I Reduced My Pandas Runtime by 95% — Here’s What I Was Doing Wrong

# Why Your Data Analysis Might Be Running Painfully Slow If you work with large spreadsheets or databases, there's a good chance your analysis tools are running much slower than they need to—sometimes by 95% or more. The culprit is usually doing things one row at a time instead of processing data in batches, which is like checking groceries one item at a time instead of scanning them all together. Knowing when to switch to faster tools or fix these hidden slowdowns can save you hours of waiting time.