Kivy Label Text Variable, Perfect for interactive interfaces!--- Text alignment and wrapping ¶ The Label has halign and valign properties to control the alignment of its text. children assert self. py self. In this video I’ll show you how to update labels in your Kivy app based on user input. label_value[0] Lab Sizing and text content ¶ By default, the size of Label is not affected by text content and the text is not affected by the size. Once the 'searchforpart' method runs (as a response to hitting enter in search box), even though 'print (param)' prints 'text update', the label text isn't updated. kv to main. kv give your label and id and then in main. 'label_id'. boxlayout import BoxLayout from kivy. I'm trying to create a simple Kivy function that counts and updates the display in the label as either a variable or a variable that has been converted to string. Styled Label A styled label allows you to modify the appearance of text by changing its font size, color and other properties. Kivy - Bind Label Text To Variable (Python Only) Asked 10 years, 10 months ago Modified 4 years, 7 months ago Viewed 8k times In this video I’ll show you how to update labels in your Kivy app based on user input. 1 The frame is fit inside the root window. <id_text>` assert self. . See Kivy’s dependencies for the list of selectors. Copied from kivy. I’ve covered this before in the 9th Kivy crash course video, but here’s a quick write up of the basics. theme_cls. Like how would I have user input from python be made as the text of a label in kivy. All video and text tutorials are free. 5} This code is still not working here is the import in the python file for the kivymd class incase that is the problem from kivymd. window import Window from kivy. I'm creating a program that interacts with a server, this program is for employees to use on a mobile device, so I'm using Kivy, and I'm doing the GUI first. is it possible? i tried this: x =… Labels display any textual content, which can not be directly edited. 0, the rebind option has been introduced that will allow the automatic updating of the text when label is changed, provided it was enabled. width, None) and default is positioned on the left: When clicking on the button, although the label object property has changed to the second widget, the button text will not change because it is bound to the text property of the first label directly. I know that, in this example, I could just put the label text as a variable and change it from the code, but this is a very simp In ChooseProgScreen in . core. A button widget is then created, and placed to the right of the label. This tutorial covers how to add Kivy Label Widget to a Kivy Window & Kivy Label positioning. By default, the size of Label is not affected by text content and the text is not affected by the size. For this method, the name of the file and the app class is same and save the kv file with appclassname. text = x If you wanted to send a variable from . When you press one of the buttons, the print part works fine, and the global variable prints as the new string, but the SwitchScreen label still shows I need a help in KivyMD, I am trying to change the text of MDLabel of screen WELCOME, But Its showing blank. Learn how to bind a Python variable to a Kivy Label using properties, enabling dynamic updates to your UI based on variable changes. e. # main. kv, when the button is released, I call a method from the . I ve been banging my head pass 3 days with this problem. run () create and run the app; Kivy opens a window and shows the label. The problem is that inside the MainScreen Class i want to add some Label I'm trying to create a simple Kivy function that counts and updates the display in the label as either a variable or a variable that has been converted to string. I followed the instructions on the This also installs the minimum dependencies of Kivy. py file that sets the global variable to a new screen and prints it. py you could use a button to call a function. middle in self. Kivy is a library for building cross I have an issue when I try to update a label text during a for-loop. uix library: MDLabel (): This widget is used in KivyMD applications to add a label or to display texts as a label. However, by default the text image (texture) is only just large enough to contain the characters and is positioned in the center of the Label. The grid() method is used to specify the relative layout (position) of the label within its containing frame widget, similar to how tables in HTML work. 10. I can't figure out how to do this without calling a function from the widget. How to load kv file: There are 2-ways to load the . A (). 5, "center_y": . Setting this to True without an appropriately set size will lead to unexpected results. For example, after a update to the text, changing the cursor in the same clock frame will move it using the previous text and will likely end up in an incorrect position. To additionally install Kivy with audio/video support, install either kivy[base,media] or kivy[full]. Learn how to effectively use a text input from one screen as a label in another screen in Kivy. text import LabelBase from kivy. This article explores the various ways to add labels to a Kivy window, considering input as the Python code and the output as the visible label in the application’s GUI. So I am writting a program using the Kivy GUI and I really don't want to use a . It can render both ASCII and Unicode strings, allowing you to show titles, messages, and instructions in your GUI. Explore properties, methods, and examples. For example, this label’s size will be set to the text content (plus padding): However, they initially only show the text that is set in the Kivy file, and won't change unless a button is pressed. Python Programming tutorials from beginner to advanced on a massive variety of topics. py”. This guide will walk you through the necessary steps to achieve this functionality smoothly. Basically I have variable called 'SCOR Widgets Used: We need to import the below widgets using kivyMD. Also, uxPython guides you to be a good programmer using Python Kivy graphical user interface (GUI) development library. children # widgets can be accessed from deep in Hello I m very new to kivy python programming. ---This video is based on Within this menu, it currently reads "Front Card Label" where it should read the python variable ( current_card ["Front'] ) which is whatever state that was randomly selected in python code. (but this doesn't work) Label: text:root. root. ids. lang import Builder from kivy. 1 Within this menu, it currently reads "Front Card Label" where it should read the python variable ( current_card ["Front'] ) which is whatever state that was randomly selected in python code. By default, the size of Label is not affected by text content and the text is not affected by the size. kv. Below example creates a label using KV language. It helps make the text more readable and visually appealing. halign- The position where we want to put the I want to create a UI passing an argument to a part of my interface. I want to enter the date in the variable fuldate in to a label which is known as Date_lbl. load_string (""" Label: text: 'KV Lang Style I have an application in kivy that uses many labels. floatlayout import MDFloatLayout Hope you can get some answers from my updated post. kv file into code or Application By name convention method- While writing code we will make the App class. The next line creates a label widget holding a static text string. Sizing and text content ¶ By default, the size of Label is not affected by text content and the text is not affected by the size. text I know it isn't working this way because the properties of widgets are limited to the class scope - but when I try to make StoryScreen a class of the SettingsScreen in Python, Kivy won't open - when I try creating a global variable in the SettingsScreen class 16 I was wondering how I could change the text of a label made inside the Kivy language using Python. : Update properties of a kivy widget while running code) but they do not seem to fit my issue ex Kivy Label to display variable value Asked 6 years, 8 months ago Modified 6 years, 8 months ago Viewed 1k times In this video I'll show you how to update labels in your Kivy app based on user input. app import App class KvRuleWidget(BoxLayout): def on_touch_down(self, touch): print('We can get references to all the children using the ids dict. In 1. I realize that the answer may lie in binding “current_tex Hi guys. py to . There are similar entries (e. 2 I am making a text based game, and there is a point at which the game asks the user to input their surname. from kivy. I tried various ways from stack overflow to tackle this issue but it isnt even working, Learn how to use variables within Kivy's KV language effectively. The problem is that the text property of the MDLabel does not change as n increase or decrease, and always display the number one, even if n actually change correctly. In order to control sizing, you must specify text_size to constrain the text and/or bind size to texture_size to grow with the text. A simple example for showing how you can extend a Label to make it editable by adding a textinput to itself. Discover how to use a variable's value to dynamically update a label in your Kivy application across multiple screens. g. 58} MDButton: pos_hint: {"center_x However, they initially only show the text that is set in the Kivy file, and won't change unless a button is pressed. Perfect for interactive interfaces!--- My Kivy Language file has many font_size properties, all with same values, is there away where I can assign a variable in KV lang? Current KV file sample: #User ID Label: text: 'User I No the example I gave you is sending a variable from main. backgroundColor MDIcon: icon: "music_video" theme_font_name: "Custom" font_name: "MaterialSymbols" pos_hint: {"center_x": . I have worked out a way to save the name to a file, and load the name from the file, but I do not know how to save the text that has been input into a variable. This guide breaks down how to dynamically update a Label's text based on button events with This article explores the various ways to add labels to a Kivy window, considering input as the Python code and the output as the visible label in the application’s GUI. kv file but write it all in the python file. MDLabel (text, halign, theme_text_color, text_color, font_style) Parameters: text- The text we want to put on the label. app import MDApp KV = ''' MDScreen: md_bg_color: self. lang import Builder lblKVLang = Builder. metrics import sp from kivymd. Fortunately it’s pretty easy to update a label. I realize I can use a layout composed of buttons and labels that alter text, however for variable sentence length I don’t think this would be the cleanest solution as I need the “buttons” to shift position depending on sentence length. I am trying to get the label’s text in “EventWindow” to update when the variable “current_text” in the Event class in “scripts/events. I'm currently making an app using Kivy and I'm having some issues getting a kivy label to update when I update a variable that should be… Hi lovely people, I am trying to change the text of a label using a variable during the creation of a widget. label import Label from kivy. 7 and Kivy 1. ') # syntax is `self. In Kivy, the label widget is an object of Label class, defined in the "kivy. We need to set a Canvas and create a rectangle first. label" module. I would appreciate if someone could help me with this. MDLabel ¶ Class MDLabel inherited from the Label class but for MDLabel the text_size parameter is (self. Using Python 3. Method 1: Using the Kivy Label Widget This method involves utilizing the Kivy Label widget, which is the simplest way to add text to your Kivy application. For example, this label’s size will be set to the text content (plus padding): Changing the background color and text color of a Kivy Label is a little more complicated than changing the color of other widgets. bottom in self. A label is used to display the page heading, as a placeholder for the field name along with the input controls like text box, or just to render output message. ???????? Kivy Tutorial - Learn Kivy with Examples. Updating labels and other things based on user input is a fundamental part of building any app. Indicate whether the label should attempt to shorten its textual contents as much as possible if a size is given. py from kivy. build () returns the widget to display (a Label with text). com Title: How to Bind a Kivy Label Text to a Variable in PythonIntroduction:Kivy is an open-source Python library f <MyFloatLayout> MDLabel: text: root. point_label_text pos_hint: {"center_x": . Learn how to use labels in Kivy to display text and create user interfaces efficiently. I need the Label to show the variable immediately, as well as update automatically when it's changed. Is it possible to obtain their values from a list? e. Jan 27, 2026 · A Label is a widget used in Kivy to display text on the screen. As you can see I created several variables in my main app that contain color data, I then assigned the color property's of my kivy buttons to the variables, then saved all the variable in a dictionary with json, then in the beginning of my code I create an import class and imported the dictionary, I then assigned each of my variables to the Writing kv language strings within the same python file We have to use the built-in load_string function. I want to insert a text from a variable to a label which is made by me. uix. The problem is that inside the MainScreen Class i want to add some Label This tutorial discusses supporting the Arabic alphabet in Kivy in order to display text on the UI widgets that uses such alphabets such as Arabic and Persian. The textinput will follow the position/size/font attribute of the label. The valign property will have no effect and halign will only have an effect if your text has newlines; a single line of text will appear to Shortens the text to a single line according to the label options. To explain a bit differently, I'm trying to get the Kivy / : / Label / Text to present the python dictionary current_card ["Front"] variable. 9. This is defined within the same python file. Fortunately Download this code from https://codegive. <StoryScreen>: Label: text: firstname. Another Kivy question that I often see (particularly recently for some reason) is about using the Label widget - how to have text wrap automatically, or the opposite, how to have the label automatically grow to accommodate its text. This function operates on a text that has already been laid out because for markup, parts of text can have different size and options. For my code these “sentences” are going to be an item for use in a scrollable layout. i need to pass string variable from class method to kivy label text and i want to make some of the text bold. app import App from kivy. waic, rtmxcw, nbvf, hmg3ni, 9kdt, pc7qt, mwwx3l, caznt, yglv, 6fzhn,