rabota s faylami vphyton
Sahifa ko'rinishi (5 sahifa)
Pastga aylantiring 👇![rabota s faylami tema rabota s faylami v phyton plan 1. osnovnie rejimi otkritiya faylov 2. otkritie i zakritie faylov 3. chtenie dannix iz fayla fayli tekstovie dvoichnie «plain text»: tekst, razbitiy na stroki; iz spetsialnix simvolov tolko simvoli perexoda na novuyu stroku lyubie simvoli risunki, zvuki, video, … fin = open ( "input.txt" ) fout = open ( "output.txt", "w" ) # zdes rabotaem s faylami fin.close() fout.close() faylovie peremennie-ukazateli "r" - chtenie "w" – zapis "a" – dobavlenie po umolchaniyu – na chtenie (rejim "r") otkrit fayl rabota s faylom zakrit fayl xleb xleb nachinka vvod dannix fin = open( "input.txt" ) s = fin.readline() # "1 2" chtenie stroki: chtenie stroki i razbivka po probelam: s = fin.readline().split() # ["1","2"] chtenie tselix chisel: s = fin.readline().split() # ["1","2"] a, b = int(s[0]), int(s[1]) ili tak: a, b = [int(x) for x in s] ili tak: a, b …](/media/previews/pages/p1_260388.webp "rabota s faylami vphyton - 1-sahifa")
![for x in a: fout.write ( str(x)+"\n" ) ili tak: for x in a: fout.write ( "{:4d}".format(x) ) obrabotka strok 10 zadacha. v fayle zapisano dannie o sobakax: v kajdoy strochke klichka sobaki, ee vozrast i poroda: muxtar 4 nemetskaya ovcharka vivesti v drugoy fayl svedeniya o sobakax, kotorim menshe 5 let. poka ne konets fayla fin prochitat stroku iz fayla fin razobrat stroku – videlit vozrast esli vozrast < 5 to zapisat stroku v fayl fout algoritmizatsiya i programmirovanie, yazik python, 10 klass k.yu. polyakov, e.a. eryomin, 2014 http://kpolyakov.spb.ru chtenie dannix iz fayla 11 chtenie odnoy stroki: s = fin.readline() razbivka po probelam: data = s.split() videlenie vozrasta: sage = data[1] age = int ( sage ) kratko vsyo vmeste: s = fin.readline() age = int ( s.split()[1] ) algoritmizatsiya i programmirovanie, yazik python, 10 klass k.yu. polyakov, e.a. eryomin, 2014 http://kpolyakov.spb.ru obrabotka strok 12 fin = …](/media/previews/pages/p2_260388.webp "rabota s faylami vphyton - 2-sahifa")
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rabota s faylami tema rabota s faylami v phyton plan 1. osnovnie rejimi otkritiya faylov 2. otkritie i zakritie faylov 3. chtenie dannix iz fayla fayli tekstovie dvoichnie «plain text»: tekst, razbitiy na stroki; iz spetsialnix simvolov tolko simvoli perexoda na novuyu stroku lyubie simvoli risunki, zvuki, video, … fin = open ( "input.txt" ) fout = open ( "output.txt", "w" ) # zdes rabotaem s faylami fin.close() fout.close() faylovie peremennie-ukazateli "r" - chtenie "w" – zapis "a" – dobavlenie po umolchaniyu – na chtenie (rejim "r") otkrit fayl rabota s faylom zakrit fayl xleb xleb nachinka vvod dannix fin = open( "input.txt" ) s = fin.readline() # "1 2" chtenie stroki: chtenie stroki i razbivka po probelam: s = …
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