is_busday(dates, weekmask='1111100', holidays=None, busdaycal=None, out=None)¶
Calculates which of the given dates are valid days, and which are not.
New in version 1.7.0.
The array of dates to process.
A seven-element array indicating which of Monday through Sunday are valid days. May be specified as a length-seven list or array, like [1,1,1,1,1,0,0]; a length-seven string, like ‘1111100’; or a string like “Mon Tue Wed Thu Fri”, made up of 3-character abbreviations for weekdays, optionally separated by white space. Valid abbreviations are: Mon Tue Wed Thu Fri Sat Sun
An array of dates to consider as invalid dates. They may be specified in any order, and NaT (not-a-time) dates are ignored. This list is saved in a normalized form that is suited for fast calculations of valid days.
busdaycalendar object which specifies the valid days. If this
parameter is provided, neither weekmask nor holidays may be
If provided, this array is filled with the result.
An array with the same shape as
dates, containing True for
each valid day, and False for each invalid day.
>>> # The weekdays are Friday, Saturday, and Monday ... np.is_busday(['2011-07-01', '2011-07-02', '2011-07-18'], ... holidays=['2011-07-01', '2011-07-04', '2011-07-17']) array([False, False, True])