datetime
BW #90: Voter participation
Get better at: Date formats, multi-indexes, plotting, sorting, and scraping
excel
BW #88: Hot summers (solution)
Get better at: Excel files, multi-indexes, renaming columns, grouping, and plotting.
excel
BW #88: Hot summers
Get better at: Excel files, multi-indexes, renaming columns, grouping, and plotting.
geopandas
BW #87: Nuclear power (solution)
Get better at: GeoPandas, grouping, and plotting
geopandas
BW #87: Nuclear power
Get better at: GeoPandas, grouping, and plotting
datetime
BW #84: Central banks (solution)
Get better at: Dates and times, grouping, pivot tables, handling missing data, and strings
datetime
BW #84: Central banks
Get better at: Dates and times, grouping, pivot tables, handling missing data, and strings
excel
BW #82: Broadband (solution)
Get better at: Working with Excel files, dates and times, grouping, and window functions
excel
BW #82: Broadband
Get better at: Working with Excel files, dates and times, grouping, and window functions
grouping
BW #81: School (solution)
Get better at: Grouping, pivot tables, sorting, plotting, and filtering
grouping
BW #81: School
Get better at: Grouping, pivot tables, sorting, plotting, and fitlering
polars
BW #80: Inflation (solution)
Get better at: Sorting, filtering, and grouping in Polars