Blogs

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• May 29, 2026

  Using Excel UDF to compare data differences

• Apr 10, 2026

  A quick note on TLS certificates

• Oct 27, 2025

  Polars null operations

• Sep 5, 2025

  Polars LazyFrame properties are expensive operations

• Aug 18, 2025

  Improve VarianceThreshold performance in ML feature selection

• Jul 11, 2025

  Reduce a python app run time from two hours to 20 seconds

• Mar 17, 2025

  Using Gurobi Python matrix API to reduce problem creation time

• Mar 5, 2025

  Which orchestration tool is better: Airflow, Prefect, Argo Workflows, or Temporal?

• Nov 26, 2024

  Make python loops 5x to 10x faster using numba

• Sep 6, 2024

  The pandas function pd.read_sql returns an empty DataFrame without correct data types

• Jun 13, 2024

  Read CSV files 10x to 40x faster using pyarrow and polars

• Apr 14, 2024

  Explode date ranges in a pandas DataFrame 30x faster

• Apr 7, 2024

  How to create dummy pandas DataFrames for testing

• Feb 2, 2024

  How to install and setup WSL on Windows

• Jan 11, 2024

  How to fix a corrupted Excel file with high CPU usage

• Mar 15, 2018

  Random notes on optimization