- numpy.busday_count(begindates, enddates, weekmask='1111100', holidays=, busdaycal=None, out=None)¶
Counts the number of valid days between begindates and enddates, not including the day of enddates.
If enddates specifies a date value that is earlier than the corresponding begindates date value, the count will be negative.
New in version 1.7.0.
begindates : array_like of datetime64[D]
The array of the first dates for counting.
enddates : array_like of datetime64[D]
The array of the end dates for counting, which are excluded from the count themselves.
weekmask : str or array_like of bool, optional
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
holidays : array_like of datetime64[D], optional
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.
busdaycal : busdaycalendar, optional
A busdaycalendar object which specifies the valid days. If this parameter is provided, neither weekmask nor holidays may be provided.
out : array of int, optional
If provided, this array is filled with the result.
out : array of int
An array with a shape from broadcasting begindates and enddates together, containing the number of valid days between the begin and end dates.
- An object that specifies a custom set of valid days.
- Returns a boolean array indicating valid days.
- Applies an offset counted in valid days.
>>> # Number of weekdays in January 2011 ... np.busday_count('2011-01', '2011-02') 21 >>> # Number of weekdays in 2011 ... np.busday_count('2011', '2012') 260 >>> # Number of Saturdays in 2011 ... np.busday_count('2011', '2012', weekmask='Sat') 53