Method test_isalnum

numpy/core/tests/test_defchararray.py:256–258

(self)

        assert_(issubclass(np.char.index('abcba', 'b').dtype.type, np.integer))

    def test_isalnum(self):
        assert_(issubclass(self.A.isalnum().dtype.type, np.bool_))
        assert_array_equal(self.A.isalnum(), [[False, False], [True, True], [False, True]])

    def test_isalpha(self):
        assert_(issubclass(self.A.isalpha().dtype.type, np.bool_))