term.py 文件源码

def _validate(self):
        super(ComputableTerm, self)._validate()

        if self.inputs is NotSpecified:
            raise TermInputsNotSpecified(termname=type(self).__name__)

        if self.outputs is NotSpecified:
            pass
        elif not self.outputs:
            raise TermOutputsEmpty(termname=type(self).__name__)
        else:
            # Raise an exception if there are any naming conflicts between the
            # term's output names and certain attributes.
            disallowed_names = [
                attr for attr in dir(ComputableTerm)
                if not attr.startswith('_')
            ]

            # The name 'compute' is an added special case that is disallowed.
            # Use insort to add it to the list in alphabetical order.
            insort(disallowed_names, 'compute')

            for output in self.outputs:
                if output.startswith('_') or output in disallowed_names:
                    raise InvalidOutputName(
                        output_name=output,
                        termname=type(self).__name__,
                        disallowed_names=disallowed_names,
                    )

        if self.window_length is NotSpecified:
            raise WindowLengthNotSpecified(termname=type(self).__name__)

        if self.mask is NotSpecified:
            # This isn't user error, this is a bug in our code.
            raise AssertionError("{term} has no mask".format(term=self))

        if self.window_length:
            for child in self.inputs:
                if not child.window_safe:
                    raise NonWindowSafeInput(parent=self, child=child)