ÿØÿà JFIF    ÿÛ „ !.%+&8&+/1555$;@;4?.451 4,$,44444444444414444444444444444444444444444444444444ÿÀ  á á" ÿÄ     ÿÄ ?    !1AQaq"2‘¡±ÁðBRbrÑá#‚’¢²3S CñÿÄ   ÿÄ !    !1QAa‘2ÿÚ   ? 5˜Z¯V¦cø)›t/? z¨±>Õ5€¶‹Á¤·¼z¼Ü¬+ñ®v¤¨_ˆR­BFn©—˜ý®ç̝P8gýt·ÉSTŦˆìät?þé¼íìN/Þa)ì–í6ô… Ï¿øÃj´¿KÇü]ÿ ªô¹-eKànëÕHTx}ýSÜ›ÿ ”7Ø×&µ<¦  ¥ÑO¶[Ù¯ä¨ÞÃÿ PZ-¬;#õ|•oaÿ ©CìÞz3˜öː/¤­ñTûIØ}š^ mÓ%ªxˆ¥ÉŸu=Z+ISe¿45™¼u;ú&WØ÷€æßQ™®{|íx*TC“#ZŠìZ§²‹ 6pv…³¿¡äª*áZÐ%ÒOáˆo"x«OHk w±æ+¬V(kMúŸ5Vö«$ ÁrÏbàb57/luR ¸ÑÛj Òµì`Ðœq­û žICÀÊ•©4€Âcà¨Ï€O´<èÐ:›ù(Ë^L8þ‘ÍÌ#¸Ð_Ì©ÙK(Öz 4¬û+¸;ü’V’84‘¬ÃŽ:[â‡ÔÌáõp¢~§ªlæ£ö{®G>J¼"°‡7¯ÆÉèßû ‹É‹§ÁòÃýâßî ^ƾÙõ‹×óH#«LP½ïX=xÑÍ$|W?•~• îëÔ©ª‹ {ÝT…Kÿ ”hûâá)J*ö˜–ÔU;iÇ€/ ÆþjóZ\ýwØ=Ìm ºèËL9 ýèÆð/¨’¥öo=nË.%Îì ŽÕ¯È|{Oj²ƒE6e/ßdÄõ²Ìâ1O®ò×TsəԸhOMýíMˆ¿¼H˜l²,7Â¥#MF/Úf°Ö½± ¸–dr‹NýÊ íjqx{œÉ ä-È ¦ øÄër¨q°ð †nцýÑÄÆ’mä…n<0È™;ÁÝá¯ÁZƒ7FÀmì­ É&9ˆîéi¶ùN§Y• ÃZãAâ?•‡©‰ , ó¾IŸŠc1 4â&y­&pŠ­6;M À 0¹qç»p.á …ŸÅáK@%6·y6ƒ‰3?”úºŽ‰éX5ªPT §µ!=Mž«Ú½‹ÅgÂSâÉaþÓoö–¯ÁÔìR>5éÿ üs¶ÆUcÌ kÇR ]ÿ ù¬¼«VŽ;Â|‡~¢¦”ÏÅ°æ {L™Õ°Óv¹ò¸írŽ¡×¢CÃ!íVÕ {¶»sŒNPg/ "uÕbkm²“$ďå¿é¹§°½æz¯6 †s¿!s–wÚÝ“™Œ °.ûj>·+™Òa…©Œ&rÝÎtÛë긪Ît’LAVp%c Úý[ÄzJ¾ÇàXXç@˜ó<êL]·T˜¾¥1Ó©V‡g´æ½¦Ý@¹óø!_@´ÞâSÁ —S3™•& ]@JHÚý©ZŽ €×æÔr»Áf!‡yÞ4Mv*èÓã_{‘åóUuљØ«Oïé*®EvÑ Œ÷‡U \"㪒ÍK+À 4“M¡ï:0¥5í!'<@î´”>Ç»&Z–ïCCV˜Ì5Šo&îhè.žû |ÓK©h$s6KìŒëã)¹hI¦GïOåóI;ììü#É$Š0…Ææ¥TØ.5­¾gn´ “ÂÖ\:hœ89G)J@„}œ:’Ò{/Š"¦_Æ×7Æ3VÇŠÊa]ÚŒÙ€Ä–=®uÁßâACZƒ§§£ Qnâ:«,×{tyø¬iÛcœÜÄ€H½ÄÍCk´÷šß .W'b¤Íåh]÷€=,Žv×cÚEÚHXJX¶îo¨FÒtèöŸ>ªª6[J®Fµ£sGÁeqõfe\íjÒÐïÄÐGˆe1Ø‹.Ø”‘Ëuø Y­ˆÜ ŽG|zùªüMpDnQWÄ”%JŠ™)â*p@Örš«ÕT2Ð%ˆG#ª„ ·¤!°ŸOTÂT¸aÚ%4&h™LµšØüÐ.F¿²ÐÞ_Ç‚¾ÅÃaÜ÷09Æ q€öy˜v‡85õN÷]¬äѼóS{°_MŽ¬úÔ#°Ç¸0åÞè2ëôPcvÆw9®ií1Ä8F™˜à‰´+‰Ik1òÝ7“Ñ×ÒsÝ\x‚h`ÞÑ`ó"|µEcý£n˜h`}GÞ !±ù²Ápü²ß6 0ïi󜵩SÈÇ7˜-ÕURO˜¦´f$ªž-Í6(œ}<„ éc øs]ŽŽ„*—¾ ìdŽ„)méª\¿êÎIg¾ØÞ~I#C/¼¼´EÁÈŽi8“©õådô·>euä ƒ'Ê×लR1ÉJE1ÐAát`t;ÇР%Ý<‡¥„ÍÆ`×Oyó)õiI€ñQaŸ4Ûù\áàaÃÔ¹HÃu¹*k€¦<„e S‡&õÏ B!ŽhüÞ`yj}mªf×\¿ Ç~æ­9‡û\՞Ǖg²1Žû5V7 !àöšm° c`ܬøÇìµÒ'P"?…´Ö,"§^•õŽ¨sÔ)6˜sæéÍR¼ ò|Sl”‹7 nPW Gòú÷½§O¯‡„l¡kSÞŒr½PÊ@æ¢pŽ-mÿ #Ÿ˜Àº¶Áä¦;ïÔæ$1££`“Õ>„—·ž)ßð³ñ#Ï Ô$¶œ‰ÊE‹À;÷º ¯«P:Ñ”8–IÊtpÞ3ª“>ê“þës4ò2OÏÕ­±zô†Õ§‰.÷ä¸;¿˜“'œ›žª}«Œ{ª±Ì 9ÔóÞÕ‡0 $íWV3Üì¬ —@kÝ4@¿r¼±½¬™›?øØæ´'Áé®CË3-g$˜ö‡×auÚi´Žp/êÛ æF›Ú2v‹ã¿¿,nB1̨ƃqÞa5͝@&Æû“él÷ \C²½UÍc ¯k×¢U ÖéQå™—-r wô ÞÏ<Ò=&=ÿ Ôê Òêˈt,i—;LîÜ á¸*ÚÃ1$êL•LÍ <É)ýÐà’ ;F™{ƒ™˜€&'}‚ãÄK`¡ÞT@I;®žZóè‚s’7®°›+§O­Åq©é»²9<Ô J ¼9O’HL»Ùïì¸rk¼Ž_ý‘TŸu[²ßÚŒ·ü÷B%¯E ŸÔX5êO´ Ç•€’I0 ÉJX` ñ¹õ%;µŸD‘«´€àwÒ™U ûئžÖö\×®×´8 ½‡ºÐÆÓ§?Àkmœ=;d5*@-ì0F Rªýš[Ü6âö̃ڸr*KA9· u*µæ£?U¸Âêí†8@¦X4 e-ò„0s{ HâUpU?¼mñRa°®a%Ð'tÉ×’\¾ÊÉ]t›h>·(Ë@R¼¡Ãt h}’O÷au<+nT…Ö…MӐ??Óe95 q>í/;&JSû °¯ÊéÞ øƒ*Ã2½Ài&:nôUl=¾¿5eˆ3”ñc|Ú2V”>„»&eE;«ÚäC p¢Û úy 9š[ŒÌx¼擼A&DåÒ¯ˆ¤ÀÌ;"˜ ÏQä¸åhÊ}Ûq«Û0WžÒ|»€ø®öCm5•\ÇÀ§Pe3£]0ÃàLDÉ‰1øªxjgwT‚÷¿LΨK‹›ùs—xˆÜ±µ kæ¸f‰‰ÜGk/LÛØ6d9ò¶ùA{ƒA3š/¬D¬khÓk‰`˜"㯒r¿±Óã jx‡°e}<Ñø\3y:'À•/h½Í€Ç4~g ?Û(¼]v‘ªlKÎâ~?O‚W%{Ì:“'©úNq¾›úo(X’¥¯ˆ nFê{Ç€ü?º'ë ø‹ì Þ09ŒÌç9Æ —ËC`j@ÓÄ(+a‹un¸#ÂꟋ{K`‘ÑÍÍ'à´»/Û,KW;Þ4²þð ï Nm|~fGÏ(…³Ã)«1ö­Õ ¥‡¨©ƒÃ™ü-s=à=U66Ï«Ýc蓦W¹íž®›nÔ%êÇìŒ<#Ü×84ån®Ð ÒåOC` ñânÑs‡¢ç 1õ%Îhì½Ã½® e:ݼUZo™`  ÅZŸŒÊ«ê1ÏÄo$q¹Þ€©ˆhÐÉä¯ñ[!…Ú˜àJ:x2$Íß&PåT£6ç— ‡Í*4Ýšçjÿ ‰É nófÐ ó(L5C•åÆ\rMÒ@ò }y-W}™üýVù—ú¢=Ù”c®‘< M ž ´Phr ¦©TD ‘ù.$´÷O‡‘V2Æò.=IUŒ=ž‡â¬i™aþÓåÙ?òUø'ØÖ•.~* šTŒ!•-×áºTâ®ä#õü'´ eýlYÅÓeÕKÂrT"CÚ@u!Óxƒ{š3€}1¿(r}%«nËamjÑ%ÑNEò v ˜à  σöK³,*º.àzù¨™Ó ÚçâU¦*¿ 9{%Ö¹ njûdaXöb) kÛƱûÓ\°M7ˆÂ=û›ç¿Ã‚­V»Cg–8ÙêE- j)k$º`Ã-ùEýeBÆÇ]c¡°ñty&Òd0nõ'¡W+ƒ*|–øµFa\GQªEAÔp5\Ǽ·¼Ç8·õ -â§Ú[ ‡ uZeÖ 3}×d'+¹:ð+K†Û®s!Ï$úe€<Û”x)1»a­¡LC]¸µík…ÚàA»AYº{†ªS[¦5HÒ7ù --,ísòDØ€èk ÞÀîÜ ò@â( ËNˆë›4ô½•/¦o‡€Û7 ê•ÆêòðÜy'Án½µ á˜ݦ ndeo…[ì¶Ê,¥R³Ä=À±—–ß;£™´ñSâ*g§”ïaið‘Jå~™ÓÞ ß³Õ¢»8x埒²52>AÊb&-÷\7´éÄù€T˜,w;3{ï˜k…à¹ÄqÀ«œ{€\ ˆ¾[´¨јr &Úé„Ívˆ±8†¿]|¬ņ4I×pÞS1ÈÖz‰#Ìv‡G!YNògñ:màTz¢Ý1ô©^O=~ë|5Bã™ç•¼µõ•bÆ@úÕS¬ÈŒ#¬zünrŸ û” Z²•ï›èðV"ÁHÚý©wÝ €7¼Ìu1hÑa3Éä û f$o¿É ™Ú›ÝçnpÒ3äÌ3†Í§,Äï]$‰/pê †«À¼¸e9­Æê_C]žƒ·ý·frÁN«, E=›Çq -‰öŒ:aÏ¿±í&£Í:-} 84‘ÿ eƒQÑeëSsuiA ³g㟥ú£?ÿ ʼn*”“÷aühe:ÊWa@ÒÞk±eØ] F Ô—r.åä˜ @ö¥ªZoÐýYL·¥S²G/‡ñ <~*ZÆ´è>JlòàÛƽÿ 窘ìGN¢:I®KšJp/`íIÁÀõ#Ä-€ö­šµŒoF4|ÆQØÆ@Ì|£Ô…¢À{9˜è½Üó›€ôYÒÎYsið;ís¤€à²ˆ‚4qÉVŒI$ ‰"° æµ8cXGjœˏ¡Aâý•ËÜ¢ûï e·çLx']á"oÅÎê3¯Ç—¹”ó0nå‚âg{Œñ> S´˜îè°g238‚ãköÝfÚd´6Ò€;ò÷±¢™¼›º ¢Æ'¥Ðx'e¬ç ]bÈÆV¢ó‹kýBO ðÊâ$Ÿ!×T 3Mýמ žìٍàÌü‘8÷€àæØ8æ©6‰©L´«…oãpð„~Çk‰!ñ;‹”ÛžÍ àž±z Ÿôû øŸÝužÏ;ÿ #|u6™Þ¬ÚˆÐõA4¶â|ôl|Ê2ŽÇ¤ÝÅÇY.<#Aí.k§hóF‚”Y; M½Ö4hŸ4&›­¿tès´%FìL¥£Ãk‰ÇT¤haÁ¤ÚxfÉ`ÑìË›>i 3t‚:,–+^÷´–{Û–Nxi"x‘Ûg î¨>¥Õ܁ùZH,2Û“:8xÊ¢Çí9.É-Ìâã-=çjwµS˜dütžçwýGòú®®ûº_ˆýx$–¡ãøO EÚÛÏ÷R„×w+3£Á£öUMyR²¹âŒ°š›¸Ñãò9§Ó_Dl+Ùßc›úšGÅÌc†Ž!Ko=¶.‘Îÿ c²(2®V mª.ÿ ¹B›¹å ù„öŸSV>™ü¯$y:G¢Z×àøúdî¹û­·ýÇ´:•c LÍõi_‹ö+ÎæGÊè>OŠ•äž´§Þ{X}¨1ÚTc›»Qþ•êô°t¿OP?eæ~É{5]•ÙR£r5†nZ\ã@ &îJõ ¾àC°þV>fé¥/ü5ñÊIº_é5 ;e­h<@ Ä&æÃëE%;X,ÒãÆÞ`Oò¦kŸm#˜!ÀyÄ¢| óLšò¥Ä` ¶R=|ÈCâh5ò3DˆïF†ðÒ#ÅìÛœ?¸yhBãœí ZxßÎÄhºRK„`Þödvײ™ÀÈÑÒgŒuY w³%†ƒÓzõ ÖÏp‚dH®¦A´ù§»ÓÇMæ~)ˆð‡û:ù&Ä •vGD´À n ݇¼Ö8Fö óáà£~Ë¥x`oK|Ä?fxiØü%pìR>éò+Û±éÎ>núlFŤ'tq8LZÏvÃ?„¡ß±È⽆¯³íü@x|PöUäèØã¡ð‚ŒAìÏ"vÍwóŸÍ{ ý0.z È•Ö{,N¡£¡ŸKÕÙž>Ýœþ ÍÀ°<×EA!Å‚D™IúOÍ¡>ôG}Â` ÍßkÜL™Ž Þð™ {IøF²¹òQ3&!ÃÂÞz.d&Ï-sH¸,Ôõ˜ŽP€ 77ˆÝ¼ÊëÜw =cÕ Ú,ØÐ5ÎYÐ)ì´öœgŒ[¤ßv㙑8心>h]§µháYš£²ºÑ.{Ï7Sð•?´~×SÃKýJÛ˜ ™Íäiúu<µX¶1õ^kâçIÑ£sZ4h>j*ÔšD:4­¿_ ÷¸ Õxæÿ ¸?Mù _•­ÊÐ ä ÷ý ÑwL œ­ïnTkÛUÍN©ë:¦fV ¶ÜÔÜMªÅâA½–¿R×TXš-%iTÊT•‡Ù‚JôϐZxWÑè‰f‰òG º ×Õû2aZ7OU3[“×AT–ÞŒ…-‘¤”Ì ì&(ˆ¿­•ƒkï’:ðY¦W‘ Å)“†‘˜³Åtcø˜ñTÂwÚÇ4|üLÇªí–v- qˆèU qPE.†â‘˜µ Æ,ÐÅs]8¾„oúÑ i>ÜxxÈó)ƒ ´æÁâØ$À‰vžŸf$Ž |ãw;ÀÁIJ»b` {¦Ó¤Ú$©YÀ‘n@Óïž«9J¼êG m¤ ܯ¹ÌW4€ÐÒÅÛ‡#褕Ÿn-?í|с¥÷Ú¹¬'´ÞÜ9ÓK `hê£SÄSà?7—Wí_´…óB›»:=Ãïq`<8ñÓŒÑlú2d¬ê³£hÖ[l|$vÝro~'R®‰§°ñmY ͧäP |PUª¹·:3Œ[Û{Xÿ ºâ@‚W–Äé u‚ ¯´*=íή.pûÒdt @G‰¬ s¸ ëÉücr ÞæѨÊ@>¤¢Ö±. Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ# Test properties of bool promised by PEP 285 import unittest from test import support import os class BoolTest(unittest.TestCase): def test_subclass(self): try: class C(bool): pass except TypeError: pass else: self.fail("bool should not be subclassable") self.assertRaises(TypeError, int.__new__, bool, 0) def test_print(self): try: with open(support.TESTFN, "w") as fo: print(False, True, file=fo) with open(support.TESTFN, "r") as fi: self.assertEqual(fi.read(), 'False True\n') finally: os.remove(support.TESTFN) def test_repr(self): self.assertEqual(repr(False), 'False') self.assertEqual(repr(True), 'True') self.assertEqual(eval(repr(False)), False) self.assertEqual(eval(repr(True)), True) def test_str(self): self.assertEqual(str(False), 'False') self.assertEqual(str(True), 'True') def test_int(self): self.assertEqual(int(False), 0) self.assertIsNot(int(False), False) self.assertEqual(int(True), 1) self.assertIsNot(int(True), True) def test_float(self): self.assertEqual(float(False), 0.0) self.assertIsNot(float(False), False) self.assertEqual(float(True), 1.0) self.assertIsNot(float(True), True) def test_math(self): self.assertEqual(+False, 0) self.assertIsNot(+False, False) self.assertEqual(-False, 0) self.assertIsNot(-False, False) self.assertEqual(abs(False), 0) self.assertIsNot(abs(False), False) self.assertEqual(+True, 1) self.assertIsNot(+True, True) self.assertEqual(-True, -1) self.assertEqual(abs(True), 1) self.assertIsNot(abs(True), True) self.assertEqual(~False, -1) self.assertEqual(~True, -2) self.assertEqual(False+2, 2) self.assertEqual(True+2, 3) self.assertEqual(2+False, 2) self.assertEqual(2+True, 3) self.assertEqual(False+False, 0) self.assertIsNot(False+False, False) self.assertEqual(False+True, 1) self.assertIsNot(False+True, True) self.assertEqual(True+False, 1) self.assertIsNot(True+False, True) self.assertEqual(True+True, 2) self.assertEqual(True-True, 0) self.assertIsNot(True-True, False) self.assertEqual(False-False, 0) self.assertIsNot(False-False, False) self.assertEqual(True-False, 1) self.assertIsNot(True-False, True) self.assertEqual(False-True, -1) self.assertEqual(True*1, 1) self.assertEqual(False*1, 0) self.assertIsNot(False*1, False) self.assertEqual(True/1, 1) self.assertIsNot(True/1, True) self.assertEqual(False/1, 0) self.assertIsNot(False/1, False) self.assertEqual(True%1, 0) self.assertIsNot(True%1, False) self.assertEqual(True%2, 1) self.assertIsNot(True%2, True) self.assertEqual(False%1, 0) self.assertIsNot(False%1, False) for b in False, True: for i in 0, 1, 2: self.assertEqual(b**i, int(b)**i) self.assertIsNot(b**i, bool(int(b)**i)) for a in False, True: for b in False, True: self.assertIs(a&b, bool(int(a)&int(b))) self.assertIs(a|b, bool(int(a)|int(b))) self.assertIs(a^b, bool(int(a)^int(b))) self.assertEqual(a&int(b), int(a)&int(b)) self.assertIsNot(a&int(b), bool(int(a)&int(b))) self.assertEqual(a|int(b), int(a)|int(b)) self.assertIsNot(a|int(b), bool(int(a)|int(b))) self.assertEqual(a^int(b), int(a)^int(b)) self.assertIsNot(a^int(b), bool(int(a)^int(b))) self.assertEqual(int(a)&b, int(a)&int(b)) self.assertIsNot(int(a)&b, bool(int(a)&int(b))) self.assertEqual(int(a)|b, int(a)|int(b)) self.assertIsNot(int(a)|b, bool(int(a)|int(b))) self.assertEqual(int(a)^b, int(a)^int(b)) self.assertIsNot(int(a)^b, bool(int(a)^int(b))) self.assertIs(1==1, True) self.assertIs(1==0, False) self.assertIs(0<1, True) self.assertIs(1<0, False) self.assertIs(0<=0, True) self.assertIs(1<=0, False) self.assertIs(1>0, True) self.assertIs(1>1, False) self.assertIs(1>=1, True) self.assertIs(0>=1, False) self.assertIs(0!=1, True) self.assertIs(0!=0, False) x = [1] self.assertIs(x is x, True) self.assertIs(x is not x, False) self.assertIs(1 in x, True) self.assertIs(0 in x, False) self.assertIs(1 not in x, False) self.assertIs(0 not in x, True) x = {1: 2} self.assertIs(x is x, True) self.assertIs(x is not x, False) self.assertIs(1 in x, True) self.assertIs(0 in x, False) self.assertIs(1 not in x, False) self.assertIs(0 not in x, True) self.assertIs(not True, False) self.assertIs(not False, True) def test_convert(self): self.assertRaises(TypeError, bool, 42, 42) self.assertIs(bool(10), True) self.assertIs(bool(1), True) self.assertIs(bool(-1), True) self.assertIs(bool(0), False) self.assertIs(bool("hello"), True) self.assertIs(bool(""), False) self.assertIs(bool(), False) def test_keyword_args(self): with self.assertRaisesRegex(TypeError, 'keyword argument'): bool(x=10) def test_format(self): self.assertEqual("%d" % False, "0") self.assertEqual("%d" % True, "1") self.assertEqual("%x" % False, "0") self.assertEqual("%x" % True, "1") def test_hasattr(self): self.assertIs(hasattr([], "append"), True) self.assertIs(hasattr([], "wobble"), False) def test_callable(self): self.assertIs(callable(len), True) self.assertIs(callable(1), False) def test_isinstance(self): self.assertIs(isinstance(True, bool), True) self.assertIs(isinstance(False, bool), True) self.assertIs(isinstance(True, int), True) self.assertIs(isinstance(False, int), True) self.assertIs(isinstance(1, bool), False) self.assertIs(isinstance(0, bool), False) def test_issubclass(self): self.assertIs(issubclass(bool, int), True) self.assertIs(issubclass(int, bool), False) def test_contains(self): self.assertIs(1 in {}, False) self.assertIs(1 in {1:1}, True) def test_string(self): self.assertIs("xyz".endswith("z"), True) self.assertIs("xyz".endswith("x"), False) self.assertIs("xyz0123".isalnum(), True) self.assertIs("@#$%".isalnum(), False) self.assertIs("xyz".isalpha(), True) self.assertIs("@#$%".isalpha(), False) self.assertIs("0123".isdigit(), True) self.assertIs("xyz".isdigit(), False) self.assertIs("xyz".islower(), True) self.assertIs("XYZ".islower(), False) self.assertIs("0123".isdecimal(), True) self.assertIs("xyz".isdecimal(), False) self.assertIs("0123".isnumeric(), True) self.assertIs("xyz".isnumeric(), False) self.assertIs(" ".isspace(), True) self.assertIs("\xa0".isspace(), True) self.assertIs("\u3000".isspace(), True) self.assertIs("XYZ".isspace(), False) self.assertIs("X".istitle(), True) self.assertIs("x".istitle(), False) self.assertIs("XYZ".isupper(), True) self.assertIs("xyz".isupper(), False) self.assertIs("xyz".startswith("x"), True) self.assertIs("xyz".startswith("z"), False) def test_boolean(self): self.assertEqual(True & 1, 1) self.assertNotIsInstance(True & 1, bool) self.assertIs(True & True, True) self.assertEqual(True | 1, 1) self.assertNotIsInstance(True | 1, bool) self.assertIs(True | True, True) self.assertEqual(True ^ 1, 0) self.assertNotIsInstance(True ^ 1, bool) self.assertIs(True ^ True, False) def test_fileclosed(self): try: with open(support.TESTFN, "w") as f: self.assertIs(f.closed, False) self.assertIs(f.closed, True) finally: os.remove(support.TESTFN) def test_types(self): # types are always true. for t in [bool, complex, dict, float, int, list, object, set, str, tuple, type]: self.assertIs(bool(t), True) def test_operator(self): import operator self.assertIs(operator.truth(0), False) self.assertIs(operator.truth(1), True) self.assertIs(operator.not_(1), False) self.assertIs(operator.not_(0), True) self.assertIs(operator.contains([], 1), False) self.assertIs(operator.contains([1], 1), True) self.assertIs(operator.lt(0, 0), False) self.assertIs(operator.lt(0, 1), True) self.assertIs(operator.is_(True, True), True) self.assertIs(operator.is_(True, False), False) self.assertIs(operator.is_not(True, True), False) self.assertIs(operator.is_not(True, False), True) def test_marshal(self): import marshal self.assertIs(marshal.loads(marshal.dumps(True)), True) self.assertIs(marshal.loads(marshal.dumps(False)), False) def test_pickle(self): import pickle for proto in range(pickle.HIGHEST_PROTOCOL + 1): self.assertIs(pickle.loads(pickle.dumps(True, proto)), True) self.assertIs(pickle.loads(pickle.dumps(False, proto)), False) def test_picklevalues(self): # Test for specific backwards-compatible pickle values import pickle self.assertEqual(pickle.dumps(True, protocol=0), b"I01\n.") self.assertEqual(pickle.dumps(False, protocol=0), b"I00\n.") self.assertEqual(pickle.dumps(True, protocol=1), b"I01\n.") self.assertEqual(pickle.dumps(False, protocol=1), b"I00\n.") self.assertEqual(pickle.dumps(True, protocol=2), b'\x80\x02\x88.') self.assertEqual(pickle.dumps(False, protocol=2), b'\x80\x02\x89.') def test_convert_to_bool(self): # Verify that TypeError occurs when bad things are returned # from __bool__(). This isn't really a bool test, but # it's related. check = lambda o: self.assertRaises(TypeError, bool, o) class Foo(object): def __bool__(self): return self check(Foo()) class Bar(object): def __bool__(self): return "Yes" check(Bar()) class Baz(int): def __bool__(self): return self check(Baz()) # __bool__() must return a bool not an int class Spam(int): def __bool__(self): return 1 check(Spam()) class Eggs: def __len__(self): return -1 self.assertRaises(ValueError, bool, Eggs()) def test_from_bytes(self): self.assertIs(bool.from_bytes(b'\x00'*8, 'big'), False) self.assertIs(bool.from_bytes(b'abcd', 'little'), True) def test_sane_len(self): # this test just tests our assumptions about __len__ # this will start failing if __len__ changes assertions for badval in ['illegal', -1, 1 << 32]: class A: def __len__(self): return badval try: bool(A()) except (Exception) as e_bool: try: len(A()) except (Exception) as e_len: self.assertEqual(str(e_bool), str(e_len)) def test_blocked(self): class A: __bool__ = None self.assertRaises(TypeError, bool, A()) class B: def __len__(self): return 10 __bool__ = None self.assertRaises(TypeError, bool, B()) def test_real_and_imag(self): self.assertEqual(True.real, 1) self.assertEqual(True.imag, 0) self.assertIs(type(True.real), int) self.assertIs(type(True.imag), int) self.assertEqual(False.real, 0) self.assertEqual(False.imag, 0) self.assertIs(type(False.real), int) self.assertIs(type(False.imag), int) if __name__ == "__main__": unittest.main()