Python 语言程序设计

Python

AudreyK,Yuyuan,Laura

HistoryOfPython

WhatisPython?

Pythonisahighlevel,generalpurpose,opensourcecodinglanguage.InventedbyGuidovanRossumin1991,Pythonisoneoftheonlylanguagesthatdonotrequireacompiler,insteadusinganinterpretertotranslatePythonsyntaxintobinary.Asofnow,Pythonhas3differentversions,Python,Python2.0,andPython3.0.

TheBeginnings

GuidovanRossumstartedworkingonPythonin1989.Hemadeitsothatyoucouldunderstandandreadcodemoreeasily,aswellasmakewhatyouwantquickly.HehashelpedthedevelopmentofPythonthroughouttheyears,thoughsteppeddownin2018.

vanRossumoriginallystartedtheprojectofcreatingittooccupyhimselfovertheholidaysinDecember.TheinspirationforthenamecamefromMontyPython’sFlyingCircus.HewatchedtheshowonBBC,andthoughtthename‘Python’soundedcool.Thelanguagewasreleasedin1991.

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DifferentVersionsandKeyDifferences

Python2.0cameoutinOctoberof2000.

Python2’sprintfunctiondidn’trequireparenthesisaroundthesectionyouwantedtoprint.

Anotherdifferenceisthemath.InPython2,ifyouprinted3/2,youwouldget1.Youwouldneedtospecifyafloat.

Python3.0cameoutinDecember2008.

Python3’sprintfunctionrequiresparenthesisaroundthewords/variablesyouwantprinted.

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InPython3,ifyouprint3/2,youwouldget1.5.

Gamechangers

InPython3.7,anewfunctioncalledbreakpoint()wasimplemented.Thismadeiteasiertodebug.Itwouldtemporarilystopthecodesoyoucaninspectthecode/programwhereitiscurrently.Thisreplacedimportpdb;pdb.set_trace(),whichwoulddothesame,butwashardertounderstand.

Anotherpartofthisfunctionmeansyoucantype‘c’andpressenter,anditwouldcontinueonfromthepdbdebugging.

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MoreparentswantchildrenlearningPythonoverFrench.

TimPeterswroteapoemaboutPython.InPythonIDLE,ifyouwrite‘importthis’itwillcomeup

NASAhasusedPython

Pythonhasaneasysyntax,usingindentationtomakeeverythingneat.Itisreallyeasytolearn!

FunFacts!

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GeneralUses/Implementations

InAerospace/Astronomy

Hacking

IntheTechWorld

PythonforDataAnalysis

Oftenusedforriskassessmentandalgorithmictradingmodelsinfinance

Usingmachinelearningalgorithms,Pythoncandiagnoseandtreatdiseasesandoptimizehospitaloperations

Inagriculture,Pythonisusedtomakeyieldpredictionsandmanagecrops/insectswithIoT

AIinPython

WhychoosePython?ForAI,ithastheleastcodeoutofotherlanguages.

PythonhasalibraryspecificallyforAI/MachineLearning,whichmakesiteasiertocode.AIisabletopredictweatherbasedonconditionsthathaveoccuredbefore.

Pythonisalsousedwidely,andthecommunityresourcesandsupportmakeiteasy.AIisusedforfacialrecognition,healthcare,andmuchmore.Itisaveryusefulresource,andsimpleinPython.

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ProsandConsofPython

Pros:

Largeactivecommunity,VERYeasytolearn(comparedtoothercodinglanguages),multiplelibrariesfordifferentfunctions,integrationwithotherlanguagessuchasCandJava,productive

Cons:

Slowcomparedtootherlanguages,errormessagestakelongertoload,notfavorablewhendesigningmobileapps,largememoryconsumption

MoreApplications

Webdevelopment

Gamedevelopment

CAD

Otherembeddedapplications

PythonExamples

GuesstheNumber

RockPaperScissors

CaesarCipherEncoder

CaesarCipherDecoder

ChooseYourOwnAdventure

Sources-HistoryofPython

Python'screatorthinksithasadiversityproblem—Quartz

HistoryofPython

PythonDocumentationbyVersion

ThekeydifferencesbetweenPython2.7.xandPython3.xwithexamples

CoolNewFeaturesinPython3.7–RealPython

16FactsaboutPythonProgrammingthateveryGeekshouldknow

Sources-GeneralUses/Implementations

Top10PythonApplicationsintheRealWorld|UsesofPython

AdvantagesandDisadvantagesofPython

RoleofPythoninArtificialIntelligence(AI)|PythonMa