Decrease cost of ipynb code path when unneeded #3748
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
IPython is a very expensive import, like, at least 300ms. I'd also venture that it's much more common than tokenize-rt, which is like 30ms. I work in a repo where I use black, have IPython installed and there happen to be a couple notebooks (that we don't want formatted). I know I can force exclude ipynb, but this change doesn't really have a cost.