( text = ‘Example Text’ )

The most commonly used GUI programming toolkit for

Python.

How to import?

>>> import tkinter or from tkinter import *

Create Treeview

treeview = ttk.Treeview ( root ) treeview.pack ( ) treeview.insert ( ‘ ‘, ‘item1’, text = ‘First item’) treeview.insert ( ‘ ‘, ‘item2’, text = ‘Second item’) treeview.cofig (height = 5, column = (‘Version’)) treeview.column (‘Version’, width = 50, anchor = CENTER)

Create Cascading Menu

root.option_add (‘*tearoff’, False) menubar = Menu (root) root.config (menu = menubar) file = Menu (menubar) edit= Menu (menubar) help_ = Menu (menubar) menubar.add_cascade (menu = file, label = ‘File’) menubar.add_cascade (menu = edit, label = ‘Edit’) menubar.add_cascade (menu = help_, label = ‘Help’) file.add_command (label = ‘New’, command = lambda: print(‘New File’) file.add_separator () file.entryconfig ( ‘New’, accelerator = ‘Ctrl + N’)

File Dialog

from tkinter import filedialog filename = filedialog.askopenfile ( )

Color Chooser

from tkinter import colorchooser colorchooser.askcolor ( initialcolor = ‘#FFFFFF’ )

Popup Message

from tkinter import messagebox messagebox.showinfo( title = ‘Example’, message = ‘some text’ ) Widget (information) Purpose Tk.Label, ttk.Label Display static text or image Tk.Message Display static multi line text Ttk.Separator Display a horizontal or vertical separator bar Ttk.Progressbar Show status of running operation Ttk.Treeview Display hierarchical collection of items

Application Main Window

How to instantiate main window of application?

>>> root = Tk ( )

Widgets

Import ‘generic’ widgets: >>> import tkinter

Import ‘styled’ widgets: >>> from tkinter import ttk

Widget (Interactive) Purpose Ttk.Button, tk.Button Execute a command, function or task Tk.Menu Implements Top-level, pull-down and popup menus Ttk.Menubutton Display popup or pull-down menu when activated Tk.OptionMenu Creates a popup menu, and a button to display Tk.Entry, ttk.Entry Text entry (one line only) Tk.Text Text entry (multiple lines) Tk.Checkbutton, ttk.Checkbutton On-Off, True-False selection Tk.Radiobutton, ttk.Radiobutton One or Multiple selections Tk.Listbox Selection from a list of alternatives Ttk.Combobox Combined text field with a pop-down list Tk.Scale, ttk.Scale Moving slider for selecting numerical values Note: Widgets with tk are generic whereas ttk are styled.