Build a Text Analyzer in Python — Full Beginner Tutorial

Published: 23 August 2026
on channel: Dewiride School

Build a working command-line text analyzer in Python, starting from an empty folder. No programming experience needed — every line is typed out and explained.

By the end you'll have a tool that reads any text file and tells you how many lines and words it has, which words appear most often, and which lines are too long. Along the way you'll meet argparse, try/except, Counter, list comprehensions, and the errors beginners actually hit.

Written version, with all the code to copy: https://devblogs.dewiride.com/blog/build-a...

Sample text files used in the video: https://strdewiridedevblogsprod.blob.core....

CHAPTERS 00:00 What we're building 02:40 Is Python already installed? 04:31 python vs python3 - read this first 05:22 Installing VS Code 07:00 Creating the project folder 08:36 Opening the folder in VS Code 09:31 Creating text-analyzer.py 10:48 Getting the sample text files 12:36 Step 1 - Accepting arguments 18:22 Running it wrong on purpose 20:22 Step 2 - Reading the file safely 23:48 Step 3 - Counting lines 25:07 Step 4 - Counting words 28:42 Step 5 - Word frequency 30:59 Step 6 - Detecting long lines 34:14 Step 7 - Displaying results 38:28 The finished program 39:42 Testing it four ways 41:09 When things go wrong 44:43 What to build next

WHAT YOU NEED

Python 3.6 or newer (python.org)
Visual Studio Code (code.visualstudio.com)
Both are free, on Mac, Windows and Linux
A NOTE ON THE NARRATION The voice in this video is AI-generated (Azure Neural TTS). The script, the code, the screen recording and every command you see running are real.

#python #pythonforbeginners #learnpython #pythonprojects #coding #programmingforbeginners #vscode #argparse #pythontutorial

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