
BW #94: Strategic Wine Reserve (solution)
Get better at: Grouping, sorting, and plotting
Get better at: Grouping, sorting, and plotting
Get better at: Grouping, sorting, and plotting
Get better at: Date formats, multi-indexes, plotting, sorting, and scraping
Get better at: Date formats, multi-indexes, plotting, sorting, and scraping
Get better at: Grouping, pivot tables, sorting, plotting, and filtering
Get better at: Grouping, pivot tables, sorting, plotting, and fitlering
Get better at: Sorting, filtering, and grouping in Polars
Get better at: Sorting, filtering, and grouping in Polars
Get better at: CSV files, PyArrow, multi-indexes, index operations, plotting, grouping, sorting, correlations, and joins.
Get better at: CSV files, PyArrow, multi-indexes, index operations, plotting, grouping, sorting, correlations, and joins.
Get better at: CSV files, memory optimization, grouping, stack/unstack, window functions, and sorting.
Get better at: CSV files, memory optimization, grouping, stack/unstack, window functions, and sorting.