pytables.py 文件源码

def _unconvert_index(data, kind, encoding=None):
    kind = _ensure_decoded(kind)
    if kind == u('datetime64'):
        index = DatetimeIndex(data)
    elif kind == u('timedelta64'):
        index = TimedeltaIndex(data)
    elif kind == u('datetime'):
        index = np.asarray([datetime.fromtimestamp(v) for v in data],
                           dtype=object)
    elif kind == u('date'):
        try:
            index = np.asarray(
                [date.fromordinal(v) for v in data], dtype=object)
        except (ValueError):
            index = np.asarray(
                [date.fromtimestamp(v) for v in data], dtype=object)
    elif kind in (u('integer'), u('float')):
        index = np.asarray(data)
    elif kind in (u('string')):
        index = _unconvert_string_array(data, nan_rep=None, encoding=encoding)
    elif kind == u('object'):
        index = np.asarray(data[0])
    else:  # pragma: no cover
        raise ValueError('unrecognized index type %s' % kind)
    return index