Pandas: from bdate_range to wide_to_long
summary
Hands-on pandas tutorial that walks a Jupyter notebook (http://s.lanzani.nl/pydataamsterdam) through Series and DataFrame ops with working code: reindex/forward-fill dates, wide_to_long/pivot to reshape data, join examples that show merge many-to-many duplicates and inner/outer/left/right behavior, missing-value APIs (fillna, dropna, threshold), combine_first alignment for filling from another series, value_counts performance notes, plotting via matplotlib, and groupby plus groupby transform returns per-row stats with exercises and runnable examples.
AI-written summary · about
chapters (10)
- 0:00Pandas introduction
- 4:00Pandas basics and Series
- 15:03DataFrames and multi-dim data
- 26:17Indexing DataFrames
- 38:29Missing data handling
- 46:14Date wrangling with merge
- 52:05Wide to long
- 1:04:46Categorical variables and plotting
- 1:11:49Grouping and aggregation
- 1:19:31Performance vs other libs
