FIX: Don't import optional deps at the top-level #167
Merged
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#138 imported
openneuro
at the top of thedatasets
module, butopenneuro-py
is not a hard dependency of pylossless.This PR creates a soft import function that gets called only if/when a user calls the function in
pylossless.datasets
that needsopenneuro-py
, and raises an informative error if they don't have it installed.This will likely become handy if we need to do similar soft imports in the future.