''' arnebef@tumnus:~$ python jythonerror.py True True Set([]) Set([]) [] arnebef@tumnus:~$ jython jythonerror.py 1 0 Set([]) Set([1.3500095445145073]) [1.342099698220622] arnebef@tumnus:~$ jython --version Jython 2.2.1 on java1.6.0_06 arnebef@tumnus:~$ ''' a = [1.1229367069429546, 1.2499898409605505, 1.3077504789032932, 1.3022401090763198, 1.2795359921593277, 1.2932732533895237, 1.3311603145653486, 1.2843823428782681, 1.2984533727566958, 0.965488891055352, 1.0627682081527097, 1.065204296253232, 0.9730881604621469, 0.9833380747929671, 0.9735991940879917, 0.9635488392986763, 0.9613276678337398, 0.9571809922580657, 1.0493393333964, 1.0100061624640788, 1.04277759007677, 1.0411225442704126, 1.0565091479282074, 1.0464860880244633, 1.0584029335322716, 1.053510259975599, 1.0378163684824984, 1.010620066458246, 1.0528419311043915, 1.0553585944631734, 0.9799465512621478, 0.9832300908310291, 0.9862692130943636, 0.9721688162741493, 0.9463000995451846, 1.0101416913339787, 1.0040391982289054, 1.0283283420660931, 0.9435821107224384, 1.0145332862285217, 1.0178634088753344, 0.9986196829203949, 1.0297075444774697, 1.0268713257723399, 1.0636186814761392, 1.0915567199188003, 0.9914045562018287, 0.9849572686848757, 0.9494980721738205, 1.089372055244081, 1.171073844211444, 1.2036361653094467, 1.1387650989386005, 1.134165258488872, 1.1924625802312385, 1.184230909079861, 1.1846502210807097, 1.1490414897286076, 1.1698343788472514, 1.2071760369586237, 1.2209562400288148, 1.2168002172965058, 1.112315774129473, 1.231126449124998, 1.1969967013515865, 1.161152819166167, 1.1963846454103946, 1.1904328763183225, 1.1736970650266998, 1.1728599151609622, 1.1539035885752584, 1.2207580900083188, 1.178152264651682, 1.244716453925234, 1.1779524074768422, 1.233393244842195, 1.1702506312459202, 1.195954286368102, 1.2510481320550249, 1.219986377817211, 1.1749485433193292, 1.1680618602811508, 1.1986304254948374, 1.2140143410949071, 1.1717668568352773, 1.212275906282051, 1.1460482499015634, 1.12807170963091, 1.22585815483005, 1.2458656264722345, 1.0407429252023295, 1.0494889873422981, 1.0677697418606165, 1.0677723531014953, 1.0431182979933689, 1.0226498362810479, 1.0246149218480156, 1.020823058893289, 1.0487220778932096, 1.0374724686269428, 1.021158157787931, 0.9956324839587665, 0.971008798345832, 0.9920333352169495, 0.950121976522392, 1.019330108051021, 0.9987298911014828, 0.9470269561163047, 0.9605534379853079, 0.9815994687072684, 1.0261176072869522, 0.996490702370084, 1.0201660632321359, 1.0012069134308987, 0.2601640602220746, 0.25666925832713683, 0.27922232656913293, 0.23724920314030953, 0.25283947723305555, 0.21648753956830413, 0.24688651104346376, 0.2455324022443769, 0.18215313782588144, 0.17725728190257042, 0.3180349798393714, 0.1574867394552336, 0.1983717309819372, 0.1912240578380305, 0.24352344176718277, 0.24285401294852055, 0.2066524858912641, 0.1727728105448888, 0.23137629581157168, 0.22455211458837465, 0.22845144198247833, 0.19623244748266308, 0.1917084441629494, 0.2336143141742542, 0.1611224696817182, 0.2142567331935847, 0.224571874344177, 0.16479094927552945, 0.1907342978038375, 0.26021668621677757, 0.2089604447321753, 0.2265785051157526, 0.21469033197872583, 0.0, 0.2509368994930586, 0.2199221886577039, 0.2648839453477585, 0.21392752176106075, 0.21998440848563247, 0.22387582149894283, 0.3001190454333501, 0.18382745604449596, 0.23114317516743066, 0.24329634830606056, 0.2950528129593322, 0.24637890984104846, 0.2292244927870311, 0.24258019098462422, 0.19705610754689096, 0.17497898369740578, 0.16693705825696, 0.20602416647160654, 0.24780092871542042, 0.14618364959620536, 0.18200431345686058, 0.18468521106934138, 0.24491574114364673, 0.20448076935083223, 0.1679766401347596, 0.2527615666228714, 0.27262114499408435, 1.3400992056647083, 1.3260941311771324, 1.3500095445145073, 1.330279169667136, 1.3395764910469699, 1.342099698220622, 1.3630001839119303, 1.3550552537736364, 1.3762949999144964, 1.373640098382052, 1.3669821482044187, 1.367053415363813, 1.350200320196399, 1.3825864788874698, 1.3682051424095563, 1.365020780602198, 1.4040803196936202, 1.4086123108223487, 1.523176871010287, 1.5099335389756132, 1.4485790699613763, 1.3756262639110657, 1.38705563301416, 1.3881179405628399, 1.3745604096632167, 1.3839379784836476, 1.3852175568009386, 1.4087677309350606, 1.402714845042022, 1.4138497501542093, 1.3959519533820417, 1.4183974266530466, 1.4123766685794816, 1.4074238250474496, 1.4051466484635764, 1.4112788040839122, 1.4141170789566615, 1.4150122325662966, 1.450506143797603, 1.4375123414062272, 1.419824592107291, 1.4137757785598826, 1.4586171935430012, 1.4306765355094038, 1.4289333225653358, 1.4521894792815804, 1.444996441628537, 1.4579980025567727, 1.4724091607721226, 1.4112891255192215, 1.5125572365271676, 1.46151258686928, 1.482092704623251, 1.4340217044932717, 1.457469605521599, 1.4464677439285452, 1.4285086905055868, 1.3930821539217886, 1.4010453491200123, 1.3852851747584267, 1.3901545582963677, 1.412405956451108, 1.409122056328639, 1.4043399450918834, 1.404662383011724, 1.4462853518507852, 1.4282353421799316, 1.4473325979840013, 1.3881299170929906, 1.430203129182874, 1.423148652362149, 1.4576946770477943, 1.4418010278574118, 1.4556607271069675, 1.4772687396794344, 1.4746172627468435, 1.5415055847406158, 1.507109566983958, 1.4872503775925534, 1.4078725297140855, 1.426401560210255, 1.4505942520625885, 1.4230377977518038, 1.4195275905402012, 1.4427162985011277, 1.449804021335441, 1.4927826191928957, 1.487881648678267, 1.4970295819556876, 1.5281822847673743, 1.4645746203867063, 1.4273283798670235, 1.431925058938081, 1.54186620283903, 1.437077651596773, 1.4357746793828767, 1.4692900156524864, 1.4213031374400726, 1.4124541553551109, 1.3955469487348995, 1.4732219525488246, 1.4075368859637718, 1.4430511054167945, 1.451313658942473, 1.5202623690637898, 1.440544664144194, 1.4500265819967337, 1.486765627173457, 1.482251462654285] print 1.3500095445145073 in a a.sort() print 1.3500095445145073 in a #The result should be this (checked with cpython): b = [0.0, 0.14618364959620536, 0.15748673945523359, 0.1611224696817182, 0.16479094927552945, 0.16693705825696001, 0.1679766401347596, 0.1727728105448888, 0.17497898369740578, 0.17725728190257042, 0.18200431345686058, 0.18215313782588144, 0.18382745604449596, 0.18468521106934138, 0.19073429780383749, 0.19122405783803051, 0.19170844416294941, 0.19623244748266308, 0.19705610754689096, 0.19837173098193719, 0.20448076935083223, 0.20602416647160654, 0.20665248589126409, 0.20896044473217529, 0.21392752176106075, 0.21425673319358471, 0.21469033197872583, 0.21648753956830413, 0.21992218865770391, 0.21998440848563247, 0.22387582149894283, 0.22455211458837465, 0.224571874344177, 0.22657850511575259, 0.22845144198247833, 0.22922449278703111, 0.23114317516743066, 0.23137629581157168, 0.23361431417425421, 0.23724920314030953, 0.24258019098462422, 0.24285401294852055, 0.24329634830606056, 0.24352344176718277, 0.24491574114364673, 0.24553240224437689, 0.24637890984104846, 0.24688651104346376, 0.24780092871542042, 0.25093689949305858, 0.25276156662287141, 0.25283947723305555, 0.25666925832713683, 0.26016406022207461, 0.26021668621677757, 0.2648839453477585, 0.27262114499408435, 0.27922232656913293, 0.29505281295933222, 0.30011904543335011, 0.3180349798393714, 0.94358211072243836, 0.94630009954518457, 0.94702695611630472, 0.94949807217382054, 0.95012197652239205, 0.95718099225806574, 0.9605534379853079, 0.9613276678337398, 0.9635488392986763, 0.96548889105535196, 0.97100879834583198, 0.97216881627414931, 0.97308816046214686, 0.97359919408799167, 0.9799465512621478, 0.98159946870726844, 0.98323009083102908, 0.98333807479296709, 0.98495726868487565, 0.98626921309436355, 0.99140455620182866, 0.99203333521694947, 0.99563248395876647, 0.99649070237008397, 0.99861968292039494, 0.9987298911014828, 1.0012069134308987, 1.0040391982289054, 1.0100061624640788, 1.0101416913339787, 1.0106200664582461, 1.0145332862285217, 1.0178634088753344, 1.0193301080510211, 1.0201660632321359, 1.0208230588932889, 1.021158157787931, 1.0226498362810479, 1.0246149218480156, 1.0261176072869522, 1.0268713257723399, 1.0283283420660931, 1.0297075444774697, 1.0374724686269428, 1.0378163684824984, 1.0407429252023295, 1.0411225442704126, 1.04277759007677, 1.0431182979933689, 1.0464860880244633, 1.0487220778932096, 1.0493393333964001, 1.0494889873422981, 1.0528419311043915, 1.053510259975599, 1.0553585944631734, 1.0565091479282074, 1.0584029335322716, 1.0627682081527097, 1.0636186814761392, 1.065204296253232, 1.0677697418606165, 1.0677723531014953, 1.0893720552440811, 1.0915567199188003, 1.1123157741294729, 1.1229367069429546, 1.1280717096309101, 1.134165258488872, 1.1387650989386005, 1.1460482499015634, 1.1490414897286076, 1.1539035885752584, 1.1611528191661671, 1.1680618602811508, 1.1698343788472514, 1.1702506312459202, 1.1710738442114439, 1.1717668568352773, 1.1728599151609622, 1.1736970650266998, 1.1749485433193292, 1.1779524074768422, 1.178152264651682, 1.1842309090798611, 1.1846502210807097, 1.1904328763183225, 1.1924625802312385, 1.1959542863681021, 1.1963846454103946, 1.1969967013515865, 1.1986304254948374, 1.2036361653094467, 1.2071760369586237, 1.212275906282051, 1.2140143410949071, 1.2168002172965058, 1.2199863778172111, 1.2207580900083188, 1.2209562400288148, 1.22585815483005, 1.231126449124998, 1.2333932448421949, 1.244716453925234, 1.2458656264722345, 1.2499898409605505, 1.2510481320550249, 1.2795359921593277, 1.2843823428782681, 1.2932732533895237, 1.2984533727566958, 1.3022401090763198, 1.3077504789032932, 1.3260941311771324, 1.3302791696671361, 1.3311603145653486, 1.3395764910469699, 1.3400992056647083, 1.3420996982206219, 1.3500095445145073, 1.350200320196399, 1.3550552537736364, 1.3630001839119303, 1.3650207806021979, 1.3669821482044187, 1.367053415363813, 1.3682051424095563, 1.373640098382052, 1.3745604096632167, 1.3756262639110657, 1.3762949999144964, 1.3825864788874698, 1.3839379784836476, 1.3852175568009386, 1.3852851747584267, 1.3870556330141599, 1.3881179405628399, 1.3881299170929906, 1.3901545582963677, 1.3930821539217886, 1.3955469487348995, 1.3959519533820417, 1.4010453491200123, 1.4027148450420219, 1.4040803196936202, 1.4043399450918834, 1.404662383011724, 1.4051466484635764, 1.4074238250474496, 1.4075368859637718, 1.4078725297140855, 1.4086123108223487, 1.4087677309350606, 1.4091220563286391, 1.4112788040839122, 1.4112891255192215, 1.4123766685794816, 1.412405956451108, 1.4124541553551109, 1.4137757785598826, 1.4138497501542093, 1.4141170789566615, 1.4150122325662966, 1.4183974266530466, 1.4195275905402012, 1.419824592107291, 1.4213031374400726, 1.4230377977518038, 1.423148652362149, 1.4264015602102551, 1.4273283798670235, 1.4282353421799316, 1.4285086905055868, 1.4289333225653358, 1.4302031291828741, 1.4306765355094038, 1.431925058938081, 1.4340217044932717, 1.4357746793828767, 1.4370776515967729, 1.4375123414062272, 1.4405446641441939, 1.4418010278574118, 1.4427162985011277, 1.4430511054167945, 1.444996441628537, 1.4462853518507852, 1.4464677439285452, 1.4473325979840013, 1.4485790699613763, 1.4498040213354411, 1.4500265819967337, 1.450506143797603, 1.4505942520625885, 1.4513136589424731, 1.4521894792815804, 1.4556607271069675, 1.457469605521599, 1.4576946770477943, 1.4579980025567727, 1.4586171935430012, 1.46151258686928, 1.4645746203867063, 1.4692900156524864, 1.4724091607721226, 1.4732219525488246, 1.4746172627468435, 1.4772687396794344, 1.482092704623251, 1.4822514626542851, 1.4867656271734571, 1.4872503775925534, 1.4878816486782671, 1.4927826191928957, 1.4970295819556876, 1.507109566983958, 1.5099335389756132, 1.5125572365271676, 1.5202623690637898, 1.5231768710102871, 1.5281822847673743, 1.5415055847406158, 1.54186620283903] from sets import Set print Set(a).difference(Set(b)) print Set(b).difference(Set(a)) for o in b: if o in a: a.remove(o) print a