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Showing content from https://mail.python.org/pipermail/python-dev/2002-March/021157.html below:

[Python-Dev] __getitem__ & slice question

[Python-Dev] __getitem__ & slice questionSkip Montanaro skip@pobox.com
Thu, 14 Mar 2002 22:52:11 -0600
I checked in what I thought was a fix for calendar.py and test_calendar.py,
then realized it didn't handle slices.  I've never dealt with __getitem__
and slices before.  Would someone try out this modified version of
calendar._localized_name and let me know what I'm doing wrong?

    class _localized_name:
        def __init__(self, format, len):
            self.data = []
            for i in range(len):
                self.data.append(strftime(format, (i,)*9).capitalize())
            # months are one-based - match 2.1 behavior
            if format == '%b':
                self.data[0] = "   "
            elif format == '%B':
                self.data[0] = ""

        def __getitem__(self, item):
            if type(item) is types.SliceType:
                return self.data[item.start:item.stop]
            return self.data[item]

        def __len__(self):
            return len(self.data)

For example, try something like

    calendar.month_abbr[-20:]

Also, should I worry about the slice's step attribute?

Skip



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