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I'm using traitlets version 5.14.3 and Python 3.12.3...
- The error raised by
Dict()withper_key_traitsshould specify the offending key name in the error. - The error raised by
Dict()withper_key_traitsdoesn't handle nested dicts well
Example:
from traitlets import HasTraits, Dict, Unicode
class Foo(HasTraits):
bar = Dict(per_key_traits={"this": Unicode(), "that": Dict(per_key_traits={"that": Unicode()})})
foo = Foo()
# key that should be a Dict()...
foo.bar = {"this": "valid", "that": False}The error raised is:
traitlets.traitlets.TraitError: Values of the 'bar' trait of a Foo instance must be a dict, but a value of False <class 'bool'> was specified.
It would be better if it specified the offending chain of keys in the error... Example:
traitlets.traitlets.TraitError: Value of bar['that'] for a Foo instance must be a dict, but the specified value at bar['that'] was False <class 'bool'>.
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