def _look_up_offsets(labware_hash, definition):
calibration_path = CONFIG['labware_calibration_offsets_dir_v2']
labware_offset_path = calibration_path / '{}.json'.format(labware_hash)
if labware_offset_path.exists():
return get.get_labware_calibration(labware_offset_path, definition)
else:
return Point(x=0, y=0, z=0)
def load_from_definition(
definition: 'LabwareDefinition',
parent: Location,
label: str = None,
api_level: APIVersion = None) -> Labware:
"""
Return a labware object constructed from a provided labware definition dict
:param definition: A dict representing all required data for a labware,
including metadata such as the display name of the labware, a
definition of the order to iterate over wells, the shape of wells
(shape, physical dimensions, etc), and so on. The correct shape of
this definition is governed by the "labware-designer" project in
the Opentrons/opentrons repo.
:param parent: A :py:class:`.Location` representing the location where
the front and left most point of the outside of labware is
(often the front-left corner of a slot on the deck).
:param str label: An optional label that will override the labware's
display name from its definition
:param APIVersion api_level: the API version to set for the loaded labware
instance. The :py:class:`.Labware` will
conform to this level. If not specified,
defaults to :py:attr:`.MAX_SUPPORTED_VERSION`.
"""
labware = Labware(definition, parent, label, api_level)
index_info = _get_index_file_information(labware)
offset = get.get_labware_calibration(
index_info[0], index_info[1], parent=index_info[2])
labware.set_calibration(offset)
return labware
def test_load_calibration(monkeypatch, clear_calibration):
monkeypatch.setattr(helpers, 'hash_labware_def', mock_hash_labware)
test_labware = labware.Labware(minimalLabwareDef,
Location(Point(0, 0, 0), 'deck'))
test_offset = Point(1, 1, 1)
labware.save_calibration(test_labware, test_offset)
# Set without saving to show that load will update with previously saved
# data
test_labware.set_calibration(Point(0, 0, 0))
test_labware.tip_length = 46.8
lookup_path = labware._get_labware_path(test_labware)
calibration_point =\
get.get_labware_calibration(lookup_path, test_labware._definition)
assert calibration_point == test_offset