Python Programming Learning Circle

Apr 26, 2022 · Big Data

Accelerating Pandas apply: Up to 600× Speedup with Swifter, Vectorization, dtype Conversion, and .values

This article demonstrates how to dramatically speed up the slow pandas apply function—by up to six hundred times—using Swifter for parallel execution, vectorized pandas/numpy operations, dtype downcasting, and direct .values array manipulation, with detailed timing comparisons.