get_row.py 文件源码

def get_row(model, row_id, **kwargs):
    """Get a database row by its id.

    Parameters
    ----------
    model : BaseModel
    row_id : int or None

    Returns
    -------
    row
    """
    try:
        if row_id:
            try:
                row = model.get(model.id == row_id)
            except DoesNotExist:
                raise
        else:
            row = model()
    except ImportError:
        raise

    return row