numpy.busday_offset — NumPy v1.13 Manual (original) (raw)

dates : array_like of datetime64[D]

The array of dates to process.

offsets : array_like of int

The array of offsets, which is broadcast with dates.

roll : {‘raise’, ‘nat’, ‘forward’, ‘following’, ‘backward’, ‘preceding’, ‘modifiedfollowing’, ‘modifiedpreceding’}, optional

How to treat dates that do not fall on a valid day. The default is ‘raise’.

• ‘raise’ means to raise an exception for an invalid day.
• ‘nat’ means to return a NaT (not-a-time) for an invalid day.
• ‘forward’ and ‘following’ mean to take the first valid day later in time.
• ‘backward’ and ‘preceding’ mean to take the first valid day earlier in time.
• ‘modifiedfollowing’ means to take the first valid day later in time unless it is across a Month boundary, in which case to take the first valid day earlier in time.
• ‘modifiedpreceding’ means to take the first valid day earlier in time unless it is across a Month boundary, in which case to take the first valid day later in time.

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 datetime64[D], optional

If provided, this array is filled with the result.