Function count

numpy/core/defchararray.py:523–565

Returns an array with the number of non-overlapping occurrences of substring `sub` in the range [`start`, `end`]. Calls `str.count` element-wise. Parameters ---------- a : array_like of str or unicode sub : str or unicode The substring to search for. start

(a, sub, start=0, end=None)

@array_function_dispatch(_count_dispatcher)
def count(a, sub, start=0, end=None):
    """
    Returns an array with the number of non-overlapping occurrences of
    substring `sub` in the range [`start`, `end`].

    Calls `str.count` element-wise.

    Parameters
    ----------
    a : array_like of str or unicode

    sub : str or unicode
       The substring to search for.

    start, end : int, optional
       Optional arguments `start` and `end` are interpreted as slice
       notation to specify the range in which to count.

    Returns
    -------
    out : ndarray
        Output array of ints.

    See Also
    --------
    str.count

    Examples
    --------
    >>> c = np.array(['aAaAaA', '  aA  ', 'abBABba'])
    >>> c
    array(['aAaAaA', '  aA  ', 'abBABba'], dtype='<U7')
    >>> np.char.count(c, 'A')
    array([3, 1, 1])
    >>> np.char.count(c, 'aA')
    array([3, 1, 0])
    >>> np.char.count(c, 'A', start=1, end=4)
    array([2, 1, 1])
    >>> np.char.count(c, 'A', start=1, end=3)
    array([1, 0, 0])

    """
    return _vec_string(a, int_, 'count', [sub, start] + _clean_args(end))


def _code_dispatcher(a, encoding=None, errors=None):