Method with_columns

python/pathway/internals/table.py:1865–1894

Updates columns of `self`, according to args and kwargs. See `table.select` specification for evaluation of args and kwargs. Example: >>> import pathway as pw >>> t1 = pw.debug.table_from_markdown(''' ... | age | owner | pet ... 1 | 10 | Alice | 1

(self, *args: expr.ColumnReference, **kwargs: Any)

    @trace_user_frame
    @desugar
    def with_columns(self, *args: expr.ColumnReference, **kwargs: Any) -> Table:
        """Updates columns of `self`, according to args and kwargs.
        See `table.select` specification for evaluation of args and kwargs.

        Example:

        >>> import pathway as pw
        >>> t1 = pw.debug.table_from_markdown('''
        ...   | age | owner | pet
        ... 1 | 10  | Alice | 1
        ... 2 | 9   | Bob   | 1
        ... 3 | 8   | Alice | 2
        ... ''')
        >>> t2 = pw.debug.table_from_markdown('''
        ...   | owner | pet | size
        ... 1 | Tom   | 1   | 10
        ... 2 | Bob   | 1   | 9
        ... 3 | Tom   | 2   | 8
        ... ''')
        >>> t3 = t1.with_columns(*t2)
        >>> pw.debug.compute_and_print(t3, include_id=False)
        age | owner | pet | size
        8   | Tom   | 2   | 8
        9   | Bob   | 1   | 9
        10  | Tom   | 1   | 10
        """
        other = self.select(*args, **kwargs)
        columns = dict(self)
        columns.update(other)
        return self.select(**columns)

    @trace_user_frame
    @desugar