Global constant dictionaries

Numba Support: How do I do ...?
1

Hello,

What is the best way to use global constant dictionaries in numba? I know that using a numba typed Dict doesn’t work, because it cannot be made constant, and thus its values cannot be known at the time of computing function closure during compilation.

Similarly, I have seen the existence of LiteralStrKeyDict but it is not obvious if they can be explicitly defined.

It is trivial of course to wrap all constants in a structure and pass it as argument to numba code, but certain projects make heavy use of dictionaries (for example certain properties given a cell type, or simply to store the genetic code) and it is more readable to have those as simply constants.

Many thanks!

2

You can try following the example here that uses a global dictionary variable _work_registry. It follows, in turn, the approach developed by Daniel Weitekamp here.

1 Like