TimeFrame.add_flag

TimeFrame.add_flag(flag_column_name, flag_value, expr=<Expr ['true']>)[source]

Add flag value (if not there) to flag column, where expression is True.

Parameters:

  • flag_column_name (str) – The name of the flag column

  • flag_value (int | str) – The flag value to add

  • expr (Expr) – Polars expression for which rows to add flag to

Return type:

None