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’IIGÿÙimport copy import warnings with warnings.catch_warnings(): warnings.filterwarnings('ignore', 'The parser module is deprecated', DeprecationWarning) import parser import pickle import unittest import operator import struct from test import support from test.support.script_helper import assert_python_failure from test.support.script_helper import assert_python_ok # # First, we test that we can generate trees from valid source fragments, # and that these valid trees are indeed allowed by the tree-loading side # of the parser module. # class RoundtripLegalSyntaxTestCase(unittest.TestCase): def roundtrip(self, f, s): st1 = f(s) t = st1.totuple() try: st2 = parser.sequence2st(t) except parser.ParserError as why: self.fail("could not roundtrip %r: %s" % (s, why)) self.assertEqual(t, st2.totuple(), "could not re-generate syntax tree") def check_expr(self, s): self.roundtrip(parser.expr, s) def test_flags_passed(self): # The unicode literals flags has to be passed from the parser to AST # generation. suite = parser.suite("from __future__ import unicode_literals; x = ''") code = suite.compile() scope = {} exec(code, {}, scope) self.assertIsInstance(scope["x"], str) def check_suite(self, s): self.roundtrip(parser.suite, s) def test_yield_statement(self): self.check_suite("def f(): yield 1") self.check_suite("def f(): yield") self.check_suite("def f(): x += yield") self.check_suite("def f(): x = yield 1") self.check_suite("def f(): x = y = yield 1") self.check_suite("def f(): x = yield") self.check_suite("def f(): x = y = yield") self.check_suite("def f(): 1 + (yield)*2") self.check_suite("def f(): (yield 1)*2") self.check_suite("def f(): return; yield 1") self.check_suite("def f(): yield 1; return") self.check_suite("def f(): yield from 1") self.check_suite("def f(): x = yield from 1") self.check_suite("def f(): f((yield from 1))") self.check_suite("def f(): yield 1; return 1") self.check_suite("def f():\n" " for x in range(30):\n" " yield x\n") self.check_suite("def f():\n" " if (yield):\n" " yield x\n") def test_await_statement(self): self.check_suite("async def f():\n await smth()") self.check_suite("async def f():\n foo = await smth()") self.check_suite("async def f():\n foo, bar = await smth()") self.check_suite("async def f():\n (await smth())") self.check_suite("async def f():\n foo((await smth()))") self.check_suite("async def f():\n await foo(); return 42") def test_async_with_statement(self): self.check_suite("async def f():\n async with 1: pass") self.check_suite("async def f():\n async with a as b, c as d: pass") def test_async_for_statement(self): self.check_suite("async def f():\n async for i in (): pass") self.check_suite("async def f():\n async for i, b in (): pass") def test_nonlocal_statement(self): self.check_suite("def f():\n" " x = 0\n" " def g():\n" " nonlocal x\n") self.check_suite("def f():\n" " x = y = 0\n" " def g():\n" " nonlocal x, y\n") def test_expressions(self): self.check_expr("foo(1)") self.check_expr("[1, 2, 3]") self.check_expr("[x**3 for x in range(20)]") self.check_expr("[x**3 for x in range(20) if x % 3]") self.check_expr("[x**3 for x in range(20) if x % 2 if x % 3]") self.check_expr("list(x**3 for x in range(20))") self.check_expr("list(x**3 for x in range(20) if x % 3)") self.check_expr("list(x**3 for x in range(20) if x % 2 if x % 3)") self.check_expr("foo(*args)") self.check_expr("foo(*args, **kw)") self.check_expr("foo(**kw)") self.check_expr("foo(key=value)") self.check_expr("foo(key=value, *args)") self.check_expr("foo(key=value, *args, **kw)") self.check_expr("foo(key=value, **kw)") self.check_expr("foo(a, b, c, *args)") self.check_expr("foo(a, b, c, *args, **kw)") self.check_expr("foo(a, b, c, **kw)") self.check_expr("foo(a, *args, keyword=23)") self.check_expr("foo + bar") self.check_expr("foo - bar") self.check_expr("foo * bar") self.check_expr("foo / bar") self.check_expr("foo // bar") self.check_expr("(foo := 1)") self.check_expr("lambda: 0") self.check_expr("lambda x: 0") self.check_expr("lambda *y: 0") self.check_expr("lambda *y, **z: 0") self.check_expr("lambda **z: 0") self.check_expr("lambda x, y: 0") self.check_expr("lambda foo=bar: 0") self.check_expr("lambda foo=bar, spaz=nifty+spit: 0") self.check_expr("lambda foo=bar, **z: 0") self.check_expr("lambda foo=bar, blaz=blat+2, **z: 0") self.check_expr("lambda foo=bar, blaz=blat+2, *y, **z: 0") self.check_expr("lambda x, *y, **z: 0") self.check_expr("(x for x in range(10))") self.check_expr("foo(x for x in range(10))") self.check_expr("...") self.check_expr("a[...]") def test_simple_expression(self): # expr_stmt self.check_suite("a") def test_simple_assignments(self): self.check_suite("a = b") self.check_suite("a = b = c = d = e") def test_var_annot(self): self.check_suite("x: int = 5") self.check_suite("y: List[T] = []; z: [list] = fun()") self.check_suite("x: tuple = (1, 2)") self.check_suite("d[f()]: int = 42") self.check_suite("f(d[x]): str = 'abc'") self.check_suite("x.y.z.w: complex = 42j") self.check_suite("x: int") self.check_suite("def f():\n" " x: str\n" " y: int = 5\n") self.check_suite("class C:\n" " x: str\n" " y: int = 5\n") self.check_suite("class C:\n" " def __init__(self, x: int) -> None:\n" " self.x: int = x\n") # double check for nonsense with self.assertRaises(SyntaxError): exec("2+2: int", {}, {}) with self.assertRaises(SyntaxError): exec("[]: int = 5", {}, {}) with self.assertRaises(SyntaxError): exec("x, *y, z: int = range(5)", {}, {}) with self.assertRaises(SyntaxError): exec("x: int = 1, y = 2", {}, {}) with self.assertRaises(SyntaxError): exec("u = v: int", {}, {}) with self.assertRaises(SyntaxError): exec("False: int", {}, {}) with self.assertRaises(SyntaxError): exec("x.False: int", {}, {}) with self.assertRaises(SyntaxError): exec("x.y,: int", {}, {}) with self.assertRaises(SyntaxError): exec("[0]: int", {}, {}) with self.assertRaises(SyntaxError): exec("f(): int", {}, {}) def test_simple_augmented_assignments(self): self.check_suite("a += b") self.check_suite("a -= b") self.check_suite("a *= b") self.check_suite("a /= b") self.check_suite("a //= b") self.check_suite("a %= b") self.check_suite("a &= b") self.check_suite("a |= b") self.check_suite("a ^= b") self.check_suite("a <<= b") self.check_suite("a >>= b") self.check_suite("a **= b") def test_function_defs(self): self.check_suite("def f(): pass") self.check_suite("def f(*args): pass") self.check_suite("def f(*args, **kw): pass") self.check_suite("def f(**kw): pass") self.check_suite("def f(foo=bar): pass") self.check_suite("def f(foo=bar, *args): pass") self.check_suite("def f(foo=bar, *args, **kw): pass") self.check_suite("def f(foo=bar, **kw): pass") self.check_suite("def f(a, b): pass") self.check_suite("def f(a, b, *args): pass") self.check_suite("def f(a, b, *args, **kw): pass") self.check_suite("def f(a, b, **kw): pass") self.check_suite("def f(a, b, foo=bar): pass") self.check_suite("def f(a, b, foo=bar, *args): pass") self.check_suite("def f(a, b, foo=bar, *args, **kw): pass") self.check_suite("def f(a, b, foo=bar, **kw): pass") self.check_suite("@staticmethod\n" "def f(): pass") self.check_suite("@staticmethod\n" "@funcattrs(x, y)\n" "def f(): pass") self.check_suite("@funcattrs()\n" "def f(): pass") self.check_suite("@False or x\n" "def f(): pass") self.check_suite("@d := x\n" "def f(): pass") self.check_suite("@lambda f: x(f)\n" "def f(): pass") self.check_suite("@[..., x, ...][1]\n" "def f(): pass") self.check_suite("@x(x)(x)\n" "def f(): pass") self.check_suite("@(x, x)\n" "def f(): pass") self.check_suite("@...\n" "def f(): pass") self.check_suite("@None\n" "def f(): pass") self.check_suite("@w @(x @y) @(z)\n" "def f(): pass") self.check_suite("@w[x].y.z\n" "def f(): pass") # keyword-only arguments self.check_suite("def f(*, a): pass") self.check_suite("def f(*, a = 5): pass") self.check_suite("def f(*, a = 5, b): pass") self.check_suite("def f(*, a, b = 5): pass") self.check_suite("def f(*, a, b = 5, **kwds): pass") self.check_suite("def f(*args, a): pass") self.check_suite("def f(*args, a = 5): pass") self.check_suite("def f(*args, a = 5, b): pass") self.check_suite("def f(*args, a, b = 5): pass") self.check_suite("def f(*args, a, b = 5, **kwds): pass") # positional-only arguments self.check_suite("def f(a, /): pass") self.check_suite("def f(a, /,): pass") self.check_suite("def f(a, b, /): pass") self.check_suite("def f(a, b, /, c): pass") self.check_suite("def f(a, b, /, c = 6): pass") self.check_suite("def f(a, b, /, c, *, d): pass") self.check_suite("def f(a, b, /, c = 1, *, d): pass") self.check_suite("def f(a, b, /, c, *, d = 1): pass") self.check_suite("def f(a, b=1, /, c=2, *, d = 3): pass") self.check_suite("def f(a=0, b=1, /, c=2, *, d = 3): pass") # function annotations self.check_suite("def f(a: int): pass") self.check_suite("def f(a: int = 5): pass") self.check_suite("def f(*args: list): pass") self.check_suite("def f(**kwds: dict): pass") self.check_suite("def f(*, a: int): pass") self.check_suite("def f(*, a: int = 5): pass") self.check_suite("def f() -> int: pass") def test_class_defs(self): self.check_suite("class foo():pass") self.check_suite("class foo(object):pass") self.check_suite("@class_decorator\n" "class foo():pass") self.check_suite("@class_decorator(arg)\n" "class foo():pass") self.check_suite("@decorator1\n" "@decorator2\n" "class foo():pass") self.check_suite("@False or x\n" "class C: pass") self.check_suite("@d := x\n" "class C: pass") self.check_suite("@lambda f: x(f)\n" "class C: pass") self.check_suite("@[..., x, ...][1]\n" "class C: pass") self.check_suite("@x(x)(x)\n" "class C: pass") self.check_suite("@(x, x)\n" "class C: pass") self.check_suite("@...\n" "class C: pass") self.check_suite("@None\n" "class C: pass") self.check_suite("@w @(x @y) @(z)\n" "class C: pass") self.check_suite("@w[x].y.z\n" "class C: pass") def test_import_from_statement(self): self.check_suite("from sys.path import *") self.check_suite("from sys.path import dirname") self.check_suite("from sys.path import (dirname)") self.check_suite("from sys.path import (dirname,)") self.check_suite("from sys.path import dirname as my_dirname") self.check_suite("from sys.path import (dirname as my_dirname)") self.check_suite("from sys.path import (dirname as my_dirname,)") self.check_suite("from sys.path import dirname, basename") self.check_suite("from sys.path import (dirname, basename)") self.check_suite("from sys.path import (dirname, basename,)") self.check_suite( "from sys.path import dirname as my_dirname, basename") self.check_suite( "from sys.path import (dirname as my_dirname, basename)") self.check_suite( "from sys.path import (dirname as my_dirname, basename,)") self.check_suite( "from sys.path import dirname, basename as my_basename") self.check_suite( "from sys.path import (dirname, basename as my_basename)") self.check_suite( "from sys.path import (dirname, basename as my_basename,)") self.check_suite("from .bogus import x") def test_basic_import_statement(self): self.check_suite("import sys") self.check_suite("import sys as system") self.check_suite("import sys, math") self.check_suite("import sys as system, math") self.check_suite("import sys, math as my_math") def test_relative_imports(self): self.check_suite("from . import name") self.check_suite("from .. import name") # check all the way up to '....', since '...' is tokenized # differently from '.' (it's an ellipsis token). self.check_suite("from ... import name") self.check_suite("from .... import name") self.check_suite("from .pkg import name") self.check_suite("from ..pkg import name") self.check_suite("from ...pkg import name") self.check_suite("from ....pkg import name") def test_pep263(self): self.check_suite("# -*- coding: iso-8859-1 -*-\n" "pass\n") def test_assert(self): self.check_suite("assert alo < ahi and blo < bhi\n") def test_with(self): self.check_suite("with open('x'): pass\n") self.check_suite("with open('x') as f: pass\n") self.check_suite("with open('x') as f, open('y') as g: pass\n") def test_try_stmt(self): self.check_suite("try: pass\nexcept: pass\n") self.check_suite("try: pass\nfinally: pass\n") self.check_suite("try: pass\nexcept A: pass\nfinally: pass\n") self.check_suite("try: pass\nexcept A: pass\nexcept: pass\n" "finally: pass\n") self.check_suite("try: pass\nexcept: pass\nelse: pass\n") self.check_suite("try: pass\nexcept: pass\nelse: pass\n" "finally: pass\n") def test_if_stmt(self): self.check_suite("if True:\n pass\nelse:\n pass\n") self.check_suite("if True:\n pass\nelif True:\n pass\nelse:\n pass\n") def test_position(self): # An absolutely minimal test of position information. Better # tests would be a big project. code = "def f(x):\n return x + 1" st = parser.suite(code) def walk(tree): node_type = tree[0] next = tree[1] if isinstance(next, (tuple, list)): for elt in tree[1:]: for x in walk(elt): yield x else: yield tree expected = [ (1, 'def', 1, 0), (1, 'f', 1, 4), (7, '(', 1, 5), (1, 'x', 1, 6), (8, ')', 1, 7), (11, ':', 1, 8), (4, '', 1, 9), (5, '', 2, -1), (1, 'return', 2, 4), (1, 'x', 2, 11), (14, '+', 2, 13), (2, '1', 2, 15), (4, '', 2, 16), (6, '', 2, -1), (4, '', 2, -1), (0, '', 2, -1), ] self.assertEqual(list(walk(st.totuple(line_info=True, col_info=True))), expected) self.assertEqual(list(walk(st.totuple())), [(t, n) for t, n, l, c in expected]) self.assertEqual(list(walk(st.totuple(line_info=True))), [(t, n, l) for t, n, l, c in expected]) self.assertEqual(list(walk(st.totuple(col_info=True))), [(t, n, c) for t, n, l, c in expected]) self.assertEqual(list(walk(st.tolist(line_info=True, col_info=True))), [list(x) for x in expected]) self.assertEqual(list(walk(parser.st2tuple(st, line_info=True, col_info=True))), expected) self.assertEqual(list(walk(parser.st2list(st, line_info=True, col_info=True))), [list(x) for x in expected]) def test_extended_unpacking(self): self.check_suite("*a = y") self.check_suite("x, *b, = m") self.check_suite("[*a, *b] = y") self.check_suite("for [*x, b] in x: pass") def test_raise_statement(self): self.check_suite("raise\n") self.check_suite("raise e\n") self.check_suite("try:\n" " suite\n" "except Exception as e:\n" " raise ValueError from e\n") def test_list_displays(self): self.check_expr('[]') self.check_expr('[*{2}, 3, *[4]]') def test_set_displays(self): self.check_expr('{*{2}, 3, *[4]}') self.check_expr('{2}') self.check_expr('{2,}') self.check_expr('{2, 3}') self.check_expr('{2, 3,}') def test_dict_displays(self): self.check_expr('{}') self.check_expr('{a:b}') self.check_expr('{a:b,}') self.check_expr('{a:b, c:d}') self.check_expr('{a:b, c:d,}') self.check_expr('{**{}}') self.check_expr('{**{}, 3:4, **{5:6, 7:8}}') def test_argument_unpacking(self): self.check_expr("f(*a, **b)") self.check_expr('f(a, *b, *c, *d)') self.check_expr('f(**a, **b)') self.check_expr('f(2, *a, *b, **b, **c, **d)') self.check_expr("f(*b, *() or () and (), **{} and {}, **() or {})") def test_set_comprehensions(self): self.check_expr('{x for x in seq}') self.check_expr('{f(x) for x in seq}') self.check_expr('{f(x) for x in seq if condition(x)}') def test_dict_comprehensions(self): self.check_expr('{x:x for x in seq}') self.check_expr('{x**2:x[3] for x in seq if condition(x)}') self.check_expr('{x:x for x in seq1 for y in seq2 if condition(x, y)}') def test_named_expressions(self): self.check_suite("(a := 1)") self.check_suite("(a := a)") self.check_suite("if (match := pattern.search(data)) is None: pass") self.check_suite("while match := pattern.search(f.read()): pass") self.check_suite("[y := f(x), y**2, y**3]") self.check_suite("filtered_data = [y for x in data if (y := f(x)) is None]") self.check_suite("(y := f(x))") self.check_suite("y0 = (y1 := f(x))") self.check_suite("foo(x=(y := f(x)))") self.check_suite("def foo(answer=(p := 42)): pass") self.check_suite("def foo(answer: (p := 42) = 5): pass") self.check_suite("lambda: (x := 1)") self.check_suite("(x := lambda: 1)") self.check_suite("(x := lambda: (y := 1))") # not in PEP self.check_suite("lambda line: (m := re.match(pattern, line)) and m.group(1)") self.check_suite("x = (y := 0)") self.check_suite("(z:=(y:=(x:=0)))") self.check_suite("(info := (name, phone, *rest))") self.check_suite("(x:=1,2)") self.check_suite("(total := total + tax)") self.check_suite("len(lines := f.readlines())") self.check_suite("foo(x := 3, cat='vector')") self.check_suite("foo(cat=(category := 'vector'))") self.check_suite("if any(len(longline := l) >= 100 for l in lines): print(longline)") self.check_suite( "if env_base := os.environ.get('PYTHONUSERBASE', None): return env_base" ) self.check_suite( "if self._is_special and (ans := self._check_nans(context=context)): return ans" ) self.check_suite("foo(b := 2, a=1)") self.check_suite("foo(b := 2, a=1)") self.check_suite("foo((b := 2), a=1)") self.check_suite("foo(c=(b := 2), a=1)") self.check_suite("{(x := C(i)).q: x for i in y}") # # Second, we take *invalid* trees and make sure we get ParserError # rejections for them. # class IllegalSyntaxTestCase(unittest.TestCase): def check_bad_tree(self, tree, label): try: parser.sequence2st(tree) except parser.ParserError: pass else: self.fail("did not detect invalid tree for %r" % label) def test_junk(self): # not even remotely valid: self.check_bad_tree((1, 2, 3), "") def test_illegal_terminal(self): tree = \ (257, (269, (270, (271, (277, (1,))), (4, ''))), (4, ''), (0, '')) self.check_bad_tree(tree, "too small items in terminal node") tree = \ (257, (269, (270, (271, (277, (1, b'pass'))), (4, ''))), (4, ''), (0, '')) self.check_bad_tree(tree, "non-string second item in terminal node") tree = \ (257, (269, (270, (271, (277, (1, 'pass', '0', 0))), (4, ''))), (4, ''), (0, '')) self.check_bad_tree(tree, "non-integer third item in terminal node") tree = \ (257, (269, (270, (271, (277, (1, 'pass', 0, 0))), (4, ''))), (4, ''), (0, '')) self.check_bad_tree(tree, "too many items in terminal node") def test_illegal_yield_1(self): # Illegal yield statement: def f(): return 1; yield 1 tree = \ (257, (264, (285, (259, (1, 'def'), (1, 'f'), (260, (7, '('), (8, ')')), (11, ':'), (291, (4, ''), (5, ''), (264, (265, (266, (272, (275, (1, 'return'), (313, (292, (293, (294, (295, (297, (298, (299, (300, (301, (302, (303, (304, (305, (2, '1')))))))))))))))))), (264, (265, (266, (272, (276, (1, 'yield'), (313, (292, (293, (294, (295, (297, (298, (299, (300, (301, (302, (303, (304, (305, (2, '1')))))))))))))))))), (4, ''))), (6, ''))))), (4, ''), (0, '')))) self.check_bad_tree(tree, "def f():\n return 1\n yield 1") def test_illegal_yield_2(self): # Illegal return in generator: def f(): return 1; yield 1 tree = \ (257, (264, (265, (266, (278, (1, 'from'), (281, (1, '__future__')), (1, 'import'), (279, (1, 'generators')))), (4, ''))), (264, (285, (259, (1, 'def'), (1, 'f'), (260, (7, '('), (8, ')')), (11, ':'), (291, (4, ''), (5, ''), (264, (265, (266, (272, (275, (1, 'return'), (313, (292, (293, (294, (295, (297, (298, (299, (300, (301, (302, (303, (304, (305, (2, '1')))))))))))))))))), (264, (265, (266, (272, (276, (1, 'yield'), (313, (292, (293, (294, (295, (297, (298, (299, (300, (301, (302, (303, (304, (305, (2, '1')))))))))))))))))), (4, ''))), (6, ''))))), (4, ''), (0, '')))) self.check_bad_tree(tree, "def f():\n return 1\n yield 1") def test_a_comma_comma_c(self): # Illegal input: a,,c tree = \ (258, (311, (290, (291, (292, (293, (295, (296, (297, (298, (299, (300, (301, (302, (303, (1, 'a')))))))))))))), (12, ','), (12, ','), (290, (291, (292, (293, (295, (296, (297, (298, (299, (300, (301, (302, (303, (1, 'c'))))))))))))))), (4, ''), (0, '')) self.check_bad_tree(tree, "a,,c") def test_illegal_operator(self): # Illegal input: a $= b tree = \ (257, (264, (265, (266, (267, (312, (291, (292, (293, (294, (296, (297, (298, (299, (300, (301, (302, (303, (304, (1, 'a'))))))))))))))), (268, (37, '$=')), (312, (291, (292, (293, (294, (296, (297, (298, (299, (300, (301, (302, (303, (304, (1, 'b'))))))))))))))))), (4, ''))), (0, '')) self.check_bad_tree(tree, "a $= b") def test_malformed_global(self): #doesn't have global keyword in ast tree = (257, (264, (265, (266, (282, (1, 'foo'))), (4, ''))), (4, ''), (0, '')) self.check_bad_tree(tree, "malformed global ast") def test_missing_import_source(self): # from import fred tree = \ (257, (268, (269, (270, (282, (284, (1, 'from'), (1, 'import'), (287, (285, (1, 'fred')))))), (4, ''))), (4, ''), (0, '')) self.check_bad_tree(tree, "from import fred") def test_illegal_encoding(self): # Illegal encoding declaration tree = \ (341, (257, (0, ''))) self.check_bad_tree(tree, "missed encoding") tree = \ (341, (257, (0, '')), b'iso-8859-1') self.check_bad_tree(tree, "non-string encoding") tree = \ (341, (257, (0, '')), '\udcff') with self.assertRaises(UnicodeEncodeError): parser.sequence2st(tree) def test_invalid_node_id(self): tree = (257, (269, (-7, ''))) self.check_bad_tree(tree, "negative node id") tree = (257, (269, (99, ''))) self.check_bad_tree(tree, "invalid token id") tree = (257, (269, (9999, (0, '')))) self.check_bad_tree(tree, "invalid symbol id") def test_ParserError_message(self): try: parser.sequence2st((257,(269,(257,(0,''))))) except parser.ParserError as why: self.assertIn("compound_stmt", str(why)) # Expected self.assertIn("file_input", str(why)) # Got class CompileTestCase(unittest.TestCase): # These tests are very minimal. :-( def test_compile_expr(self): st = parser.expr('2 + 3') code = parser.compilest(st) self.assertEqual(eval(code), 5) def test_compile_suite(self): st = parser.suite('x = 2; y = x + 3') code = parser.compilest(st) globs = {} exec(code, globs) self.assertEqual(globs['y'], 5) def test_compile_error(self): st = parser.suite('1 = 3 + 4') self.assertRaises(SyntaxError, parser.compilest, st) def test_compile_badunicode(self): st = parser.suite('a = "\\U12345678"') self.assertRaises(SyntaxError, parser.compilest, st) st = parser.suite('a = "\\u1"') self.assertRaises(SyntaxError, parser.compilest, st) def test_issue_9011(self): # Issue 9011: compilation of an unary minus expression changed # the meaning of the ST, so that a second compilation produced # incorrect results. st = parser.expr('-3') code1 = parser.compilest(st) self.assertEqual(eval(code1), -3) code2 = parser.compilest(st) self.assertEqual(eval(code2), -3) def test_compile_filename(self): st = parser.expr('a + 5') code = parser.compilest(st) self.assertEqual(code.co_filename, '') code = st.compile() self.assertEqual(code.co_filename, '') for filename in 'file.py', b'file.py': code = parser.compilest(st, filename) self.assertEqual(code.co_filename, 'file.py') code = st.compile(filename) self.assertEqual(code.co_filename, 'file.py') for filename in bytearray(b'file.py'), memoryview(b'file.py'): with self.assertWarns(DeprecationWarning): code = parser.compilest(st, filename) self.assertEqual(code.co_filename, 'file.py') with self.assertWarns(DeprecationWarning): code = st.compile(filename) self.assertEqual(code.co_filename, 'file.py') self.assertRaises(TypeError, parser.compilest, st, list(b'file.py')) self.assertRaises(TypeError, st.compile, list(b'file.py')) class ParserStackLimitTestCase(unittest.TestCase): """try to push the parser to/over its limits. see http://bugs.python.org/issue1881 for a discussion """ def _nested_expression(self, level): return "["*level+"]"*level def test_deeply_nested_list(self): # This has fluctuated between 99 levels in 2.x, down to 93 levels in # 3.7.X and back up to 99 in 3.8.X. Related to MAXSTACK size in Parser.h e = self._nested_expression(99) st = parser.expr(e) st.compile() def test_trigger_memory_error(self): e = self._nested_expression(100) rc, out, err = assert_python_failure('-Xoldparser', '-c', e) # parsing the expression will result in an error message # followed by a MemoryError (see #11963) self.assertIn(b's_push: parser stack overflow', err) self.assertIn(b'MemoryError', err) class STObjectTestCase(unittest.TestCase): """Test operations on ST objects themselves""" def test_comparisons(self): # ST objects should support order and equality comparisons st1 = parser.expr('2 + 3') st2 = parser.suite('x = 2; y = x + 3') st3 = parser.expr('list(x**3 for x in range(20))') st1_copy = parser.expr('2 + 3') st2_copy = parser.suite('x = 2; y = x + 3') st3_copy = parser.expr('list(x**3 for x in range(20))') # exercise fast path for object identity self.assertEqual(st1 == st1, True) self.assertEqual(st2 == st2, True) self.assertEqual(st3 == st3, True) # slow path equality self.assertEqual(st1, st1_copy) self.assertEqual(st2, st2_copy) self.assertEqual(st3, st3_copy) self.assertEqual(st1 == st2, False) self.assertEqual(st1 == st3, False) self.assertEqual(st2 == st3, False) self.assertEqual(st1 != st1, False) self.assertEqual(st2 != st2, False) self.assertEqual(st3 != st3, False) self.assertEqual(st1 != st1_copy, False) self.assertEqual(st2 != st2_copy, False) self.assertEqual(st3 != st3_copy, False) self.assertEqual(st2 != st1, True) self.assertEqual(st1 != st3, True) self.assertEqual(st3 != st2, True) # we don't particularly care what the ordering is; just that # it's usable and self-consistent self.assertEqual(st1 < st2, not (st2 <= st1)) self.assertEqual(st1 < st3, not (st3 <= st1)) self.assertEqual(st2 < st3, not (st3 <= st2)) self.assertEqual(st1 < st2, st2 > st1) self.assertEqual(st1 < st3, st3 > st1) self.assertEqual(st2 < st3, st3 > st2) self.assertEqual(st1 <= st2, st2 >= st1) self.assertEqual(st3 <= st1, st1 >= st3) self.assertEqual(st2 <= st3, st3 >= st2) # transitivity bottom = min(st1, st2, st3) top = max(st1, st2, st3) mid = sorted([st1, st2, st3])[1] self.assertTrue(bottom < mid) self.assertTrue(bottom < top) self.assertTrue(mid < top) self.assertTrue(bottom <= mid) self.assertTrue(bottom <= top) self.assertTrue(mid <= top) self.assertTrue(bottom <= bottom) self.assertTrue(mid <= mid) self.assertTrue(top <= top) # interaction with other types self.assertEqual(st1 == 1588.602459, False) self.assertEqual('spanish armada' != st2, True) self.assertRaises(TypeError, operator.ge, st3, None) self.assertRaises(TypeError, operator.le, False, st1) self.assertRaises(TypeError, operator.lt, st1, 1815) self.assertRaises(TypeError, operator.gt, b'waterloo', st2) def test_copy_pickle(self): sts = [ parser.expr('2 + 3'), parser.suite('x = 2; y = x + 3'), parser.expr('list(x**3 for x in range(20))') ] for st in sts: st_copy = copy.copy(st) self.assertEqual(st_copy.totuple(), st.totuple()) st_copy = copy.deepcopy(st) self.assertEqual(st_copy.totuple(), st.totuple()) for proto in range(pickle.HIGHEST_PROTOCOL+1): st_copy = pickle.loads(pickle.dumps(st, proto)) self.assertEqual(st_copy.totuple(), st.totuple()) check_sizeof = support.check_sizeof @support.cpython_only def test_sizeof(self): def XXXROUNDUP(n): if n <= 1: return n if n <= 128: return (n + 3) & ~3 return 1 << (n - 1).bit_length() basesize = support.calcobjsize('Piii') nodesize = struct.calcsize('hP3iP0h2i') def sizeofchildren(node): if node is None: return 0 res = 0 hasstr = len(node) > 1 and isinstance(node[-1], str) if hasstr: res += len(node[-1]) + 1 children = node[1:-1] if hasstr else node[1:] if children: res += XXXROUNDUP(len(children)) * nodesize for child in children: res += sizeofchildren(child) return res def check_st_sizeof(st): self.check_sizeof(st, basesize + nodesize + sizeofchildren(st.totuple())) check_st_sizeof(parser.expr('2 + 3')) check_st_sizeof(parser.expr('2 + 3 + 4')) check_st_sizeof(parser.suite('x = 2 + 3')) check_st_sizeof(parser.suite('')) check_st_sizeof(parser.suite('# -*- coding: utf-8 -*-')) check_st_sizeof(parser.expr('[' + '2,' * 1000 + ']')) # XXX tests for pickling and unpickling of ST objects should go here class OtherParserCase(unittest.TestCase): def test_two_args_to_expr(self): # See bug #12264 with self.assertRaises(TypeError): parser.expr("a", "b") class TestDeprecation(unittest.TestCase): def test_deprecation_message(self): code = "def f():\n import parser\n\nf()" rc, out, err = assert_python_ok('-c', code) self.assertIn(b':2: DeprecationWarning', err) if __name__ == "__main__": unittest.main()