U L?Эhfу@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 seriescCstd|ГВdS)z+The interval on which the series is definedz (%s).intervalNй┌NotImplementedErrorй┌selfйr ·K/var/www/html/venv/lib/python3.8/site-packages/sympy/series/series_class.py┌intervalszSeriesBase.intervalcCstd|ГВdS)z8The starting point of the series. This point is includedz (%s).startNrrr r r┌startszSeriesBase.startcCstd|ГВdS)z6The ending point of the series. This point is includedz (%s).stopNrrr r r┌stopszSeriesBase.stopcCstd|ГВdS)zLength of the series expansionz(%s).lengthNrrr r r┌lengthszSeriesBase.lengthcCsdS)z-Returns a tuple of variables that are boundedr r rr r r┌ 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┌jr r r┌ -sz*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.|jtjkr|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}}|dkrBd}|dkrPИj}ЗfddДt|||j phdГDГSdS)Nrcsg|]}ИаИа|ббСqSr )rr#)rrrr r┌ bsz*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)r/Zsympy.core.exprrZsympy.core.singletonrZsympy.core.cacherrr r r r┌s