[issue3336] datetime weekday() function

[Tim Peters]

Tim Peters <tim.peters at gmail.com> added the comment:

The error message is correct.  In the Gregorian calendar, years
divisible by 100 are not leap years, unless they're also divisible by
400.  So 2000, 2400, 2800, ..., are leap years, but 2100, 2200, 2300,
2500, 2600, 2700, 2900, ... are not leap years.  Look it up (anywhere ;-)).

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nosy: +tim_one

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<http://bugs.python.org/issue3336>
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