Generic __repr__ for sqlalchemy models

gistfile1.txt

    @classmethod
    def _repr_template(cls):
        """
        Creates a class specific template for __repr__
        """
        beginning, middle, end  = ('{}(', "{}={{{}}}", ')')

        table = cls.__table__

        primary_fields = table.primary_key.columns_autoinc_first
        primary_field_names = [column.name for column in primary_fields]

        filter_primary = lambda key: key not in primary_field_names
        other_field_names = filter(filter_primary, table.columns.keys())
        field_names = primary_field_names + other_field_names

        middle = ', '.join((middle.format(name, name) for name in field_names))
        return beginning + middle + end

    def __repr__(self):
        keys_to_repr = {k: v.__repr__() for k, v in self.__dict__.items()}
        class_name = self.__class__.__name__
        template_string = self._repr_template()
        return template_string.format(class_name, **keys_to_repr)