o jgfу@s<dZddlmZddlmZddlmZGddДdeГZdS)zA Contains the base class for series Made using sequences in mind щ)┌Expr)┌S)┌cacheitc@sДeZdZdZeddДГZeddДГZeddДГZedd ДГZed dДГZ edd ДГZ eddДГZddДZ ddДZddДZddДZdS)┌ SeriesBasezBase Class for seriescCєtd|ГВ)z+The interval on which the series is definedz (%s).intervalй┌NotImplementedErrorй┌selfйr·Q/var/www/html/zoom/venv/lib/python3.10/site-packages/sympy/series/series_class.py┌intervalєzSeriesBase.intervalcCr)z8The starting point of the series. This point is includedz (%s).startrr rrr┌startrzSeriesBase.startcCr)z6The ending point of the series. This point is includedz (%s).stoprr rrr┌stoprzSeriesBase.stopcCr)zLength of the series expansionz(%s).lengthrr rrr┌lengthrzSeriesBase.lengthcCsdS)z-Returns a tuple of variables that are boundedrrr rrr┌ variables"szSeriesBase.variablescCsddД|jDГа|jбS)zР This method returns the symbols in the object, excluding those that take on a specific value (i.e. the dummy symbols). cSsh|] }|jD]}|ТqqSr)┌free_symbols)┌.0┌i┌jrrr┌ -єz*SeriesBase.free_symbols..)┌args┌ differencerr rrrr's zSeriesBase.free_symbolscCs0||jks ||jkrtd||jfГВ|а|бS)zTerm at point pt of a serieszIndex %s out of bounds %s)rr┌ IndexErrorr ┌ _eval_termйr ┌ptrrr┌term0s zSeriesBase.termcCstd|jГВ)NzhThe _eval_term method should be added to%s to return series term so it is availablewhen 'term' calls it.)r┌funcrrrrr7s¤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)rr┌NegativeInfinityr)r r┌initial┌steprrr┌ _ith_point=szSeriesBase._ith_pointccs@Бd}||jkr|а|б}|а|бV|d7}||jksdSdS)Nrr")rr&r)r rrrrr┌__iter__QsА ¤zSeriesBase.__iter__cstt|tГrИа|б}Иа|бSt|tГr8|j|j}}|dur!d}|dur(Иj}ЗfddДt|||j p4dГDГSdS)Nrcsg|] }ИаИа|ббСqSr)rr&)rrr rr┌ brz*SeriesBase.__getitem__..r") ┌ isinstance┌intr&r┌slicerrr┌ranger%)r ┌indexrrrr r┌__getitem__Xs ·zSeriesBase.__getitem__N)┌__name__┌ __module__┌__qualname__┌__doc__┌propertyr rrrrrrrrr&r'r.rrrrrs( rN)r2┌sympy.core.exprr┌sympy.core.singletonr┌sympy.core.cacherrrrrr┌s