Multiple SPtype for different materials in SourcePlate

[hainesm6]

Problem

There are cases when materials in a SourcePlate require different SPtype values when transfering via the echo. For example, mammalian lysate require "384PP_AQ_GP" while water, DNA etc. requires "384PP_Plus_AQ_BP".

Potential solution

If there isn't an established solution to this problem, I'd recommend adding an optional argument to EchoRun.write_picklist method where the user can override plate.type for a given EchoSourceMaterial.name attribute. Something like passing in a iterable of tuples which override plate.type for the associated material e.g.

[("txtl_mm", "384_Plus_AQ_GP")]

Would mean all rows where txtl_mm is transfered, use the associated 384_Plus_AQ_GP plate type and everything else is transfered with the default. Let me know if this is works and I'd be happy to make the changes and write associated tests.

[murrayrm]

@hainesm6 I'm not sure that @sclamons and/or @WilliamIX are actively maintaining this package or not, so I'll respond (always dangerous -:).

Your solution sounds fine, though you might want to use a dict instead of a tuple and use a regex for the name, with the idea that the first matching entry gets used. So if you set plate.type to '384_Plus_AQ_GP' then it uses that for the entire plate, but if you set it to {r'txtl_mm*': '384_Plus_AQ_GP', r'*': 'default'} then you get '384_Plus_AQ_GP' for anything that is txtl_mm* and 'default' for everything else.

[hainesm6]

Thanks @murrayrm! Yes agreed, a dict would improve readability and regex seems sensible in case there are multiple materials where an overide is required.