It has 89 code examples. Is this even possible? Or is there a way to link the OptionMenu to call a. import the module tkinter. [QUOTE=xleon;1502553]Thanks for answer. In this post I will be outlining the Tkinter Entry widget and the various ways you can use it. Capturing click event of checkbox and display the value of the variable import tkinter as tk my_w = tk. We can place only text items in the Listbox and all text items contain the same font and color. Inside menu, we have to enter where we want to put it. Tkinter Variable Classes Some widgets (like text entry widgets, radio buttons and so on) can be connected directly to application variables by using special options: variable, textvariable, onvalue, offvalue, and value. OptionMenu¶ The OptionMenu creates a menu button of options. 鱼c笔记——Python 的 GUI 编程(十):Tkinter 的组件 Menu、Menubutton 和 OptionMenu 02-11 阅读数 4956 Tkinter提供了一个组件Menu用来实现顶级菜单,下拉菜单和弹出菜单。. Overrides: Variable. tkinter panedwindow (1) 私は現在2つのOptionMenuを作成しようとしています。2 OptionMenuのOptionMenuは最初のOptionMenu選択された内容に基づいて動的に更新されます。 例えば、 OptionMenu_Aをリストで作りたい [North America, Europe, Asia]. __init__(parent) self. Tkinter supports a variety of widgets to make GUI more and more attractive and functional. Updating a label's text is a little convoluted - we can't simply update the text using a normal Python string. The button can only display text in a single font. Related course: Python Desktop Apps with Tkinter; Tkinter dropdown example. But, after looking through the other tests in this suite, I saw that globalgetvar gave me what I wanted. optionMenu is undoable, queryable, and editable. The default is 20. Command is where you can pass functions, but here we're going to pass a lambda function instead, which creates a quick throwaway function, using the parameters we've set. \$\begingroup\$ I don't really work with tkinter so I'm not in the position to give you suggestions on that (it's also something comments are not meant for). You can vote up the examples you like or vote down the ones you don't like. If you continue browsing the site, you agree to the use of cookies on this website. Therefore, it is a good idea to initialize all instance variables in the constructor to make sure that memory has been allocated for them, and. constants, and tk. When the button is pressed, Tkinter automatically calls that function or method. Sample code illustrates each element. This is a. Tkinter Tkinter Buttons The Button widget is a standard Tkinter widget, which is used for various kinds of buttons. Tkinter Radio Buttons A radio button, sometimes called option button, is a graphical user interface element of Tkinter, which allows the user to choose (exactly) one of a predefined set of options. Tkinter supports dropdown menus. In this part of the Tkinter tutorial, we have presented several Tkinter widgets. I am using Python 3. _setit taken from open source projects. Python Tkinter Listbox. Bonsoir, C'est la première fois que j'essaye d'utiliser tkinter (vous avez très certainement déjà eu l'occasion de le remarquer avec mon post précédent ^^) du coup je ne savais pas que mainloop() est une boucle infinie mais maintenant que vous le dite ça me parait logique (c'est analogue au C, non ?). Python coding helps you with things you do every day, like math homework. 0, END) will actually clear the whole text area. Is there a particular resource in the wiki I should look at for figuring out how to solve this current tkinter problem?. Create your free Platform account to download our ready-to-use ActivePython or customize Python with any packages you require. 1 LTS IDE : PyCharm 2018. The core functionality provides ways to create three m. Michael Lange Hi Pavel, the "menu" key is created in Tkinter's OptionMenu class to give us access to the Menu subwidget; optionmenu["menu"] is equivalent with optionmenu. Waits for the given Tkinter variable to change. class NewMenuDemo(Frame): # an extended frame. Get selected value from Listbox. tix (Tk Interface Extension) module provides an additional rich set of widgets. Graphical User Interfaces with Tk¶. To access the value of the variable configuration option you need to use one of the following: self. class tkinter. In Tkinter, when you create a widget (say a tkButton), you have to specify the parent (the first argument). This is a. [/QUOTE] When you work with Tkinter, don't hesitate to use Pmw. OptionMenu(). This connection works both ways: if the variable changes for any reason, the widget it's connected to will be updated to reflect the new value. As a result, we need to use a wrapper class for these variables. The first line imports all of the functions and variables from the Tkinter package. It is designed for readers who are familiar with Python and who need to develop applications with Graphical User Interfaces (GUIs). ttk version. from tkinter import * master = Tk(). But making it with TK is a bit hard. We use cookies for various purposes including analytics. and should send the value from the Entry instead of "5" (links to using get to read an entry and callbacks for a button click. The following are code examples for showing how to use tkinter. OK, I Understand. In Python 3, tkinter is still available, but the import names changed. (2 replies) I would like to link the contents of three OptionMenu lists. Then we defined a function named main() on line # 2. So it is portable to different OS and for the most of methods are already packages available. Tkinter는 파이썬에 내장되어있는 GUI만들기 패키지이다. parent = parent self. ttk modules. They are extracted from open source Python projects. This command may be used to invoke various operations. Normally, a checkbutton's associated control variable will be set to 1 when it is set (on). Ich versuche, den Code hier zu ändern, damit der Benutzer die aus den optionmenus ausgewählten Elemente bestätigen kann. En règle générale, les variables qui sont accédées à plusieurs endroits du programme sont stockées dans un dictionnaire, de manière à n'avoir finalement qu'une seule variable globale. Python; Download; Community; JS Tensorflow. The local event loop is terminated when the variable is updated (setting it to it's current value also counts). Compared to PyQT and wxPython, Tkinter has only a small amount of widgets such as a Button, Label, Checkbutton, Radiobutton, Listbox, Scrollbox, Progressbar and a few others. System is Windows 8. Now you will get to know all the core Tkinter widgets. TKinter numbers lines starting at 1, for some strange reason. TkInter is the standard GUI library for Python. sample method. When I import a file, it creates new rows but I need to then know which OptionMenu (i. below is the code I have to date. pack(side=Tkinter. It provides a robust and platform independent windowing toolkit, that is available to Python programmers using the tkinter package, and its extension, the tkinter. Tkinter Radio Buttons A radio button, sometimes called option button, is a graphical user interface element of Tkinter, which allows the user to choose (exactly) one of a predefined set of options. Construct a string variable. listbox python python 3. It waiting for events to happen. This command may be used to invoke various operations. pack() mainloop(). El método trace() se emplea para "detectar" cuando una variable es leída, cambia de valor o es borrada: widget. your username. Normally this variable is an IntVar, and 0 means cleared and 1 means set, but see the offvalue and onvalue options above. Python - Tkinter - How to get the value from a dropdown option and pass to another function (Python) - Codedump. class tkinter. Create a GUI in Python using tkinter To start, I’ll share the complete code that you can paste into Python in order to create the tkinter GUI. Dictionary:. Python, tkinter学习, , 阅读目录Menu菜单控件Menubutton菜单按钮控件OptionMenu选项菜单 Canvas画布控件 编程知识 购物 网址 新闻 笑话 | 软件 日历 阅读 图书馆 China. This is similar to your standard combobox on your operating system. Scrollbar(F1) L = Tkinter. (5 replies) Hello, I'm trying to bind an event to the changes made to an OptionMenu. geometry("500x500") # Size of the window. This blog on Tkinter Tutorial will explain what is Tkinter and how you can develop cool Graphical User Interface (GUI) In Python using Tkinter. The OptionMenu class is a helper class that creates a popup menu, and a button to display it. An option menu displays a frame containing a label and a button. The following are code examples for showing how to use Tkinter. title(title_of_the_window). It was a fantastic learning experienced and I feel much more comfortable with pandas and p. If we want to have a tabbed interface, we have now looked at how the Notebook widget allows us to display multiple frames in a window using tabs and we can assign each one a label to display in its tab. js 下拉列表筛选 ugui 下拉列表 PtrFrameLayou实现下拉列表 QT 下拉列表. It is working but I had to add the last line to get it to display the arrow image and for the OptionMenu to function. The example below creates a Tkinter window with a combobox. La variable tkinter prend la valeur initiale qu'affichera ton menu, et la liste (mais ça peut être un tuple) contient tous les choix de ton menu. Python Tkinter Radiobutton. Tkinter is a Python module which is used to develop GUI (Graphical User Interface). This is similar to your standard combobox on your operating system. Contribute to python/cpython development by creating an account on GitHub. The widget is called OptionMenu and the parameters you need are: frame, tk variable and a dictionary with choices. They are extracted from open source Python projects. VALUE is an optional value (defaults to "") NAME is an optional Tcl name (defaults to PY_VARnum). parent = parent self. import Tkinter F1 = Tkinter. 1 LTS IDE : PyCharm 2018. Now I have dictionary with 30 key-value pairs how can I populate them as options in OptionMenu. System is Windows 8. Menu도 추가해 봤다. You can vote up the examples you like or vote down the ones you don't like. Python - Tkinter Menu - The goal of this widget is to allow us to create all kinds of menus that can be used by our applications. Welcome! Log into your account. It's only a small appendix to Tkinter, but very useful. For IntVar, it’s an integer. And I am trying to make a drop down menu which will have some options (eg 4 options). To create an option menu, call the OptionMenu class constructor, and pass in the variable and a list of options. 0 means Line 1, Column 0. OptionMenu() - single item selection megawidget Inherits Pmw. This page also gives you a list of other methods available to each Variable. Tkinter provides classes which allow the display, positioning and control of widgets. The tables here give you the core. set("one") # default value w = OptionMenu(master, variable, "one", "two", "three") w. i am new to Python. class tkinter. A bible for Tkinter programming is the book by John Grayson (Python and Tkinter programming): he uses Pmw all … Jump to Post. If you cannot find the answer using Google or the search at Stack Overflow , maybe consider asking a new question there on Stack Overflow (also check the How to Ask page there. Attach any commands via the -cc/changedCommand flag. They both display in a similar manner to a drop-down menu, or select menu, from HTML. This website uses cookies to ensure you get the best experience on our website. from Tkinter import * master = Tk() variable = StringVar(master) variable. Active 1 year, Instead of tracing the variable,. 1 LTS IDE : PyCharm 2018. Python, tkinter学习, , 阅读目录Menu菜单控件Menubutton菜单按钮控件OptionMenu选项菜单 Canvas画布控件 编程知识 购物 网址 新闻 笑话 | 软件 日历 阅读 图书馆 China. The Listbox widget is used to display the list items to the user. TclError: bad menu entry. I had a read about classes, def, self, master, *args, **kwargs, __init__ and roots. Now, let's explore all the other core Tkinter widgets. When a user clicks RUN, an authentication Toplevel pops, wherein the user enters credentials, clicks OK, and the application creates a connection instance from those credentials. Mehr über Python TKinter Dynamic OptionMenu. DoubleVar() pour un variable «réelle» et Tkinter. However, I get enought code to create my tkinter GUI and choose the sheet, but I cant Transfer this sheetname out of the tkinter setup. I cannot get the correct row number for each OptionMenu. set("one") # default value w = OptionMenu(master, variable, "one", "two", "three") w. docbour a écrit : Débutant en Python, mon premier programme avec Tkinter bloque sur la récupération d'une variable d'un champ radio button dans une autre fenetre type Label. If you cannot find the answer using Google or the search at Stack Overflow , maybe consider asking a new question there on Stack Overflow (also check the How to Ask page there. Initialize the window manager with the tkinter. A dejanews search of the tcl newsgroup suggested putting a write trace on the variable being set by the optionMenu; how can I do this in python? Thanks for any suggestions! --. insert('end', 'blah') and you get a TclError: _tkinter. Now, let's explore all the other core Tkinter widgets. in C:\Program Files\Python27\Lib\idlelib. I have a tkinter GUI in which a user needs to authenticate against some system. It is an ideal material for those who already know basics of the Python language and want to learn about GUI programming. from Tkinter import * master = Tk() variable = StringVar(master) variable. If you want zero or more options to be clickable, you can use a checkbox. PopupMenu¶ The PopupMenu widget can be used as a replacement of the tk_popup command. Most of the Tkinter widgets are given here. x tkinter optionmenu По умолчанию и выберите первый элемент в списке Tkinter Я хочу автоматически выбрать первый элемент в списке. [code]from tkinter import * from tkinter import ttk # also import the themed tkinter for good looking widgets (not obligatory) class Wid. Radio button bar: 18. from tkinter import * master = Tk(). Our Tkinter tutorial is designed for beginners and professionals. OptionMenu(). onvalue=1 mean the variable c_v1 will get value 1 when checkbutton is clicked. __getitem__(self, name) __init__(self, master, variable, value, *values, **kwargs). Caltech/LEAD CS: Summer 2012 Tkinter Widgets So far have spent a lot of time with the Tkinter Canvas widget • Very good for drawing simple graphics, as long as they’re lines, circles, ovals, rectangles, etc. pack() mainloop() 效果如下图: 单击one或者右边的button,就会弹出一个选择列表,里面是我们传给OptionMenu的选项列表,我们选择其中任意一个后. It imports all the methods, classes, and attributes of tkinter module into the current workspace. How do I make it become the second on creation? Because I am adding entries to the window after user types in rows and columns, it also seems to be a bad idea to let user adjust the window manually, as the window will not be automatically resized as shown in the picture 3 but become picture 4. The widget is called OptionMenu and the parameters you need are: frame, tk variable and a dictionary with choices. Note that the. Hi, I`m trying to print a variable from an option menu into a labels text string without effecting its value or the values of other variables and am stuck. Daniel Liang This quiz is for students to practice. Python - Tkinter Radiobutton - This widget implements a multiple-choice button, which is a way to offer many possible selections to the user and lets user choose only one of them. See explanation of Tkinter window - Tkinter top level window. root, variable = myvar). class tkinter. (2 replies) I would like to link the contents of three OptionMenu lists. Learn Python GUI programming with Tkinter as you develop 9+ real programs from scratch. Tkinter OptionMenu Example app is the parent of the created option menu, variable is the initial text variable that has tk. Tkinter GUI Application Development Blueprints. このBooleanVarは、Variable クラスのサブクラスです。 ウィジェットの variable オプションに渡すことによって、そのウィジェットと関連付けることができます。 Variable クラスは、set() と get() メソッドを持ち、これらのメソッドで値の設定・取得を行います。. If you want some more Tkinter project ideas and tutorials, I've written an article on 8 Fun Python Tkinter Project Ideas. When one is selected, a button will run a function that then finds that object and displays more information about it. Contribute to python/cpython development by creating an account on GitHub. When a button is pressed, Tkinter calls the associated function or method. Mehr auf tkinter optionmenu erste Option verschwindet. El segundo argumento indica la función que será llamada cuando se. You can vote up the examples you like or vote down the ones you don't like. See how to use LabelFrame - Tkinter labelframe widget This snippet creates two radio buttons, The first parameter passed in Radiobutton is parent widget, Here it is radioGroup, the second parameter is a variable name, variable name should be same for all radio buttons in the same group so that only one can be selected at a time, here it is gender, and last parameter is value, it tells what. function and that you use a local variable u for your your interface Kindly Michael P. Tkinter is by no means not the only GUI package, alternative GUI packages such as PyQT and wxPython are commonly used. By Brendan Scott. We can place only text items in the Listbox and all text items contain the same font and color. Python Forums on Bytes. Python3 tkinter基础 OptionMenu 点击按钮,出现单选的下拉列表的更多相关文章. colorB = tk. Salut, En fait l'objet OptionMenu est associé à 2 objets: une variable tkinter StringVar et une liste (créer de manière directe ou indirecte pour la liste). Label is used to insert some objects into the window. set("one") # default value w = OptionMenu(master, variable, "one", "two", "three") w. This is similar to your standard combobox on your operating system. import Tkinter F1 = Tkinter. The Option Menu doesn’t have it’s own callback of it’s own - Example code : Note the use of Partial to get round the lack of callback arguments on the trace function. Tkinter OptionMenu Example app is the parent of the created option menu, variable is the initial text variable that has tk. tkinter events and mainloop() >> How to set the background colour of a Python tkinter window >> Setting the Size of a tkinter Window >> How to set the location of a Python tkinter window >> Creating a fixed size Python tkinter window >> How to place a Python tkinter window in the center of the screen >> Introduction to the tkinter Label widget >>. i am new to Python. Each Tkinter Variable has a get() and set() method so you can read and change with the Variable's value. from tkinter import* master=Tk() file=StringVar(master) file. It is used to get the currently selected option from OptionMenu or to set current value for the menu. 2 at the moment. The only kinds of variables for which this works are variables that are subclassed from a class called Variable, defined in the Tkinter module. "command" is there to tell tk what to insert into the menu; try: optionmenu["menu"]. interfaz gráfica de ejemplo de Tkinter con Python. I'm mentioning this because it's one of the. The Radiobutton widget is used to implement one-of-many selection in the python application. The issue I've run into though is I'm creating a GUI (Using Tkinter with Python 2. If you are confused, then I highly suggest you watch the video as well, since I show how the grouping of the 3 lines of object creation, adding options, then appending to the main menu sort of simplifies the process. Python, tkinter学习, , 阅读目录Menu菜单控件Menubutton菜单按钮控件OptionMenu选项菜单 Canvas画布控件 编程知识 购物 网址 新闻 笑话 | 软件 日历 阅读 图书馆 China. IntVar(master) options = {1:"one",2:"two"} and wanted to display the values but assign the key to variable. countryMenu and stateMenu, and the corresponding variables continentVar, countryVar and stateVar is a good habit to get: you'll make your programs far more readable and maintainable. They both display in a similar manner to a drop-down menu, or select menu, from HTML. E x p e r i e n c e. Python with tkinter outputs the fastest and easiest way to create the GUI applications. Welcome back everyone, this video is about creating option menus, or dropdown menus, in TKinter. When you create the widget you are providing values from the list widget, but not the list itself. Python GUI Programming, Python is a scripting language, In this post, you'll learn how to build a GUI with python using the Tkinter GUI toolkit. Python - Tkinter Radiobutton - This widget implements a multiple-choice button, which is a way to offer many possible selections to the user and lets user choose only one of them. This book will help you master the art of GUI programming. Simply speaking, it is Tk class's. Since Python is a dnamically typed language, any variable can be assigned any value, regardless of its previous type. The optionmenu command creates a new Tcl command whose name is pathName. Tkinter této výhody využívá (a nazývá ji sledováním (tracing)) k provádění daných funkcí při změnách příslušných proměnných. Это вопрос к моему вопросу здесь. Tk() method and assign it to a variable window. I built a GUI tool that takes excel files and outputs a finished report to help automate a report at work. 这系列教程完全以代码的形式来写的,目标是:读者看代码和注释就可以理解代码的意思。. They are extracted from open source Python projects. Noobie here! My code is not working for whatever reason. The tables here give you the core words, built-ins, standard library functions, and operators that you’ll use most when you’re coding with Python. Is this even possible? Or is there a way to link the OptionMenu to call a. Python will serve you well for years to come. Sample code illustrates each element. Tkinter의 몇 가지 component를 이용하여 간단한 UI를 구성해 보았다. It could only display 20 characters in the entry box, therefore, you need to use arrow keys to display the rest of the line if the text line has more than 20 characters. Variables are not declared in Python. It provides a robust and platform independent windowing toolkit, that is available to Python programmers using the tkinter package, and its extension, the tkinter. Still trying to get my head around the whole thing. It imports all the methods, classes, and attributes of tkinter module into the current workspace. button(command) The method Erase text, delete Entry, and destroy the widget() through Button(command) through default geometry setting. Notice that Tkinter is spelled out using all lower-case letters. I extract the audio from the video, graph the loudness over the video, and look for the referee's whistle (break the audio into segments, do FFTs to get the frequency, look for a whistle signature, play the video/audio segment with whistle for verification. For each widget, it's possible to bind Python functions and methods to an event. tkinter documentation: The Tkinter Entry Widget. Frame(width, height, color) The Frame width, height, and background color is created. Python Research Centre. Return value. Welcome back everyone, this video is about creating option menus, or dropdown menus, in TKinter. The get method returns the current value of the variable, as a Python object. variable: The control variable that this radiobutton shares with the other radiobuttons in the group. chkExample. your password. This is similar to your standard combobox on your operating system. tix and the tkinter. The actual value is retrieved with the get() method, which takes the index of the item. Let us get right into it then! Firstly, import relevant libraries. When the user clicks Ok after selection, the selected option. I've found some examples but am unsure about how to use data entry text as a variable in Python. D:\GUI-Registration-Form-Using-Tkinter>python __main__. Graphical User Interfaces with Tk¶. Therefore, it is a good idea to initialize all instance variables in the constructor to make sure that memory has been allocated for them, and. Each Tkinter Variable has a get() and set() method so you can read and change with the Variable's value. Tkinter OptionMenu: width of. It is working but I had to add the last line to get it to display the arrow image and for the OptionMenu to function. The widget is called OptionMenu and the parameters you need are: frame, tk variable and a dictionary with choices. which row has been clicked on) to create the 'List' or 'Min/Max' boxes next to that particular row. In Python 3 the naming and organization was improved. Les petits programmes qui suivent sont tous fonctionnels. The Tkinter Scale Widget The Scale widget allows the user to select a numerical value by moving a “slider” knob along a scale. The get method returns the current value of the variable, as a Python object. 0, END) will actually clear the whole text area. This connection works both ways: if the variable changes for any reason, the widget it's connected to will be updated to reflect the new value. • It contains various tools to create such types of applications. Mehr über Python TKinter Dynamic OptionMenu. The menu attribute returns an instance of a Menu class. i am new to Python. You can control the minimum and maximum values, as well as the resolution. Python provides the standard library Tkinter for creating the graphical user interface for desktop based applications. Mutable data structures are modified if you use a variable to modify the data structure object itselfbut not if you reassign that variable to a new data structure object! This means that if you pass a data structure into a function, modifying the data structure within the function modifies the original data structure!. Firstly you have put the last part at the wrong place (from #assign variable x to return values), this will be run through at the start, but not after the ok button is clicked, so x will always equal 'Select day' (thus why you get more printed when you run it), you should put this inside a function to be called in ok(), or in ok() itself:. En règle générale, les variables qui sont accédées à plusieurs endroits du programme sont stockées dans un dictionnaire, de manière à n'avoir finalement qu'une seule variable globale. Tkinter is a Python module which is used to develop GUI (Graphical User Interface). By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. The menu attribute returns an instance of a Menu class. This method enters a local event loop, so other parts of the application will still be responsive. Patrick Fay This script was part of a project to find highlights (meta-data) in my kids soccer game videos. This is similar to your standard combobox on your operating system. Wenn der Benutzer auf die Schaltfläche "Senden" klickt, sollte ein Meldungsfeld die Eingabeaufforderung öffnen. Tkinter is used as the Python GUI toolkit in our code. Python Forums on Bytes. Tkinter provides a mechanism to let the programmer deal with events. For instance, if you do not need to change the content or attributes of a widget after its instantiation, do not create a class-wide instance of the widget. The Python programming language. I had a read about classes, def, self, master, *args, **kwargs, __init__ and roots. This page also gives you a list of other methods available to each Variable. This book will help you master the art of GUI programming. Tkinter is by no means not the only GUI package, alternative GUI packages such as PyQT and wxPython are commonly used. I can print the feature class name and then dynamically enter a field name with the TKinter data entry msgbox. Scrollbar(F1) L = Tkinter. Use OptionMenu Widget. _setit taken from open source projects. Patrick Fay This script was part of a project to find highlights (meta-data) in my kids soccer game videos. Updating an OptionMenu every time the text file it reads from is updated (Tkinter) I currently have a program that reads in values for an OptionMenu from a text file. Dies ist eine Nachfolge zu meiner Frage hier. You must choose the appropriate Variable for the values you plan to work with, and this table shows you which Variables you have available:. Les petits programmes qui suivent sont tous fonctionnels. The Tk toolkit can use this feature, called tracing, to update certain widgets when an associated variable is modified. For variable width fonts, this is based on the width of the zero character (0). They are extracted from open source Python projects. This can be either an IntVar or a StringVar. This page also gives you a list of other methods available to each Variable. The way you select variables in your program can considerably affect the speed of the execution of your program. Radio buttons can contain text or images. However, I get enought code to create my tkinter GUI and choose the sheet, but I cant Transfer this sheetname out of the tkinter setup. Although the standard Tk library has many useful widgets, they are far from complete. class tkinter. Button(self. Tkinter OptionMenu Example app is the parent of the created option menu, variable is the initial text variable that has tk. When one is selected, a button will run a function that then finds that object and displays more information about it. A Radiobutton lets you put buttons together, so that only one of them can be clicked. Here "Red" is set as current value. This method creates a blank window with close, maximize and minimize buttons. The e-book has 200 pages. Get value from Entry : TextField Entry « GUI Tk « Python Get value from Entry. In Python 2 the main package is Tkinter and there are additional packages like the toolkit ttk and constants Tkconstants. We use cookies for various purposes including analytics. Tkinter OptionMenu Example. It's only a small appendix to Tkinter, but very useful. You must choose the appropriate Variable for the values you plan to work with, and this table shows you which Variables you have available:. geometry("500x500") # Size of the window. Each Tkinter Variable has a get() and set() method so you can read and change with the Variable's value. MegaWidget Description.