Method _get_colref_by_name

python/pathway/internals/table.py:199–207

(self, name, exception_type)

        return all([col.properties.append_only for col in self._columns.values()])

    def _get_colref_by_name(self, name, exception_type) -> expr.ColumnReference:
        name = self._column_deprecation_rename(name)
        if name == "id":
            return self.id
        if name not in self.keys():
            raise exception_type(f"Table has no column with name {name}.")
        return expr.ColumnReference(
            _table=self, _column=self._get_column(name), _name=name
        )

    @overload
    def __getitem__(self, args: str | expr.ColumnReference) -> expr.ColumnReference: ...