code: def busday_count(
      begindates,
      enddates,
      weekmask=None,
      holidays=None,
      busdaycal=None,
      out=None,
  ):
      """
      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.
  
      .. versionadded:: 1.7.0
  
      Parameters
      ----------
      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.
  
      Returns
      -------
      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.
  
      See Also
      --------
      busdaycalendar : An object that specifies a custom set of valid days.
      is_busday : Returns a boolean array indicating valid days.
      busday_offset : Applies an offset counted in valid days.
  
      Examples
      --------
      >>> # 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
      """
      return (begindates, enddates, weekmask, holidays, out)
  
imports: import functools
  from .None import overrides
  from .None import _multiarray_umath
  from ._multiarray_umath import *
  from ._multiarray_umath import fastCopyAndTranspose, _flagdict, from_dlpack, _place, _reconstruct, _vec_string, _ARRAY_API, _monotonicity, _get_ndarray_c_version, _get_madvise_hugepage, _set_madvise_hugepage, _get_promotion_state, _set_promotion_state, _using_numpy2_behavior
label_desc: Use image node_id 22 for calling a global function with example usage: busday_count(begindates, enddates, weekmask, holidays, busdaycal, out) and returns: begindates,  enddates,  weekmask,  holidays,  out