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data = instance.__dict__ # get the specific Student instance's symbol table
field_name = self.field.attname # pull out the field name (first name, in our case)
if data.get(field_name, self) is self:
# Let's see if the field is part of the parent chain. If so we
# might be able to reuse the already loaded value. Refs #18343.
val = self._check_parent_chain(instance) # check if this value is already pulled down from the db upstream
if val is None:
val = getattr(instance, field_name)
data[field_name] = val # set the student instance __dict__ key for future attribute lookups!
return data[field_name]
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