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Ever wondered what language a sentence is written in?

With just a few lines of Python code, you can create a simple app that detects the language of any sentence you input. A Language Detector Using Python and CustomTkinter

In this article, I’ll walk you through how to build a language detector using the langdetect library and CustomTkinter for the graphical user interface (GUI).

Let’s dive in!

What Does the Code Do?

This project creates a small desktop application that allows you to enter a sentence and detect its language.

The language code (like ‘en’ for English, ‘fr’ for French) will be displayed as the output.

Importing Necessary Libraries

langdetect is a Python library that helps detect the language of a given text.

CustomTkinter is a modern and customizable version of the Tkinter library used for creating GUIs.

PIL (Python Imaging Library) is used to handle images in the application.

from langdetect import detect, DetectorFactory
from customtkinter import *
from PIL import Image

Creating the Main Application Class

We create a class LanguageDetector that inherits from CTk, which is the main window of our app.

The __init__ method is the constructor that initializes the window and its elements like the title, text entry, and buttons.

class LanguageDetector(CTk):
    def __init__(self):
        super().__init__()
        self.title("Language Detector")

Adding an Image

An image is loaded and displayed using CTkImage and CTkLabel.

This adds a nice visual element to our app.

        self.search_img = CTkImage(light_image=Image.open("search.png"), size=(250, 200))
        self.il = CTkLabel(self, image=self.search_img, text="")
        self.il.grid(row=0, column=0, pady=20, padx=20)

Creating a Text Entry

CTkEntry is used to create a text box where users can enter the sentence they want to analyze.

        self.text = CTkEntry(self, placeholder_text="Enter a sentence: ")
        self.text.grid(row=0, column=0, padx=20, pady=20)

Adding a Button

A button labeled “Detect Language” is added. When clicked, it triggers the detect method, which handles the language detection.

        self.gettext = CTkButton(self, text="Detect Language", command=self.detect)
        self.gettext.grid(row=1, column=0, pady=20)

Language Detection Logic

The detect method retrieves the text entered by the user, detects its language using the langdetect library, and displays the result.

    def detect(self):
        text = self.text.get()
        DetectorFactory.seed = 0
        detected_lang_code = detect(text)
        label = f"The language code is {detected_lang_code}"
        self.code_label = CTkLabel(self, text=label)
        self.code_label.grid(row=2, column=0, padx=20, pady=20)

Running the Application

Finally, an instance of the LanguageDetector class is created and the mainloop method is called to keep the app running.

app = LanguageDetector()
app.mainloop()

Full Source Code: Language Detector Using Python and CustomTkinter

from langdetect import detect, DetectorFactory
from customtkinter import *
from PIL import Image

class LanguageDetector(CTk):
    def __init__(self):
        # Call the constructor of the parent class (CTk) using super()
        super().__init__()
        self.title("Language Detector")
        
        # image
        self.search_img = CTkImage(light_image=Image.open("search.png"),size=(250,200))
        self.il = CTkLabel(self, image=self.search_img, text="")
        self.il.grid(row=0, column=0, pady=20, padx=20)
        # Create a CTkEntry
        self.text = CTkEntry(self, placeholder_text="Enter a sentence: ")
        self.text.grid(row=0, column=0, padx=20, pady=20)

        # Create a CTkButton
        self.gettext = CTkButton(self, text="Detect Language", command=self.detect)
        self.gettext.grid(row=1, column=0, pady=20)
        
        
    def detect(self):
        """Takes text as input and shows language code."""
        # getting the text
        text = self.text.get()
        DetectorFactory.seed = 0
        detected_lang_code = detect(text)
        label = f"The language code is {detected_lang_code}"
        # displaying the code
        self.code_label = CTkLabel(self, text=label)
        self.code_label.grid(row=2, column=0, padx=20, pady=20)
        
        
app = LanguageDetector()
app.mainloop()

Language Detector Using Python and CustomTkinter Language Detector Using Python and CustomTkinter Language Detector Using Python and CustomTkinter