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This is the developer documentation for MPF 0.54, which is the “dev” (next) release of MPF that is a work-in-progress. Use the “Read the Docs” link in the lower left corner to view the developer docs for the version of MPF you’re using.


class mpf.devices.light_group.LightRing(machine: mpf.core.machine.MachineController, name)

Bases: mpf.devices.light_group.LightGroup

A light ring.

Accessing light_rings in code

The device collection which contains the light_rings in your machine is available via self.machine.light_rings. For example, to access one called “foo”, you would use self.machine.light_rings.foo. You can also access light_rings in dictionary form, e.g. self.machine.light_rings['foo'].

You can also get devices by tag or hardware number. See the DeviceCollection documentation for details.

Methods & Attributes

Light_rings have the following methods & attributes available. Note that methods & attributes inherited from base classes are not included here.

color(color, fade_ms=None, priority=0, key=None)

Call color on all lights in this group.

format_log_line(msg, context, error_no) → str

Return a formatted log line with log link and context.


Return all lights in group as token.

raise_config_error(msg, error_no, *, context=None) → NoReturn

Raise a ConfigFileError exception.