资源描述：
《An_Introduction_to_Python_for_UNIX_C_Programmers》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、AnIntroductiontoPythonforUNIX/CProgrammersGuidovanRossumCWI,P.O.Box94079,1090GBAmsterdamEmail:guido@cwi.nlAbstractPythonisaninterpreted,object-orientedlanguagesuitableformanypurposes.Ithasaclear,intuitivesyntax,powerfulhigh-leveldatastructures,andaflexibl
2、edynamictypesystem.Pythoncanbeusedinteractively,instand-alonescripts,forlargeprograms,orasanextensionlanguageforexistingapplications.ThelanguagerunsonUNIX,Macintosh,andDOSmachines.Sourceanddocumentationareavailablebyanonymousftp.Pythoniseasilyextensiblet
3、hroughmoduleswritteninCorC++,andcanalsobeembeddedinapplicationsasalibrary.ExistingextensionsprovideaccesstomoststandardUNIXlibraryfunctionsandsystemcalls(includingprocessesmanagement,socketandioctloperations),aswellastolargepackageslikeX11/Motif.Thereare
4、alsoanumberofsystem-specificextensions,e.g.tointerfacetotheSunandSGIaudiohardware.AlargelibraryofstandardmoduleswritteninPythonalsoexists.ComparedtoC,Pythonprogramsaremuchshorter,andconsequentlymuchfastertowrite.IncomparisonwithPerl,Pythoncodeiseasiertore
5、ad,writeandmaintain.RelativetoTCL,Pythonisbettersuitedforlargerormorecomplicatedprograms.1.IntroductionPythonisanewkindofscriptinglanguage,andasmostscriptinglanguagesitisbuiltaroundaninter-preter.Manytraditionalscriptingandinterpretedlanguageshavesacrific
6、edsyntacticclaritytosimplifyparserconstruction;considere.g.thepainfulsyntaxneededtocalculatethevalueofsimpleexpressionslikea+b*cinLisp,SmalltalkortheBourneshell.Others,e.g.APLandPerl,supportarithmeticexpres-sionsandotherconveniences,buthavemadecrypticone
7、-linersintoanartform,turningprogrammain-tenanceintoanightmare.Pythonprograms,ontheotherhand,areneitherhardtowritenorhardtoread,anditsexpressivepoweriscomparabletothelanguagesmentionedabove.YetPythonisnotbig:theentireinterpreterfitsin200kilobytesonaMacinto
8、sh,andthisevenincludesawindowinginterface!1Pythonisusedorproposedasanapplicationdevelopmentlanguageandasanextensionlanguagefornon-expertprogrammersbyseveralcommercialsoftwarevendors.Ithasalsobeenusedsuccessfullyforseverall
