Publishing archive
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The highlighted days are the ones with something published; those are clickable.
IT
The twenty-sixth lesson of the Python course. Somebody else's file means a separator, a comma inside the decimals, a BOM and its own mark for a missing value; in a loop you have to remember every one of them, and in `read_csv` they are arguments. `read_csv`, `to_csv`, `read_sql` and `to_sql` — and what a file does not remember about a table.
IT
The twenty-fifth lesson of the Python course. A table whose rows carry labels does not answer the way a list does: `loc` takes by label, `iloc` by number, and two series are added by year rather than by position. `DataFrame` and `Series`, the index, slices whose ends differ, and the `NaN` that appears on its own.
