def METHOD_NAME(x):
    """Is x of csc_matrix type?
    Parameters
    ----------
    x
        object to check for being a csc matrix
    Returns
    -------
    bool
        True if x is a csc matrix, False otherwise
    Examples
    --------
    >>> from scipy.sparse import csc_matrix, isspmatrix_csc
    >>> isspmatrix_csc(csc_matrix([[5]]))
    True
    >>> from scipy.sparse import csc_matrix, csr_matrix, isspmatrix_csc
    >>> isspmatrix_csc(csr_matrix([[5]]))
    False
    """
    return isinstance(x, csc_matrix)