altair.typing.ChannelOpacity

altair.typing.ChannelOpacity = str | altair.vegalite.v6.schema.channels.Opacity | altair.vegalite.v6.schema.channels.OpacityDatum | altair.vegalite.v6.schema.channels.OpacityValue | ForwardRef('IntoCondition') | collections.abc.Mapping[str, typing.Any]

Represent a union type

E.g. for int | str