Comments (2)
I found this SO post which seems related: https://stackoverflow.com/questions/71495611/python-pint-defined-offset-unit-definition-behaves-unexpected-on-conversion/71496690#71496690
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This is a bug. The error message:
pint.errors.DimensionalityError: Cannot convert from 'standard_atmosphere' ([mass] / [length] / [time] ** 2) to '1 / second ** 2' (1 / [time] ** 2)
The reason why it fails for some gauge units but not for all, is caused by the differences in the definition. The code used only the last unit in the UnitsContainer of the "to"-unit. This works fine as long as the gauge unit is defined based on a single unit ("pascal"). However, if you use a composed unit "gram / metre / second ** 2" the code picked only the last element in the UnitContainer which is '1 / second ** 2'.
@zobac - I proposed a fix in #1952.
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