regular-expressions

BW #123: Missiles (solution)

Get better at: Web scraping, pivot tables, grouping, cleaning data, and using regular expressions

Jun 20, 2025 13 min read paid Featured

BW #123: Missiles

Get better at: Web scraping, pivot tables, grouping, cleaning data, and using regular expressions

Jun 19, 2025 3 min read paid Featured

BW #120: Pennies (solution)

Get better at: API usage, JSON manipulation, strings, regular expressions, and grouping

May 29, 2025 13 min read paid Featured

BW #120: Pennies

Get better at: API usage, JSON manipulation, strings, regular expressions, and grouping

May 28, 2025 5 min read paid Featured

BW #112: Programming jobs (solution)

Get better at: Excel files, regular expressions, optimizing speed, PyArrow, grouping, joining, and plotting.

Apr 3, 2025 14 min read paid Featured

BW #112: Programming jobs

Get better at: Excel files, regular expressions, optimizing speed, PyArrow, grouping, joining, and plotting.

Apr 2, 2025 3 min read paid Featured

# BW #111: State taxes (solution)

Get better at: Excel files, cleaning data, regular expressions, multi-indexes, and plotting

Mar 27, 2025 10 min read paid Featured

# BW #111: State taxes

Get better at: Excel files, cleaning data, regular expressions, multi-indexes, and plotting

Mar 26, 2025 3 min read paid Featured

BW #107: Consumer confidence (solution)

Get better at: CSV files, dates and times, filtering, regular expressions, correlations, and plotting

Feb 27, 2025 13 min read paid Featured

BW #107: Consumer confidence

Get better at: CSV files, dates and times, filtering, regular expressions, correlations, and plotting

Feb 26, 2025 3 min read paid Featured

BW #75: Refugees (solution)

Get better at: CSV, filtering, regular expressions, multiple files, index operations, window functions, stack and unstack, multi-indexes, and plotting

Jul 19, 2024 12 min read paid

BW #75: Refugees