12 июн. 2024 г. · There is pl.Expr.list.join in polars' native expression API to join all string items in a sublist with a separator between them.

4 нояб. 2024 г. · I am transitioning from pandas to polars right now. I have a polars df with differently nested lists like this.

6 сент. 2023 г. · I have a polars dataframe with a column that contains lists of lists. like this: df = pl.DataFrame({ "nodes": [[[1], [1,2], []], [[2]], [[1], [2]]] })

30 окт. 2023 г. · Want to merge the lists of lists during a groupby and aggregate on the id and name. Want the result to show a string concatenated value.

25 окт. 2023 г. · One way to achieve the desired result is to concatenate the two dataframe to join and add them a column order_type.

7 авг. 2024 г. · In polars, when you have to join two dataframes/lazyframes you have to use either tab_1. join(tab_2, on=[certain_column]) or tab_1. join(tab_2, ...

19 мар. 2024 г. · It looks like a join on the exploded lists. It can be kept as a "single expression" by putting it inside .map_batches()

5 сент. 2023 г. · I'm trying to join these two dataframe based on date. Then I would like to still joining via org_id or org_slug or org_name. These generally match.

12 апр. 2023 г. · This combines both into a single list, but I would want to split on the pipe and get the unique values. How can this be achieved?

2 авг. 2023 г. · In the join I explode the list column to get it as rows, do the arithmetic then do a group_by to gather things back into a list for each row and ...