Hi everyone,
Is there are a discrepancy between the lh.aspirate() and lh.dispense() methods in regards to what type their respective lld_mode has to be?
Possible liquid handling factors & their levels:
lld_mode_types = [int, LLDMode]methods = [lh.aspirate(), lh.dispense()]
When using aspirate → only lld_mode_types = [LLDMode] works and when using an integer it doesn’t:
await lh.aspirate(
[source_well],
vols=[5],
swap_speed = [50],
homogenization_speed = [20],
lld_mode = [1],
use_channels = [0],
)
…throws up error:
File ~/pylabrobot/pylabrobot/liquid_handling/backends/hamilton/STAR.py:81, in _fill_in_defaults(val, default)
79 # if the val is a list of the correct length, the values must be of the right type.
80 if not all(isinstance(v, t) for v in val):
---> 81 raise ValueError(f"Value must be a list of {t}, but is {val}")
82 # the value is ready to be used.
83 return val
ValueError: Value must be a list of <enum 'LLDMode'>, but is [1]
And when using dispense → only lld_mode_types = [int] works and when using LLDMode it doesn’t:
await lh.dispense(
[dest_well],
vols=[5],
swap_speed = [50],
lld_mode = [lh.backend.LLDMode(1)],
use_channels = [0],
flow_rates = 50,
mix_speed = 30)
…throws up error:
File ~/pylabrobot/pylabrobot/liquid_handling/backends/hamilton/STAR.py:81, in _fill_in_defaults(val, default)
79 # if the val is a list of the correct length, the values must be of the right type.
80 if not all(isinstance(v, t) for v in val):
---> 81 raise ValueError(f"Value must be a list of {t}, but is {val}")
82 # the value is ready to be used.
83 return val
ValueError: Value must be a list of <class 'int'>, but is [<LLDMode.GAMMA: 1>]
This is a bit confusing. Can we standardise the lld_mode-type to be used between aspirate & dispense?
I don’t think it matters too much which one as long as it is the same.