Method with_prefix

python/pathway/internals/table.py:2102–2121

Rename columns by adding prefix to each name of column. Example: >>> import pathway as pw >>> t1 = pw.debug.table_from_markdown(''' ... age | owner | pet ... 10 | Alice | 1 ... 9 | Bob | 1 ... 8 | Alice | 2 ... ''') >>>

(self, prefix: str)

    @check_arg_types
    def with_prefix(self, prefix: str) -> Table:
        """Rename columns by adding prefix to each name of column.

        Example:

        >>> import pathway as pw
        >>> t1 = pw.debug.table_from_markdown('''
        ... age | owner | pet
        ... 10  | Alice | 1
        ... 9   | Bob   | 1
        ... 8   | Alice | 2
        ... ''')
        >>> t2 = t1.with_prefix("u_")
        >>> pw.debug.compute_and_print(t2, include_id=False)
        u_age | u_owner | u_pet
        8     | Alice   | 2
        9     | Bob     | 1
        10    | Alice   | 1
        """
        return self.rename_by_dict({name: prefix + name for name in self.keys()})

    @check_arg_types
    def with_suffix(self, suffix: str) -> Table: