Don't misuse KeyError for the custom names
function.
#126
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Description
See #94
Makes
KeyError
and stuff a bit more friendly for users using a customnames
lookup.If their
names
function throws aKeyError
unexpectedly, it was getting caught incorrectly.This expands the documentation & makes it so that people using a custom
names
resolver should deliberately only throw asimpleeval.NameNotDefined
, other exceptions would be raised correctly.