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ãŸããPythonã®èå³æ·±ãæ©èœã¯æ³šç®ã«å€ããŸãã æŒç®åãã©ã±ããïŒbegin..end in pascalãŸãã¯{..} in CïŒ ãå«ãŸããã代ããã«ãããã¯ãã€ã³ãã³ããããŸããã¹ããŒã¹ãŸãã¯ã¿ãã§ãæŒç®åãããããã¯ãžã®å
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ã=ãèšå·ã¯ãå€æ°ã«å€ãå²ãåœãŠããããããã³æ¯èŒã®ããã«äœ¿çšãããŸã-
ã==ãã å€æ°ã®å€ãå¢ããããŸãã¯è¡ã«è¿œå ããã«ã¯ãæŒç®åã+ =ãã䜿çšããå€ãæžããã«ã¯ã-=ãã䜿çšããŸãã ããããã¹ãŠã®æäœã¯ãæååãå«ãã»ãšãã©ã®ã¿ã€ããšããåãã§ããŸãã äŸãã°
>>> myvar = 3
>>> myvar + = 2
>>> myvar-= 1
"" "ããã¯è€æ°è¡ã®ã³ã¡ã³ãã§ã
3ã€ã®äºéåŒçšç¬Šã§å²ãŸããæååã¯ç¡èŠãããŸã» ""
>>> mystring = "Hello"
>>> mystring + = "world"ã
>>> mystringãå°å·
ãããŒã¯ãŒã«ã
ïŒæ¬¡ã®è¡ãå€æŽãããŸã
å Žæã®å€æ°ã®å€ã ïŒãã£ã1è¡ïŒïŒ
>>> myvarãmystring = mystringãmyvar
ããŒã¿æ§é
Pythonã«ã¯ã ãªã¹ããã¿ãã«ãèŸæžãªã©ã®ããŒã¿æ§é ãå«ãŸããŠããŸã ã ãªã¹ãã¯1次å é åã«äŒŒãŠããŸãïŒãã ãããªã¹ããå«ããªã¹ã-å€æ¬¡å é åã䜿çšã§ããŸãïŒãã¿ãã«-äžå€ãªã¹ããèŸæž-ãªã¹ãã䜿çšã§ããŸãããã€ã³ããã¯ã¹ã¯æ°å€ã ãã§ãªãä»»æã®ã¿ã€ãã«ããããšãã§ããŸãã Pythonã®é åã«ã¯ä»»æã®åã®ããŒã¿ãå«ããããšãã§ããŸããã€ãŸããåäžã®é åã«æ°å€ãæååããã®ä»ã®ããŒã¿åãå«ããããšãã§ããŸãã é åã¯ã€ã³ããã¯ã¹0ã§å§ãŸããæåŸã®èŠçŽ ã¯ã€ã³ããã¯ã¹-1ã§ååŸã§ããŸããé¢æ°ãå€æ°ã«å²ãåœãŠãŠãããããé©å®äœ¿çšã§ããŸãã
>>> sample = [ 1 ã[ "another" ã "list" ]ãïŒ "a" ã "tuple" ïŒ] ïŒãªã¹ãã¯æŽæ°ãå¥ã®ãªã¹ããããã³ã¿ãã«ã§æ§æãããŸã
>>> mylist = [ "ãªã¹ãé ç®1" ã 2ã3 ã 14 ] ïŒãã®ãªã¹ãã«ã¯ãæååãæŽæ°ãå°æ°ãå«ãŸããŸã
>>> mylist [ 0 ] = "List item 1 again" ïŒmylistã·ãŒãã®æåã®ïŒãŒãïŒèŠçŽ ãå€æŽãã
>>> mylist [ -1 ] = 3 ã 14 ïŒã·ãŒãã®æåŸã®èŠçŽ ãå€æŽãã
>>> mydict = { "ããŒ1" ïŒ "å€1" ã 2 ïŒ 3 ã "pi" ïŒ 3 ã 14 } ïŒæ°å€ã€ã³ããã¯ã¹ãšæŽæ°ã€ã³ããã¯ã¹ã䜿çšããŠèŸæžãäœæããŸã
>>> mydict [ "pi" ] = 3 ã 15 ïŒã€ã³ããã¯ã¹ãpiãã®äžã®èŸæžèŠçŽ ãå€æŽããŸãã
>>> mytuple =ïŒ 1ã2ã3 ïŒ ïŒã¿ãã«ãèšå®ãã
>>> myfunction = len #Pythonã«ãããé¢æ°ã®å矩èªã宣èšã§ããŸã
>>> myfunctionãå°å· ïŒ ãªã¹ã ïŒ
3
ã³ãã³ãïŒãã§æåãšæåŸã®ã€ã³ããã¯ã¹ãæå®ããããšã«ãããé åã®äžéšã䜿çšã§ããŸãã ãã®å Žåãæåã®ã€ã³ããã¯ã¹ãã2çªç®ã®ã€ã³ããã¯ã¹ãŸã§ãå æ¬çã§ã¯ãªãé åã®äžéšãååŸããŸãã æåã®èŠçŽ ãæå®ãããŠããªãå Žåãé åã®å é ããã«ãŠã³ããéå§ãããæåŸã®èŠçŽ ãæå®ãããŠããªãå Žåãé åã¯æåŸã®èŠçŽ ãŸã§èªã¿åãããŸãã è² ã®å€ã¯ãèŠçŽ ã®äœçœ®ãæåŸãã決å®ããŸãã äŸïŒ
>>> mylist = [ "ãªã¹ãé ç®1" ã 2ã3 ã 14 ]
>>> print mylist [ïŒ] ïŒãã¹ãŠã®é åèŠçŽ ãèªã¿åãããŸã
[ ããªã¹ãé ç®1ã ã 2ã3 ã 1400000000000001 ]
>>> print mylist [ 0 ïŒ 2 ] ïŒé åã®ãŒãããã³æåã®èŠçŽ ãèªã¿åããŸãã
[ 'ãªã¹ãé ç®1' ã 2 ]
>>> print mylist [ -3 ïŒ -1 ] ïŒèŠçŽ ã¯ãŒãïŒ-3ïŒãã2çªç®ïŒ-1ïŒã«èªã¿èŸŒãŸããŸãïŒå æ¬çã§ã¯ãããŸããïŒ
[ 'ãªã¹ãé ç®1' ã 2 ]
>>> print mylist [ 1 ïŒ] ïŒèŠçŽ ã¯æåããæåŸãŸã§èªã¿èŸŒãŸããŸã
[ 2ã3 ã 14 ]
è¡
Pythonã®è¡ã¯ãäºé "" "ãŸãã¯åäž" '"ã§äºéåŒçšç¬Šã§å²ãŸããŠããŸã ãäºéåŒçšç¬Šã®äžã«ã¯ãåäžãŸãã¯ãã®éãååšããå¯èœæ§ããããŸããããšãã°ããHeââ said'hello'ïŒè€æ°è¡ã®æååã䜿çšããå¿ èŠãããå Žåããã®è¡ã¯3ã€ã®äºéåŒçšç¬Š "" "" "ã§éå§ããã³çµäºããå¿ èŠããããŸãã ã¿ãã«ãŸãã¯èŸæžã®èŠçŽ ãæååãã³ãã¬ãŒãã«çœ®ãæããããšãã§ããŸãã æååãšã¿ãã«ã®éã®ããŒã»ã³ãèšå·ãïŒ ãã¯ãæååã®æåãïŒ sããã¿ãã«èŠçŽ ã«çœ®ãæããŸãã èŸæžã䜿çšãããšãç¹å®ã®ã€ã³ããã¯ã¹ã«ããèŠçŽ ãæååã«æ¿å ¥ã§ããŸãã ãããè¡ãã«ã¯ãæååã§æ§æãïŒ ïŒindexïŒsãã䜿çšããŸãã ãã®å ŽåããïŒ ïŒindexïŒsãã®ä»£ããã«ãæå®ãããã€ã³ããã¯ã¹ã§èŸæžã®å€ã眮ãæããããŸãã
>>> print â NameïŒïŒ s \ nNumberïŒïŒ s \ nStringïŒïŒ sâ ïŒ ïŒmy class .nameã 3ã3 * "-" ïŒ
ååïŒããã¡ãã¹
æ°ïŒ 3
æååïŒ-
strString = "" "ãã®ããã¹ãã¯ãããŸã
è€æ°è¡ã§Â» ""
>>> ãThisïŒ ïŒåè©ïŒsaïŒ ïŒåè©ïŒsãã å°å·ããŸã ã ïŒ { "åè©" ïŒ "ãã¹ã" ã "åè©" ïŒ "ã¯" }
ããã¯ãã¹ãã§ãã
ãªãã¬ãŒã¿ãŒ
whileã if ã forã¹ããŒãã¡ã³ãã¯ãmoveã¹ããŒãã¡ã³ããæ§æããŸãã selectã¹ããŒãã¡ã³ãã«é¡äŒŒãããã®ã¯ãªãããã ifãå®è¡ããå¿ èŠããããŸãã forã¹ããŒãã¡ã³ãã¯ã å€æ°ãšãªã¹ããæ¯èŒããŸã ã çªå·<number>ãŸã§ã®æ°åã®ãªã¹ããååŸããã«ã¯ãç¯å²ïŒ<number>ïŒé¢æ°ã䜿çšããŸãã æŒç®åã䜿çšããäŸã次ã«ç€ºããŸã
rangelist = range ïŒ 10 ïŒ ïŒ10æ¡ã®ãªã¹ããååŸïŒ0ã9ïŒ
>>>ç¯å²ãªã¹ããå°å·
[ 0ã1ã2ã3ã4ã5ã6ã7ã8ã9 ]
ç¯å²ãªã¹ãå ã®æ°å€ïŒ ïŒå€æ°çªå·ïŒæ¯å1ãã€å¢å ïŒããªã¹ãã«ããéã«...
ïŒå€æ°ãå«ãŸããŠãããã©ããã確èªããŸã
ïŒæ°åã®ã¿ãã«å ã®æ°å ïŒ 3ã4ã7ã9 ïŒ
if number in ïŒ 3ã4ã7ã9 ïŒïŒ ïŒå€æ°çªå·ãã¿ãã«ïŒ3ã4ã7ã9ïŒã«ããå Žå...
ïŒæäœã break ããæäŸãã
ïŒãã€ã§ãã«ãŒããæãã
ç Žã
ãã®ä» ïŒ
ïŒã ç¶è¡ ãã¹ã¯ããŒã«
ïŒãµã€ã¯ã«ã ãã®æäœã®åŸãããã¯ããã§ã¯å¿ èŠãããŸããã
ïŒãããã«ããŠããããã°ã©ã ã¯ã«ãŒãåŠçã«æ»ããŸã
ç¶ãã
ãã®ä» ïŒ
ïŒã Else ãã¯ãªãã·ã§ã³ã§ãã æ¡ä»¶ãæºããããŠãã
ïŒã«ãŒããã break ãã§äžæãããŠããªãå Žåã
ãã¹ ïŒäœãããªã
rangelist [ 1 ] == 2ã®å Žå ïŒ
print "2çªç®ã®é ç®ïŒãªã¹ãã¯0ããŒã¹ïŒã¯2ã§ã"
elif rangelist [ 1 ] == 3 ïŒ
print ã2çªç®ã®é ç®ïŒãªã¹ãã¯0ããŒã¹ïŒã¯3ã§ãã
ãã®ä» ïŒ
ãDunnoãã å°å·
äžæ¹ã rangelist [ 1 ] == 1 ïŒ
åæ Œãã
æ©èœ
é¢æ°ã宣èšããã«ã¯ã ããŒã¯ãŒãdefã䜿çšããŸãã é¢æ°ã®åŒæ°ã¯ãé¢æ°åã®åŸã«æ¬åŒ§ã§å²ãŸããŠç€ºãããŸãã ããã©ã«ãå€ãæå®ããããšã«ããããªãã·ã§ã³ã®åŒæ°ãæå®ã§ããŸãã é¢æ°ã¯ã¿ãã«ãè¿ãããšãã§ããŸãããã®å Žåãæ»ãå€ãã³ã³ãã§åºåã£ãŠèšè¿°ããå¿ èŠããããŸãã ããŒã¯ãŒãã lambda ãã¯ãåºæ¬æ©èœã宣èšããããã«äœ¿çšãããŸãã
ïŒarg2ãšarg3ã¯ãªãã·ã§ã³ã®åŒæ°ã§ãããããã©ã«ãã§å®£èšãããå€ãåããŸãã
ïŒé¢æ°ãåŒã³åºããšãã«ç°ãªãå€ãèšå®ããªãå Žåã
def myfunctionïŒarg1ãarg2 = 100 ãarg3 = "test" ïŒïŒ
arg3ãarg2ãarg1ãè¿ããŸã
ïŒãã®é¢æ°ã¯ãæåã®åŒæ°-ãåŒæ°1ãã2çªç®-ããã©ã«ããããã³3çªç®-ãååä»ãåŒæ°ãã®å€ã§åŒã³åºãããŸã ã
>>> ret1ãret2ãret3 = myfunctionïŒ "åŒæ°1" ãarg3 = "ååä»ãåŒæ°" ïŒ
ïŒret1ãret2ãret3ã¯ãããããååä»ãåŒæ°ãã100ããåŒæ°1ãã®å€ãåããŸã
>>> ret1ãret2ãret3ãå°å·
ååä»ãåŒæ°100åŒæ°1
ïŒæ¬¡ã®ãšã³ããªã¯def fïŒxïŒãšåçã§ãïŒ return x + 1
functionvar = lambda xïŒx + 1
>>> print functionvarïŒ 1 ïŒ
2
ã¯ã©ã¹
Pythonã¯ã¯ã©ã¹ã®å€éç¶æ¿ã«å¶éãããŠããŸãã å éšå€æ°ãšå éšã¯ã©ã¹ã¡ãœããã¯ã2ã€ã®ã¢ã³ããŒã¹ã³ã¢ã__ãã§å§ãŸããŸãïŒããšãã°ãã__ myprivatevarãïŒã å€éšããã¯ã©ã¹å€æ°ã«å€ãå²ãåœãŠãããšãã§ããŸãã äŸïŒ
ã¯ã©ã¹ç§ã®ã¯ã©ã¹ ïŒ
å ±é= 10
def __init __ïŒ self ïŒïŒ
self .myvariable = 3
def myfunctionïŒ self ãarg1ãarg2ïŒïŒ
èªå·±ãè¿ããŸãã
ïŒããã§ã¯ã©ã¹My ã¯ã©ã¹ã宣èšããŸããã __init__é¢æ°ã¯ãã¯ã©ã¹ãåæåããããšãã«èªåçã«åŒã³åºãããŸãã
>>> classinstance = My class ïŒïŒ ïŒ ã¯ã©ã¹ ãåæåããmyvariableå€æ°ã¯åæåã¡ãœããã§è¿°ã¹ãããŠããããã«å€3ãååŸããŸãã
>>> classinstance.myfunctionïŒ 1ã2 ïŒ ïŒã¯ã©ã¹ã®myfunctionã¡ãœããMy ã¯ã©ã¹ã¯myvariableå€æ°ã®å€ãè¿ããŸã
3
ïŒå ±éå€æ°ã¯ãã¹ãŠã®ã¯ã©ã¹ã§å®£èšãããŠããŸã
>>> classinstance2 =ç§ã®ã¯ã©ã¹ ïŒïŒ
>>> classinstance.common
10
>>> classinstance2.common
10
ïŒãããã£ãŠãã¯ã©ã¹ã§å€ãå€æŽãããšãMy ã¯ã©ã¹ ãå€æŽãããŸã
ïŒã¯ã©ã¹My ã¯ã©ã¹ã«ãã£ãŠåæåããããªããžã§ã¯ãå ã®ãã®å€
>>> Myclass.common = 30
>>> classinstance.common
30
>>> classinstance2.common
30
ïŒãããŠãããã§ã¯ã¯ã©ã¹å€æ°ãå€æŽããŸããã 代ããã«
ïŒãªããžã§ã¯ãã§å®£èšããæ°ããå€ãå²ãåœãŠãŸã
>>> classinstance.common = 10
>>> classinstance.common
10
>>> classinstance2.common
30
>>> Myclass.common = 50
ïŒã¯ã©ã¹å€æ°ãå€æŽããŠã圱é¿ã¯ãããŸãã
ïŒãã®ã¯ã©ã¹ã®å€æ°ãªããžã§ã¯ã
>>> classinstance.common
10
>>> classinstance2.common
50
ïŒæ¬¡ã®ã¯ã©ã¹ã¯ã¯ã©ã¹My ã¯ã©ã¹ã®ç¶æ¿è ã§ã
ïŒã¯ã©ã¹ãã§ããããããã£ãšã¡ãœããã®ç¶æ¿
ïŒããã€ãã®ã¯ã©ã¹ããã®å Žåã¯ãšã³ããªããç¶æ¿
ïŒsuchïŒ class OtherclassïŒMyclass1ãMyclass2ãMyclassNïŒ
ã¯ã©ã¹ OtherclassïŒMyclassïŒïŒ
def __init __ïŒ self ãarg1ïŒïŒ
self .myvariable = 3
arg1ãåºå
>>> classinstance = OtherclassïŒ "hello" ïŒ
ããã«ã¡ã¯
>>> classinstance.myfunctionïŒ 1ã2 ïŒ
3
ïŒãã®ã¯ã©ã¹ã«ã¯ãã¹ãã¯ãããŸããããã§ããŸã
ïŒãªããžã§ã¯ãã«ãã®ãããªå€æ°ã宣èšããŸãã ããã«
ïŒãã®å€æ°ã¯ã ã¯ã©ã¹ã€ã³ã¹ã¿ã³ã¹ã®ã¡ã³ããŒã®ã¿ã§ãã
>>> classinstance.test = 10
>>> classinstance.test
10
äŸå€
Pythonã®äŸå€ã«ã¯tryããããŸã -[ionname ãé€ã ]æ§é ãé€ã ïŒ
def somefunctionïŒïŒïŒ
è©ŠããŠãã ãã ïŒ
ïŒãŒãã«ããé€ç®ã¯ãšã©ãŒãåŒãèµ·ãããŸã
10/0
ZeroDivisionError ãé€ã ïŒ
ïŒããããããã°ã©ã ã¯ãç¡å¹ãªæäœã®å®è¡ãã§ã¯ãããŸãã
ïŒãããŠããšã©ãŒãZeroDivisionErrorãã«å¯Ÿå¿ããäŸå€ãããã¯ãåŠçããŸã
ããã£ãšãç¡å¹ã§ããã
>>> fnïŒ ãé€ã ïŒ
ãã£ãšãç¡å¹ã§ãã
ã€ã³ããŒã
å€éšã©ã€ãã©ãªã¯ãã import [libname]ãæé ã䜿çšããŠæ¥ç¶ã§ããŸãã[libname]ã¯æ¥ç¶ããã©ã€ãã©ãªã®ååã§ãã ã from [libname] import [funcname]ãã³ãã³ãã䜿çšããŠã[libname]ã©ã€ãã©ãªã®[funcname]é¢æ°ã䜿çšããããšãã§ããŸãã
import random ïŒã©ã€ãã©ãªãrandomããã€ã³ããŒãããŸã
æå» ã€ã³ããŒãã¯ããã¯ãã ïŒãããŠåæã«ãã©ã€ãã©ãª "time"ããã®é¢æ° "clock"
randomint = random .randintïŒ1ã100ïŒ
>>> randomintãåºå
64
ãã¡ã€ã«ã·ã¹ãã ãæäœãã
Pythonã«ã¯å€ãã®çµã¿èŸŒã¿ã©ã€ãã©ãªããããŸãã ãã®äŸã§ã¯ããªã¹ãæ§é ããã€ããªãã¡ã€ã«ã«ä¿åããèªã¿åããè¡ãããã¹ããã¡ã€ã«ã«ä¿åããããšããŸãã ããŒã¿æ§é ãå€æããã«ã¯ãæšæºã®pickleã©ã€ãã©ãªã䜿çšããŸã
èŒžå ¥ 挬ç©
mylist = [ "This" ã "is" ã 4ã13327 ]
ïŒæžã蟌ã¿çšã«ãã¡ã€ã«CïŒ\ binary.datãéããŸãã èšå·ãrã
ïŒã¯ãç¹æ®æåïŒ\ nã\ tã\ bãªã©ïŒã®çœ®æãé²ããŸãã
myfile = file ïŒr "CïŒ\ binary.dat" ã "w" ïŒ
pickle .dumpïŒmylistãmyfileïŒ
myfile.closeïŒïŒ
myfile = file ïŒr "CïŒ\ text.txt" ã "w" ïŒ
myfile.writeïŒ "ããã¯ãµã³ãã«æååã§ã" ïŒ
myfile.closeïŒïŒ
myfile = file ïŒr "CïŒ\ text.txt" ïŒ
>>> print myfile.readïŒïŒ
ãããã¯ãµã³ãã«æååã§ãã
myfile.closeïŒïŒ
ïŒèªã¿åãçšã«ãã¡ã€ã«ãéã
myfile = file ïŒr "CïŒ\ binary.dat" ïŒ
loadedlist = pickle .loadïŒmyfileïŒ
myfile.closeïŒïŒ
>>>ããŒãæžã¿ãªã¹ããå°å·
[ 'ãã' ã 'is' ã 4ã13327 ]
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>>> print [lst1ã®xã®x * y ãš lst2 ã® yã®x]
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