grouping

BW #119: Python conferences

Get better at: CSV files, working with dates and times, grouping, plotting, and handling multiple files.

May 22, 2025 2 min read paid Featured

BW #118: Flight delays (solution)

Get better at: CSV files, working with dates and times, pivot tables, and plotting

May 16, 2025 11 min read paid Featured

BW #118: Flight delays

Get better at: CSV files, working with dates and times, pivot tables, and plotting

May 14, 2025 3 min read paid Featured

BW #117: Electricity (solution)

Get better at: CSV files, working with dates and times, pivot tables, grouping, and plotting

May 8, 2025 14 min read paid Featured

BW #113: US airport traffic (solution)

Get better at: Excel files, multiple files, pivot tables, grouping, dates and times, and plotting

Apr 10, 2025 15 min read paid Featured

BW #113: US airport traffic

Get better at: Excel files, multiple files, pivot tables, grouping, dates and times, and plotting

Apr 9, 2025 3 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 #106: Flu season (solution)

Get better at: String manipulation, working with dates, plotting, grouping, and pivot tables

Feb 20, 2025 14 min read paid Featured

BW #106: Flu season

Get better at: String manipulation, working with dates, plotting, grouping, and pivot tables

Feb 19, 2025 2 min read paid Featured

BW #105: Federal employees (solution)

Get better at: String manipulation, working with multiple files, joins, grouping, and plotting

Feb 14, 2025 16 min read paid Featured

BW #105: Federal employees