Testing isn't just a best practice anymore — it's survival. Whether you're writing small utilities or deploying enterprise-grade APIs, Pytest remains the most powerful and elegant tool in your Python toolbox.
🧵 In this post, I cover:
✅ Clean test structure with @pytest.mark.parametrize
✅ Fixtures done right (with teardown & reuse)
✅ How to mock like a pro (and avoid flaky tests)
✅ pytest.raises, skip/xfail, yield fixtures, and more
✅ Bonus: full code examples & practical test tips
🔍 If you’re still copy-pasting setup logic or unsure how to test exceptions properly — this post is for you.
👉 Full breakdown: https://blog.devgenius.io/pytest-in-2025-a-complete-guide-for-python-developers-9b15ae0fe07e
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