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SharedParameter: improve source detection #2142

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merged 1 commit into from
Oct 8, 2021
Merged

SharedParameter: improve source detection #2142

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10 changes: 9 additions & 1 deletion psyneulink/core/globals/parameters.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1775,11 +1775,19 @@ def source(self):
f' cannot be stateful.'
)
obj = obj.values[None]
except (AttributeError, KeyError):
except AttributeError:
try:
obj = getattr(self._owner._owner, self.attribute_name)
except AttributeError:
return None
except KeyError:
# KeyError means there is no stored value for this
# parameter, which should only occur when the source is
# desired for a descriptive parameter attribute value (e.g.
# stateful or loggable) and when either self._owner._owner
# is a type or is in the process of instantiating a
# Parameter for an instance of a Component
obj = getattr(self._owner._owner.defaults, self.attribute_name)

try:
obj = getattr(obj.parameters, self.shared_parameter_name)
Expand Down