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Python code samples

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How to Convert Images Between Formats in Python

Use the Pillow library to open an image from one file format and save it to another, with error handling for missing files or conversion issues.

pillow image conversion file i/o

Python

from PIL import Image
import sys

def convert_image_format(input_path, output_path):
    try:
        img = Image.open(input_path)
        img.save(output_path)
        print(f"Converted {input_path} to {output_path}")
    except FileNotFoundError:
        print(f"Error: File {input_path} not found")
        sys.exit(…

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Guide: free Python code samples library

Copy-ready Python snippets for learners and developers

PythonSkillset code samples are short, focused examples organised by topic and difficulty. Every snippet is server-rendered HTML — readable by search engines and easy to copy. Open any sample, read the notes, copy the code, then press Try in editor to run it in the browser with Pyodide.

How to use this library

Pick a topic section — strings, lists, files, functions, and more
Open a sample, read How it works, and copy the code block
Run it in the IDE, tweak values, then take a related quiz or tutorial lesson

Samples vs tutorials and challenges

Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.

Free online Python IDE Write and run Python in your browser — no install. Free Python code formatter Format with autopep8 — side-by-side PEP 8 cleanup.