[Python-Dev] iso8601 parsing (original) (raw)
Alexander Belopolsky alexander.belopolsky at gmail.com
Wed Oct 25 16:32:39 EDT 2017
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On Wed, Oct 25, 2017 at 3:48 PM, Alex Walters <tritium-list at sdamon.com> wrote:
Why make parsing ISO time special?
It's not the ISO format per se that is special, but parsing of str(x). For all numeric types, int, float, complex and even fractions.Fraction, we have a roundtrip invariant T(str(x)) == x. Datetime types are a special kind of numbers, but they don't follow this established pattern. This is annoying when you deal with time series where it is common to have text files with a mix of dates, timestamps and numbers. You can write generic code to deal with ints and floats, but have to special-case anything time related.
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