Answers questions on pandas: DataFrames, indexing, groupby, merging, reshaping, IO and time series, citing the exact file in the public docs of the GitHub repo pandas-dev/pandas (BSD-3-Clause). Not an official pandas product.
“pandas represents missing data with the special float value ``NaN`` (not a number). Many of the semantics are the same; for example missing data propagates thro…”
Answers questions on reproducible, ethical and collaborative data science from The Turing Way handbook, citing the exact chapter in the GitHub repo the-turing-way/the-turing-way (CC BY 4.0). Not an official Turing Way product.
Answers questions on Microsoft's open course ML for Beginners: regression, classification, clustering, NLP and time series, citing the exact lesson in the GitHub repo microsoft/ML-For-Beginners (MIT). Not an official Microsoft product.