http://ghafoorsblog.com/tags/csv-troubleshooting/Recent content in Csv Troubleshooting on Ghafoor's Personal BlogHugoennoreply@example.com (AG Sayyed)noreply@example.com (AG Sayyed)Copyright © 2024-2026 AG Sayyed. All Rights Reserved.Thu, 16 Apr 2026 17:23:48 +0100http://ghafoorsblog.com/courses/google/it-automation-content/it-automation-python-pcert/04-troubleshooting-debugging/01-module/012-finding-invalid-data/Tue, 11 Nov 2025 14:32:19 +0000noreply@example.com (AG Sayyed)http://ghafoorsblog.com/courses/google/it-automation-content/it-automation-python-pcert/04-troubleshooting-debugging/01-module/012-finding-invalid-data/<p class="lead text-primary"> This document presents a hands-on troubleshooting case study demonstrating the bisecting technique in action. It walks through identifying corrupt data in a 100-line CSV file that causes import failures, using command-line utilities to systematically narrow down the problem from 100 lines to a single malformed field, then implementing both immediate fixes and long-term preventive solutions. </p> <hr> <h2 id="the-problem-scenario">The Problem Scenario</h2> <p>A program that reads data from a CSV file, processes it, and imports it into a database encounters a failure. A user reports that their file import fails with an obscure import error and provides the problematic file for investigation.</p>