g .ddlmZddlmZddlmZddlmZddlmZddlmZddlm Z ddlm Z dd l m Z er dd l mZdd lZdd lZdd lmZdd lmZdd lmZddZ d ddZ d ddZdddddeededd ZGddZ ddZy ) ) annotations)copy) TYPE_CHECKING)Any)Callable)Sequence)is_simple_aggregation)parse_into_exprs) remove_prefixN DaskLazyFrame) IntoDaskExpr) CompliantExprcHddlm}dd}dd}|jd||S)Nrc&|jdS)NF)dropna)nunique)ss L/var/www/openai/venv/lib/python3.12/site-packages/narwhals/_dask/group_by.pychunkzn_unique..chunksyyy&&c"|jS)N)sum)s0s raggzn_unique..aggs vvxrr)namerr)r%pd.core.groupby.generic.SeriesGroupByreturnint)rrrr)dask.dataframe dataframe Aggregation)ddrrs rn_uniquer$s-' 2>>   rcfddlm}ddl}||jjj |SNr)partial)ddof) functoolsr' dask_expr_groupbyGroupByvarr(r'dxs rr-r-'' " 2;;&&** 66rcfddlm}ddl}||jjj |Sr&)r)r'r*r+r,stdr.s rr2r23r0rrmeanmedianmaxminsizecount) rr3r4r5r6r2r-lenr$r8c@eZdZ ddZ ddZddZy)DaskLazyGroupByc||_||_|jjjt |j|d|_y)NT)robserved)_df_keys _native_framegroupbylist_grouped)selfdfkeysdrop_null_keyss r__init__zDaskLazyGroupBy.__init__NsE ..66  !7  rcZt|d|jji|}t|j}|D]6}|j d}t ||j|j 8t|j|j||j|jS)N namespacezAnonymous expressions are not supported in group_by.agg. Instead of `nw.all()`, try using a named expression, such as `nw.col('a', 'b')` ) r r>__narwhals_namespace__rr? _output_names ValueErrorextendagg_daskrC_from_native_frame)rDaggs named_aggsexprs output_namesexprmsgs rrzDaskLazyGroupBy.aggYs !  hh557   #'tzz"2 D!!)+ !o%    2 2 3 HH MM  JJ  # #   rctddlm}|||jj|jjS)Nrr )backend_versionversion)narwhals._dask.dataframer r>_backend_version_version)rDrEr s rrPz"DaskLazyGroupBy._from_native_framews-:  9 9488CTCT  rN)rEr rF list[str]rGboolrNone)rQrrRrrr )rEr rr )__name__ __module__ __qualname__rHrrPrrr;r;MsM    '0  EI      #    < rr;c |s|j|j|Sd}|D]-}t|rt|jdt vr+d}n|ri}|D]c}|j dk(rs|j d}t|t j|j|j} |j|jD cic] } | |d| f c} |j dk7s|j |j d}t|t|jd} | dvrd |jjd dini} t j| | } t| r| d i| n| } |jt|j|jD cic] \} } | | | f c} } f|jd i|}||j!Sd }t#|cc} wcc} } w) zThis should be the fastpath, but cuDF is too far behind to use it. - https://github.com/rapidsai/cudf/issues/15118 - https://github.com/rapidsai/cudf/issues/15084 )subsetTzcol->Frz_Safety assertion failed, please report a bug to https://github.com/narwhals-dev/narwhals/issues>r2r-r(avNon-trivial complex aggregation found. Hint: you were probably trying to apply a non-elementary aggregation with a dask dataframe. Please rewrite your query such that group-by aggregations are elementary. For example, instead of: df.group_by('a').agg(nw.col('b').round(2).mean()) use: df.with_columns(nw.col('b').round(2)).group_by('a').agg(nw.col('b').mean()) rc)selectuniquer r _function_namePOLARS_TO_DASK_AGGREGATIONS_depthrLAssertionErrorgetupdate _root_names_kwargscallablezipr reset_indexrM)rEgroupedrSrFfrom_dataframeall_simple_aggsrUsimple_aggregationsrV function_name output_namekwargs agg_function root_name result_simples rrOrOsE ryy$&&d&33O !$ 'd117;?ZZ#O  KMD{{a%%-{C(-- ; ? ?'')<)<! $**,0+=+=+=K$d1g}%==+=  q D$4$4$<@R@R@Zw$S)))$*=*=wGM!N2))&!45  7::=-XL+3<*@ &v&l  & &36(($*<*<33. ; )\!::3 M\$ :&9: m779:: ^ S/a8s G9 *G> )rzdd.Aggregation)rf)r(rrzXCallable[[pd.core.groupby.generic.SeriesGroupBy], pd.core.groupby.generic.SeriesGroupBy]) rEr rtrrSz)Sequence[CompliantExpr[dask_expr.Series]]rFr]ruzCallable[[Any], DaskLazyFrame]rr ) __future__rrtypingrrrrnarwhals._expression_parsingr r narwhals.utilsr r r!r#r*pandaspdrZr narwhals._dask.typingrnarwhals.typingrr$r-r2rjr;rOrcrrrs" >9(62- " 7  7 7 7  7 7         / / dVV V 5V  V 3 V  Vr