(BUGFIX) Use labels in generate_functions #1056
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Summary
The existing code has
"r'^(?:' + '|'.join({labels}) + ')$'"
, which is presumably trying to join the labels passed into the function, but the string interpolation does not appear to be correct python. It's not clear to me how important "correctness" is in these functions, but it seems like it would all work better if it was valid python.My change uses
pattern = r'^(?:' + '|'.join(labels.keys()) + ')$'\n",
Motivation
I was looking into how to use functions API and realized there appeared to be a bug in the cookbook example.