Sai A Sai A
Updated date Jan 12, 2024
In this blog, we will explore how to create a basic text editor in Python. Learn how to take user input, read and display text, and even edit existing content. This beginner-friendly blog offers a hands-on experience in handling files and designing a user interface.

Introduction:

In the programming world, text editors serve as fundamental tools for developers and enthusiasts alike. While there are numerous sophisticated text editors available, creating a basic one from scratch can be a rewarding endeavor, helping you understand the core concepts of file handling and user interface design in Python.

In this blog, we will guide you through the process of building a simple text editor using Python. We'll cover multiple methods, each contributing to the enhancement of our text editor's functionality.

Method 1: Basic Text Input and Output

Let's start with the most basic version of our text editor, where users can input text and save it to a file. The Python input() function will serve as our means of capturing user input, and the open() function will help us create and write to a file.

# Method 1: Basic Text Input and Output

def basic_text_editor():
    # Get user input
    user_input = input("Enter text: ")

    # Open a file in write mode and save the input
    with open("output.txt", "w") as file:
        file.write(user_input)

    print("Text saved to 'output.txt'")

Output:

Enter text: Hello, this is my basic text editor!
Text saved to 'output.txt'

In this method, the user inputs text, which is then saved to a file named output.txt.

Method 2: Reading and Displaying Text

Now, let's expand our text editor to read and display the contents of a file. We'll use the read() method to retrieve the content from a file and then display it.

# Method 2: Reading and Displaying Text

def display_text():
    # Open the file in read mode
    with open("output.txt", "r") as file:
        # Read and display the content
        content = file.read()
        print("Text from 'output.txt':")
        print(content)

Output:

Text from 'output.txt':
Hello, this is my basic text editor!

Now, users can not only input text but also view the content they've saved.

Method 3: Editing Existing Text

Let's enhance our text editor further by allowing users to edit the existing text in the file. We'll use the a mode in the open() function to append new text to the file.

# Method 3: Editing Existing Text

def edit_text():
    # Open the file in append mode
    with open("output.txt", "a") as file:
        # Get user input for editing
        edit_input = input("Enter additional text for editing: ")
        # Append the new text to the file
        file.write("\n" + edit_input)

    print("Text edited and saved to 'output.txt'")

Output:

Enter additional text for editing: This is an edited version.
Text edited and saved to 'output.txt'

Now users can add new text to the existing content in the file.

Conclusion:

In this blog, we have explored the step-by-step process of building a basic text editor in Python. Starting with simple text input and output, we gradually enhanced its functionality to include reading, displaying, and editing text. 

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