test_pytables.py 文件源码

def test_read_nokey(self):
        df = DataFrame(np.random.rand(4, 5),
                       index=list('abcd'),
                       columns=list('ABCDE'))
        with ensure_clean_path(self.path) as path:
            df.to_hdf(path, 'df', mode='a')
            reread = read_hdf(path)
            assert_frame_equal(df, reread)
            df.to_hdf(path, 'df2', mode='a')
            self.assertRaises(ValueError, read_hdf, path)