Jul 12, 2026· 6 min read
Encode and Decode Base64 Data in Python
Learn how to use Python's base64 module to encode binary data as text and decode Base64 strings back to bytes.
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12 of 344 tutorials
Jul 12, 2026· 9 min read
Threads vs Processes vs Async in Python
Compare Python threading, multiprocessing, and asyncio side by side with benchmarks so you can choose the right concurrency model for your workload.
PythonConcurrencyAdvanced
Jul 12, 2026· 9 min read
Build an Asynchronous Web Scraper with Python
Build a complete async web scraper in Python using asyncio and aiohttp, with concurrency limiting, error handling, result parsing, and CSV export.
AdvancedConcurrencyPython
Jul 13, 2026· 7 min read
How to Test Python Code
Learn what testing means in Python, the core ideas behind automated tests, and the built-in and third-party tools that make testing practical.
IntermediatetestingPython
Jul 13, 2026· 7 min read
Write Your First Python Unit Test
Write and run your first Python unit test step by step, using unittest to check a small function and understand the test output.
testingPythonIntermediate
Jul 13, 2026· 8 min read
Python `unittest` Explained
Learn the core features of Python's built-in unittest framework: assertion methods, setUp and tearDown, test discovery, skipping tests, and subtests.
testingIntermediatePython
Jul 13, 2026· 8 min read
Write Better Python Tests with pytest
Learn how pytest simplifies Python testing with plain assert statements, fixtures, parametrize, markers, and built-in unittest compatibility.
PythonIntermediatetesting+1
Jul 13, 2026· 7 min read
Organize and Run Python Tests
Learn how to structure test directories, run tests with unittest and pytest, configure test discovery, and integrate tests into your workflow.
testingPythonIntermediate
Jul 13, 2026· 7 min read
Test Exceptions and Edge Cases in Python
Learn how to test that your Python code raises the right exceptions and handles edge cases like empty inputs, boundary values, and unexpected types.
IntermediatePythontesting
Jul 13, 2026· 8 min read
Mock Objects and External Dependencies in Python
Learn how to use unittest.mock to replace external dependencies like databases and APIs with mock objects, so your unit tests stay fast and reliable.
mockingIntermediatePython+1
Jul 13, 2026· 7 min read
The Singleton Pattern in Python
Learn how to implement the singleton pattern in Python and why module-level variables often serve the same purpose more naturally.
AdvancedPythonBest Practices
Jul 13, 2026· 8 min read
Refactor a Real Python Project
Apply safe refactoring techniques to a complete Python project, transforming messy code into clean, maintainable modules step by step.
PythonAdvancedBest Practices