Reducing Pandas memory usage #1: lossless compression by Itamar Turner-Trauring Last updated 06 Jan 2023, originally created 18 Nov 2019 You’re loading a CSV into Pandas, and it’s using too much RAM: your program crashes if you load the whole thing. How do you reduce memory usage without changing any of your processing code? In this article I’ll show you how to reduce the memory your DataFrame use