l_count ](../../dataframe/api/polars.DataFrame.null_count.html)
    * [ Export ](../../dataframe/export.html) __
      * [ polars.DataFrame.__dataframe__ ](../../dataframe/api/polars.DataFrame.__dataframe__.html)
      * [ polars.DataFrame.to_arrow ](../../dataframe/api/polars.DataFrame.to_arrow.html)
      * [ polars.DataFrame.to_dict ](../../dataframe/api/polars.DataFrame.to_dict.html)
      * [ polars.DataFrame.to_dicts ](../../dataframe/api/polars.DataFrame.to_dicts.html)
      * [ polars.DataFrame.to_init_repr ](../../dataframe/api/polars.DataFrame.to_init_repr.html)
      * [ polars.DataFrame.to_numpy ](../../dataframe/api/polars.DataFrame.to_numpy.html)
      * [ polars.DataFrame.to_pandas ](../../dataframe/api/polars.DataFrame.to_pandas.html)
      * [ polars.DataFrame.to_struct ](../../dataframe/api/polars.DataFrame.to_struct.html)
    * [ GroupBy ](../../dataframe/group_by.html) __
      * [ polars.dataframe.group_by.GroupBy.__iter__ ](../../dataframe/api/polars.dataframe.group_by.GroupBy.__iter__.html)
      * [ polars.dataframe.group_by.GroupBy.agg ](../../dataframe/api/polars.dataframe.group_by.GroupBy.agg.html)
      * [ polars.dataframe.group_by.GroupBy.all ](../../dataframe/api/polars.dataframe.group_by.GroupBy.all.html)
      * [ polars.dataframe.group_by.GroupBy.apply ](../../dataframe/api/polars.dataframe.group_by.GroupBy.apply.html)
      * [ polars.dataframe.group_by.GroupBy.count ](../../dataframe/api/polars.dataframe.group_by.GroupBy.count.html)
      * [ polars.dataframe.group_by.GroupBy.first ](../../dataframe/api/polars.dataframe.group_by.GroupBy.first.html)
      * [ polars.dataframe.group_by.GroupBy.head ](../../dataframe/api/polars.dataframe.group_by.GroupBy.head.html)
      * [ polars.dataframe.group_by.GroupBy.last ](../../dataframe/api/polars.dataframe.group_by.GroupBy.last.html)
      * [ polars.dataframe.group_by.GroupBy.len ](../../dataframe/api/polars.dataframe.group_by.GroupBy.len.html)
      * [ polars.dataframe.group_by.GroupBy.map_groups ](../../dataframe/api/polars.dataframe.group_by.GroupBy.map_groups.html)
      * [ polars.dataframe.group_by.GroupBy.max ](../../dataframe/api/polars.dataframe.group_by.GroupBy.max.html)
      * [ polars.dataframe.group_by.GroupBy.mean ](../../dataframe/api/polars.dataframe.group_by.GroupBy.mean.html)
      * [ polars.dataframe.group_by.GroupBy.median ](../../dataframe/api/polars.dataframe.group_by.GroupBy.median.html)
      * [ polars.dataframe.group_by.GroupBy.min ](../../dataframe/api/polars.dataframe.group_by.GroupBy.min.html)
      * [ polars.dataframe.group_by.GroupBy.n_unique ](../../dataframe/api/polars.dataframe.group_by.GroupBy.n_unique.html)
      * [ polars.dataframe.group_by.GroupBy.quantile ](../../dataframe/api/polars.dataframe.group_by.GroupBy.quantile.html)
      * [ polars.dataframe.group_by.GroupBy.sum ](../../dataframe/api/polars.dataframe.group_by.GroupBy.sum.html)
      * [ polars.dataframe.group_by.GroupBy.tail ](../../dataframe/api/polars.dataframe.group_by.GroupBy.tail.html)
    * [ Manipulation/selection ](../../dataframe/modify_select.html) __
      * [ polars.DataFrame.bottom_k ](../../dataframe/api/polars.DataFrame.bottom_k.html)
      * [ polars.DataFrame.cast ](../../dataframe/api/polars.DataFrame.cast.html)
      * [ polars.DataFrame.clear ](../../dataframe/api/polars.DataFrame.clear.html)
      * [ polars.DataFrame.clone ](../../dataframe/api/polars.DataFrame.clone.html)
      * [ polars.DataFrame.drop ](../../dataframe/api/polars.DataFrame.drop.html)
      * [ polars.DataFrame.drop_in_place ](../../dataframe/api/polars.DataFrame.drop_in_place.html)
      * [ polars.DataFrame.drop_nulls ](../../dataframe/api/polars.DataFrame.drop_nulls.html)
      * [ polars.DataFrame.explode ](../../dataframe/api/polars.DataFrame.explode.html)
      * [ polars.DataFrame.extend ](../../dataframe/api/polars.DataFrame.extend.html)
      * [ polars.DataFrame.fill_nan ](../../dataframe/api/polars.DataFrame.fill_nan.html)
      * [ polars.Data