formatting

BW #132: JetBrains survey (solutions)

Get better at: CSV files, PyArrow, reducing memory usage, working with dates and times, pivot tables, and plotting.

Aug 21, 2025 10 min read paid Featured

BW #132: JetBrains survey

Get better at: CSV files, PyArrow, reducing memory usage, working with dates and times, pivot tables, and plotting.

Aug 20, 2025 2 min read paid Featured

BW #121: Research funding (solution)

Get better at: CSV files, grouping, strings, formatting, dates and times, and plotting

Jun 6, 2025 10 min read paid Featured

BW #121: Research funding

Get better at: CSV files, grouping, strings, formatting, dates and times, and plotting

Jun 4, 2025 4 min read paid Featured

BW #67: Electric cars (solution)

Get better with: CSV, pivot tables, window functions, the "pipe" method, stack and unstack, grouping, and formatting.

Jun 18, 2024 10 min read paid

BW #67: Electric cars

Get better with: CSV, pivot tables, window functions, the "pipe" method, stack and unstack, grouping, and formatting.

Jun 18, 2024 3 min read paid

BW #54: Household debt (solution)

Get better at: Excel, formatting, plotting, window-functions, using "apply", string functionality, grouping, and interpolation

Feb 22, 2024 16 min read paid

BW #54: Household debt

Get better at: Excel, formatting, plotting, window-functions, using "apply", string functionality, grouping, and interpolation

Feb 21, 2024 4 min read paid

BW #49: Campaign finance (solution)

Get better at: Scraping, CSV, formatting, grouping, plotting, correlations

Jan 18, 2024 18 min read paid

BW #49: Campaign finance

Get better at: Scraping, CSV, formatting, grouping, plotting, correlations

Jan 17, 2024 3 min read paid

BW #45: Netflix (solution)

Get better at: Excel, dates and times, missing data, grouping, formatting, using "apply", plotting, and regular expressions

Dec 21, 2023 17 min read paid

BW #45: Netflix