Real-Time Translation App Using Python

Last Updated : 2 Sep, 2025

In this article, we’ll walk through creating a real-time translation application in Python. Using the Deep Translator library as the translation engine and Tkinter for the graphical user interface (GUI), we can build a simple yet powerful app.

Below is a step by step implementation of the app:

Step 1: Install Necessary Libraries

We need two libraries:

pip install deep-translator
pip install tk

  • deep-translator: Provides access to multiple translation engines including Google Translate.
  • tkinter: Python’s built-in library for GUI development.

Step 2: Create app.py and import required libraries

This app will have a single app.py file which will contain all the code. Add the code below to import the required libraries to build the application:

Python 
from tkinter import *
from tkinter import ttk
from deep_translator import GoogleTranslator
  • tkinter: Builds the GUI.
  • ttk: Adds styled widgets like the dropdown menu.
  • GoogleTranslator: Handles translation.

Step 3: Setting up the Tkinter Window

Here, the code create a Tkinter window ('root') with dimensions 1100x320, set it to be non-resizable, give it a pink background, and assign the title 'Real-time translator'.

Python 
root = Tk()
root.geometry('1100x320')
root.resizable(0, 0)
root['bg'] = 'pink'
root.title('Real-time Translator')

Step 4: Creating the GUI

We add labels, input fields, output text area, and a dropdown for selecting the target language.

Python 
Label(root, text="Language Translator", font="Arial 20 bold").pack()

Label(root, text="Enter Text", font='arial 13 bold', bg='white smoke').place(x=165, y=90)
Input_text = Entry(root, width=60)
Input_text.place(x=30, y=130)

Label(root, text="Output", font='arial 13 bold', bg='white smoke').place(x=780, y=90)
Output_text = Text(root, font='arial 10', height=5, wrap=WORD, padx=5, pady=5, width=50)
Output_text.place(x=600, y=130)

# Supported languages
languages = ['english', 'french', 'german', 'spanish', 'hindi', 'italian', 'japanese']
dest_lang = ttk.Combobox(root, values=languages, width=22)
dest_lang.place(x=130, y=180)
dest_lang.set('Choose Language')

Step 5: Translation Function

Python 
def Translate():
    try:
        translation = GoogleTranslator(source='auto', target=dest_lang.get()).translate(Input_text.get())
        Output_text.delete(1.0, END)
        Output_text.insert(END, translation)
    except Exception as e:
        print(f"Translation error: {e}")
  • Detects source language automatically.
  • Translates to the selected target language.
  • Displays the result in the output box.

Step 6: Button for Translation

This code creates a Tkinter button for translation with the label 'Translate', styled in Arial font. It triggers the 'Translate' function on click, with an orange background and green active background, positioned at (445, 180) in the window.

Python 
trans_btn = Button(root, text='Translate', font='arial 12 bold', pady=5,
                   command=Translate, bg='orange', activebackground='green')
trans_btn.place(x=445, y=180)

Step 7: Run Tkinter main loop

This keeps the window running until the user closes it.

Python 
root.mainloop()

Complete Code

Python 
from tkinter import *
from tkinter import ttk
from deep_translator import GoogleTranslator

# Create main window
root = Tk()
root.geometry('1100x320')
root.resizable(0, 0)
root['bg'] = 'pink'
root.title('Real-time Translator')

# Labels and input/output fields
Label(root, text="Language Translator", font="Arial 20 bold").pack()

Label(root, text="Enter Text", font='arial 13 bold', bg='white smoke').place(x=165, y=90)
Input_text = Entry(root, width=60)
Input_text.place(x=30, y=130)

Label(root, text="Output", font='arial 13 bold', bg='white smoke').place(x=780, y=90)
Output_text = Text(root, font='arial 10', height=5, wrap=WORD, padx=5, pady=5, width=50)
Output_text.place(x=600, y=130)

# Supported languages
languages = ['english', 'french', 'german', 'spanish', 'hindi', 'italian', 'japanese']
dest_lang = ttk.Combobox(root, values=languages, width=22)
dest_lang.place(x=130, y=180)
dest_lang.set('Choose Language')

# Translation function
def Translate():
    try:
        translation = GoogleTranslator(source='auto', target=dest_lang.get()).translate(Input_text.get())
        Output_text.delete(1.0, END)
        Output_text.insert(END, translation)
    except Exception as e:
        print(f"Translation error: {e}")

# Translate button
trans_btn = Button(root, text='Translate', font='arial 12 bold', pady=5,
                   command=Translate, bg='orange', activebackground='green')
trans_btn.place(x=445, y=180)

# Run the app
root.mainloop()

Output:

real_time_translationg_app_using_python
Output of a demo translation
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