a ам-єz*SeriesBase.free_symbols..)┌args┌ differencerrr r rr's zSeriesBase.free_symbolscCs0||jks||jkr&td||jfГВ|а|бS)zTerm at point pt of a serieszIndex %s out of bounds %s)r r┌ IndexErrorr┌ _eval_termйr ┌ptr r r┌term0szSeriesBase.termcCstd|jГВdS)NzhThe _eval_term method should be added to%s to return series term so it is availablewhen 'term' calls it.)r┌funcrr r rr7s¤zSeriesBase._eval_termcCs.|jtjur|j}d}n |j}d}|||S)zц Returns the i'th point of a series If start point is negative infinity, point is returned from the end. Assumes the first point to be indexed zero. Examples ======== TODO щ щ)r r┌NegativeInfinityr)r r┌initial┌stepr r r┌ _ith_point=szSeriesBase._ith_pointccs2d}||jkr.|а|б}|а|бV|d7}qdS)Nrr )rr$r)r rrr r r┌__iter__Qs zSeriesBase.__iter__cstt|tГrИа|б}Иа|бSt|tГrp|j|j}}|durBd}|durPИj}ЗfddДt|||j phdГDГSdS)Nrcsg|]}ИаИа|ббСqSr )rr$)rrrr r┌ brz*SeriesBase.__getitem__..r ) ┌ isinstance┌intr$r┌slicer rr┌ranger#)r ┌indexr rr rr┌__getitem__Xs zSeriesBase.__getitem__N)┌__name__┌ __module__┌__qualname__┌__doc__┌propertyrr rrrrrrrr$r%r,r r r rrs& rN)r0Zsympy.core.exprrZsympy.core.singletonrZsympy.core.cacherrr r r r┌s