3eaa24ad14989863c9e4d566463d5e0974cde5d1,bokeh/charts/_attributes.py,AttrSpec,AttrSpec_1,#,22

Before Change

    data = Instance(ColumnDataSource)
    name = String(help="Name of the attribute the spec provides.")
    columns = List(String)

    def __init__(self, columns=None, df=None, iterable=None, default=None, **properties):

        columns = self._ensure_list(columns)

After Change

    data = Instance(ColumnDataSource)
    name = String(help="Name of the attribute the spec provides.")
    columns = Either(ColumnLabel, List(ColumnLabel))

    def __init__(self, columns=None, df=None, iterable=None, default=None, **properties):

        columns = self._ensure_list(columns)

Instances