[Feature] Return default value in get_property_by_time_period_and_group.

[e-lo]

RoadwayNetwork.get_property_by_time_period_and_group() should allow the return something explicit if it isn't found.

Status

• Defined
• Planned
• Implemented
• Tested

if prop not in list(self.links_df.columns):
            WranglerLogger.warning(
                "Property {} not in links to split, returning as default value: {}".format(
                    prop, default_return
                )
            )
            return pd.Series([default_return] * len(self.links_df))