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LING408/508:ProgrammingforLinguists
Lecture24
November30th
Administrivia
• Youshouldbeworkingonyourprogrammingproject
• Homework11today– opJonal– easyopportunitytomakeuppoints– dueFridaynightbymidnight
LastTime• Chapter6:
– CoolprogramtointeracJvelyspecifyatriangleandcalculateitsperimeter
LastTime
LastTime• Chapter7:DecisionStructures
– if <condition>: !<body> !
– elif <condition>: !<body> !
– else: !<body> !
– try: !<body> !
– except <error>: !<body> !
– except: !<body>!
Today'sTopics
• Chapter8:LoopStructuresandBooleans
condiJonalexecuJon• variable:__name__ !FileexecuJon/import• python file.py __name__ is '__main__' !• import file.py __name__ is 'file' !
Loops• Alreadyseenforloops:
• while<condiJon>:<body>
sameas
Loops
Problem:keepsprompJngforyes/no
LoopsabeWerprogram:• usesraw_inputandeval !• whilelooptestsforemptystring
Loops
Emptyline:includesanewline"\n"Endoffile:""
Loops
mulJplenumbersononelineseparatedbycommas
LoopandaHalf
CondiJons
• bool:TrueorFalse
Javascript:• undefined,null,NaN,0and""arefalse• everythingelsewithavalueistrue
comparisons
• CompoundcondiJonal:not <expr> !
notthesameas
comparisons
• Defaultvaluesusingbooleans:
withimplicitcoercionofstringtobool
comparisons
• Defaultvaluesusingbooleans:
aonelinewonder!(originalcodehad5lines)
Homework11
• ImplementanytwooftheProgrammingProblemsinChapter8(pp.262–264)
Chapter9
Chapter9
• RacquetballsimulaJonprogram– useslibrarymodulerandom
Chapter9
Chapter9
Chapter9
Chapter9
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