code: def check_me(self):
          "Check that my fields make sense."
          assert len(self.attrnames) == len(self.attrs)
          assert self.target in self.attrs
          assert self.target not in self.inputs
          assert set(self.inputs).issubset(set(self.attrs))
          map(self.check_example, self.examplesf check_me(self):
          "Check that my fields make sense."
          assert len(self.attrnames) == len(self.attrs)
          assert self.target in self.attrs
          assert self.target not in self.inputs
          assert set(self.inputs).issubset(set(self.attrs))
          map(self.check_example, self.examples)
docs: Check that my fields make sense.