fix(python): cannot import nested submodules #3540
Merged
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Nested submodules were not registered in the
__all__
list of theirparent, and so were not visible to import statement such as
from fully.qualified.submodule.path import Name
.This changes how submodules get loaded so that they are always declared
and loaded with the context of their immediate parent sub•module, which
guarantees they are present in the relevant
__all__
list.Fixes #3408
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