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This excludes anything which involves iterating over rows in Python. - 'interchange': only metadata operations are supported (`df.schema`) )rfr]s r get_levelrs ::rc&eZdZeddZddZy)Whenc*||jdS)Nr)chain) _predicate)rwhens r from_whenzWhen.from_whens4??"--rcfg|j|j|f}tj|Sr)_chainrThen _from_chain)rr new_chains rthenz When.thens/>rr cLtjtj|Sr)rr nw_fr)rs rrrs >>$))Z0 11r)required)rnative_namespacecJtd|}tt||||S)a=Instantiate Narwhals Series from iterable (e.g. list or array). See `narwhals.new_series` for full docstring. Note that `native_namespace` is an is the same as `backend` but only accepts module types - for new code, we recommend using `backend`, as that's available beyond just `narwhals.stable.v1`. rr)r rr%)rrrrrs r new_seriesrs(.8G &tVUGL MMrcZtd|}ttj||S)aJConstruct a DataFrame from an object which supports the PyCapsule Interface. See `narwhals.from_arrow` for full docstring. 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