The latest articles on DEV Community by Abhinav Chaturvedi (@abhinav_chaturvedi_f67faf). https://dev.to/abhinav_chaturvedi_f67faf https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3782836%2F453126a2-5fc3-4c86-a2df-90af7a0de7e7.png https://dev.to/abhinav_chaturvedi_f67faf en Abhinav Chaturvedi Fri, 20 Feb 2026 15:50:22 +0000 https://dev.to/abhinav_chaturvedi_f67faf/i-built-a-cli-that-auto-fixes-failing-python-tests-545f https://dev.to/abhinav_chaturvedi_f67faf/i-built-a-cli-that-auto-fixes-failing-python-tests-545f <p>I built a CLI tool that analyzes pytest failures and proposes fixes automatically.</p> <h2> How It Works </h2> <ol> <li>Runs your test suite</li> <li>Analyzes failure patterns </li> <li>Proposes a fix with diff preview</li> <li>You approve or reject</li> <li>Re-runs to verify no regressions</li> </ol> <h2> Demo </h2> <p> </p> <div class="crayons-card c-embed text-styles text-styles--secondary"> <div class="c-embed__content"> <div class="c-embed__body"> <h2 class="fs-xl lh-tight"> <a href="https://drive.google.com/file/d/1Uv79v47-ZVC6xLv1TZL2cvEbUuLcy5FU/view?usp=drivesdk" rel="noopener noreferrer" class="c-link"> VID-20260220-WA0000.mp4 - Google Drive </a> </h2> <div class="color-secondary fs-s flex items-center"> <img alt="favicon" class="c-embed__favicon m-0 mr-2 radius-0" src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fssl.gstatic.com%2Fimages%2Fbranding%2Fproduct%2F1x%2Fdrive_2020q4_32dp.png"> drive.google.com </div> </div> </div> </div> <h2> Current Approach </h2> <p>Right now it's mostly pattern-based - analyzes pytest output and looks for common bugs like wrong operators, flipped logic, off-by-one errors.</p> <p>There's an LLM fallback for trickier cases, but the core is deterministic to keep it predictable and safe.</p> <p>The goal is to automate the test → fix → validate loop, not just explain errors like ChatGPT would.</p> <h2> What's Next </h2> <p>Looking to handle more complex failure patterns and improve the global optimization approach (scoring multiple candidate fixes across the full test suite).</p> <p>Also looking for beta testers - DM me if you want to try it on a real project.</p> <h2> Feedback Welcome </h2> <p>What kind of test failures would you find most useful to auto-fix?<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight plaintext"><code> **Publish it.** --- ### **2. Twitter Post** </code></pre> </div> <p>Built a CLI that auto-fixes failing Python tests 🐍</p> <p>Analyzes pytest output → proposes fix → shows diff → validates no regressions</p> <p>Demo: <a href="https://drive.google.com/file/d/1Uv79v47-ZVC6xLv1TZL2cvEbUuLcy5FU/view?usp=drivesdk" rel="noopener noreferrer">https://drive.google.com/file/d/1Uv79v47-ZVC6xLv1TZL2cvEbUuLcy5FU/view?usp=drivesdk</a></p> <p>Pattern-based core + LLM fallback for edge cases</p> <p>Looking for beta testers. Thoughts?</p> <h1> Python #DevTools #Automation </h1> automation python showdev testing