Function count

numpy/_core/strings.py:405–446

Returns an array with the number of non-overlapping occurrences of substring ``sub`` in the range [``start``, ``end``). Parameters ---------- a : array-like, with ``StringDType``, ``bytes_``, or ``str_`` dtype sub : array-like, with ``StringDType``, ``bytes_``, or ``str_``

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

@set_module("numpy.strings")
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``).

    Parameters
    ----------
    a : array-like, with ``StringDType``, ``bytes_``, or ``str_`` dtype

    sub : array-like, with ``StringDType``, ``bytes_``, or ``str_`` dtype
       The substring to search for.

    start, end : array_like, with any integer dtype
        The range to look in, interpreted as in slice notation.

    Returns
    -------
    y : ndarray
        Output array of ints

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

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

    """
    end = end if end is not None else MAX
    return _count_ufunc(a, sub, start, end)


@set_module("numpy.strings")