Publishing archive
Tuesday
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The highlighted days are the ones with something published; those are clickable.
IT
The thirteenth lesson of the Python course. The World Bank's answer is a list of two elements: a service part and the records. We take it apart by hand and find what spoils a calculation silently: `null` becomes `None`, and numeric keys come back from a round trip through JSON as strings — `2025` goes out, `"2025"` comes in.
IT
The twelfth lesson of the Python course. On the row `2022,15.0,"shock, war, logistics"`, `split(",")` returns five pieces instead of three — measured. The csv module returns three. Plus `DictReader`, the required `newline=""`, and Excel's mark, which makes `row["year"]` answer `KeyError` while the column is right there.
IT
The eleventh lesson of the Python course. The program writes its data, reads it line by line and puts the report beside it. The path is built by `Path` rather than by gluing strings: on Windows the same path is written with a backslash. And the encoding is always named — leave it out and the system chooses it for you.
IT
The tenth lesson of the Python course. Three of five rows from somebody else's export made it through: a comma is a full stop, while "no data" and an empty string are not numbers. `try/except/else/finally`, an error name of your own in one line, and the skill that matters — reading a traceback from its last line upwards.
IT
The ninth lesson of the Python course. The walk over a series gets a name and works on any series: Kazakhstan at 11.52%, the world at 4.68%. Plus an `assert` that stops the calculation on an empty series, the `lambda` in `sorted(key=)`, and a measured trap: `into=[]` in a header keeps its values between calls.
IT
The eighth lesson of the Python course. One comparison instead of thirty: a loop walks the series itself, `continue` steps over the year with no data, an accumulator gives the average — 11.52% across five years. Plus two traps: `zip` silently cuts to the shorter series, and a `while` without a way out walks off the edge.
IT
The seventh lesson of the Python course. A number on its own says nothing: is 11.4% a lot or a little? A condition compares, and the comparison picks the road. Measured on inflation: Kazakhstan at 11.4% in 2025, the world at 3.0%. Plus the first rule of working with data: a gap in a series is not a zero, and `is None` is how you ask.
