def get_input_space(self):
        if self.input_space is not None:
            return self.input_space
        raise ValueError("No input space was specified for this Block (%s). "
                         "You can call set_input_space to correct that." %
                         str(self))
Provides a 7-item tuple compatible with the Python PEP249 DB Spec.
dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/datasets/preprocessing.py/ExamplewiseUnitNormBlock.get_input_space--crossover with--dataset/ETHPy150Open uwdata/termite-data-server/web2py/gluon/contrib/pymysql/connections.py/FieldDescriptorPacket.description