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ä»åã¯ä»åŸã©ã®ãããªããšãåŠãã§ãããã«ã€ããŠã倧ãŸãã«ç޹ä»ããåãšãªããŸãããã®ãããããããã®çްãã解説ã¯ããŸãããŸãããå¿é ããªããŠãä»åŸã®é£èŒã§é ã«æ±ã£ãŠãããŸãã®ã§ããŸãã¯æ·±ãããšã¯èããã«æãåãããŠããã°ã©ãã³ã°ã§ã©ã®ãããªããšãã§ããã®ãæããŠã¿ãŠãã ããã
ã§ã¯ããã£ããã¯ãããŠãããŸããããPythonã®ããã³ãããèµ·åããŠãã ãããã³ã³ãœãŒã«ç»é¢ã«âpythonâãšæã€ãããIDLEããèµ·åããããšã§ããã³ããããã¡ãããã®ã§ãããã詳ãããããããããããªãå Žåã¯ååã®ãšã³ããªãåèã«Pythonã®ç°å¢ãæ§ç¯ããŠãã ããã
å€ãã®ããã°ã©ãã³ã°èšèªã¯ãäžè¡äžè¡ã«é ã«åœä»€ãæžããŠããããšã§è€éãªåŠçãå®çŸããŸããPythonããããšåãã§ãã
ãŸãã¯ç°¡åãªæ°å€èšç®ããããŠã¿ãŸããèšç®åŒãæžããšããã®çµæãè¿ãããŸããé»å代ããã«äœ¿ããŠäŸ¿å©ã§ãããã¡ãªã¿ã«ãâ*âèšå·ã¯æãç®ã§ãã
>>> 1 + 2
3
>>> 3 - 4
-1
>>> 5 * 6
30
äžèšãç«æŽŸãªããã°ã©ã ãªã®ã§ãããäžè¡ã§ã§ããããšã¯éãããŠããŸãã®ã§ãåçŽãªåŠçããæžãããšãã§ããŸãããããè€éãªããšããããå Žåã¯ã1è¡ç®ã®çµæã2è¡ç®ã§å©çšãããšãã£ãå ·åã«ãè€æ°è¡ãçµã¿åãããŠå®è¡ããå¿ èŠããããŸãããã®å ŽåããåŠçã®çµæãä¿åãããããšãå¿ èŠãšãªãããã®ããã«ã倿°ãã䜿ããŸãã以äžã«å ·äœäŸã瀺ããŸãã
>>> abc = 1 + 2
>>> abc + 3
6
äžã®äŸã§ã¯1 + 2ã®çµæããabcãã«ä¿åããŠããã®çµæã«+ 3ããŠ6ãåŸãŠããŸãããã®ä¿åã«å©çšããŠããabcãã倿°ãã§ã= èšå·ã®å³åŽã®çµæããå·ŠåŽã®å€æ°ã«æ ŒçŽããŸãã倿°ã«å©çšããæåã¯abcã§ãªããŠãæ§ããŸããããããã°ã©ãã³ã°ã®ææ³ã§äœ¿ããããç¹å®ã®ããŒã¯ãŒããã¯å©çšã§ããŸãããã¡ãªã¿ã«ã倿°ã«å€ãæ ŒçŽããããšããä»£å ¥ããããšãããŸãã倿°ã®æŠå¿µã以äžã®å³ã«èšããŸãã
ããã°ã©ã ã¯ãåŠçãäžè¡äžè¡æžããŠããããšãç¹°ãè¿ããŠäœãããã®ã§ããããã¹ãŠãèªåã§æžãã®ã«ã¯éçããããŸããããšãã°ãã¡ã€ã«ã®å 容ãèªã¿èŸŒãåŠçãããããšããå Žåããã®åŠçã¯ã1 + 1ããšã¯æ ¹æ¬çã«éããŸããããããã¡ã€ã«ãéããŠããããèªã¿èŸŒã(readãã)ããšãã£ãåŠçãå¿ èŠãšãªããŸãããã®ãããªåŠçã¯ããã§ã«èª°ããäœã£ãåŠçããåŒã³åºãããšã§å®çŸããŸããå ·äœçã«ã¯ãããã¡ã€ã«ãéãåŠçããåŒã³åºãããã®åŸã§ããã¡ã€ã«ã®äžèº«ãèªãåŠçããåŒã³åºãã®ã§ãã
ãã¡ã€ã«ã®èªã¿åºãã ãšè©±ãé£ããã®ã§ããã£ãšç°¡åãªãæ°ã®çµ¶å¯Ÿå€ãåŸãããšããåŠçãå©çšããŠã¿ãŸãã
>>> abs(-5)
5
>>> value = abs(5)
>>> value
5
ãabs()ãã䜿ãããšã§-5ã®çµ¶å¯Ÿå€ã§ãã5ãåŸãŠããŸãããŸããã®æ¬¡ã«ã5ã®çµ¶å¯Ÿå€ã§ãã5ãåŸãŠããŸãã
ãã®abs()ã®ãããªã誰ããäœæããåŠçãã¯ã颿°(function)ããšåŒã°ããåœ¢ã§æäŸãããŠããŸããabsã颿°ã®ååã§()ã®äžã®æ°åã颿°ã«äžããå€ã§ããããã§ã¯ã颿°ãžã®å ¥åå€ãšããŠ-5ãäžããŠãåºåå€ãšããŠ5ãåŸãŠããŸããäŸã«ããããã«ã颿°ããè¿ãããå€ã倿°ã«æ ŒçŽããããšãã§ããŸãã
ãã®é¢æ°absã䜿ãããšã§ãèªåã§çµ¶å¯Ÿå€ãåŸãå ·äœçãªåŠçãæžããªããŠã絶察å€ãåŸãããšãã§ããŠããŸãã絶察å€ãåŸããããã®åŠçã§ãããèªåã§æžããŠãããã§ãããããå ã»ã©ã®ãã¡ã€ã«åŠçããããã¯ãŒã¯ã®å©çšãªã©ã¯ãããã颿°ã䜿ããªããšå®çŸäžå¯èœã§ãããªããabsã¯ãã䜿ãããåŠçãªã®ã§ãçµã¿èŸŒã¿é¢æ°ããšããããã«å©çšã§ããç¹å¥ãªé¢æ°ãšããŠæäŸãããŠããŸãã
次ã«ãå°æ°ç¹ã®åãæšãŠããããããšæããŸããå°æ°ç¹ã®åãæšãŠã颿°ãšããŠæäŸãããŠããŸããã絶察å€ãåŸãabsã»ã©ãã䜿ãããåŠçã§ã¯ãªãã®ã§ãçµã¿èŸŒã¿é¢æ°ããšããŠã¯æäŸãããŠããŸããããæšæºã©ã€ãã©ãªããšããç¹å®ã®åŠçãããããã®ããŒã«ã»ããã®ã²ãšã€ã®æ©èœãšããŠæäŸãããŠããŸãã
æšæºã©ã€ãã©ãªã¯ãã®ãªãã«ãç¹å®æ©èœãæ åœããã¢ãžã¥ãŒã«ãããã€ãæã£ãŠããŸããããšãã°ãæ°åŠé¢é£ã®ãmathã¢ãžã¥ãŒã«ãããOSã®æ©èœãå©çšããããã®ãosã¢ãžã¥ãŒã«ããªã©ããããŸããçµã¿èŸŒã¿é¢æ°ä»¥å€ã®ãã¢ãžã¥ãŒã«ã«å±ãã颿°ãã䜿ãå Žåã¯ããŸããâ¯â¯ãšããã¢ãžã¥ãŒã«ã䜿ããŸããããšãã宣èšãããå¿ èŠããããŸãã
åãæšãŠã¯ãæ°åŠãçã«å©çšãããæ©èœã§ãã®ã§ãä»åã¯mathã¢ãžã¥ãŒã«ã䜿ããŸããå ·äœçã«ã¯ä»¥äžã®ããã«ãªããŸãã
>>> import math
>>> math.floor(5.5)
5.0
ãmathã¢ãžã¥ãŒã«ãimportããŠäœ¿ããŸããããšå®£èšããããšã§ãmathã¢ãžã¥ãŒã«ã®floor颿°ãåŒã³åºããŠããŸããã¢ãžã¥ãŒã«ã«å±ãã颿°ã¯ãâã¢ãžã¥ãŒã«å.颿°()âãšããã¹ã¿ã€ã«ã§åŒã³åºãããšãã§ããŸãã5.5ãäžããŠ5.0ãåŸãŠããã®ã¯å ã»ã©ã®absãšåãã§ããã颿°åã®åã«ã¢ãžã¥ãŒã«åãã€ããŠãããšãããéããŸãããçµã¿èŸŒã¿é¢æ°ãšã¢ãžã¥ãŒã«ã®å©ç𿹿³ã以äžã«å³ç€ºããŸãã
ãªãmathã¢ãžã¥ãŒã«ã«ã¯ã»ãã®æ©èœããããfloorã¯ãã®ã²ãšã€ã«ãããŸãããåãæšãŠãããã®ã§ãããåãäžããåœç¶ãªãããããŸãã
ãŸããabsãfloorã®ããã«ãåŠçããçµæãè¿ã颿°ãã ãã§ãªãããçµæãè¿ããªã颿°ãããããŸããããšãã°ä»ãŸã§äœ¿ã£ãŠããprint颿°ã¯ãåãåã£ãæåãæ°åãç»é¢ã«åºåããããã®é¢æ°ã§ãããã®é¢æ°ãåŒã³åºãã®ã¯ãç»é¢ã«åºåããããããã§ãããäœãå€ãåŸãããšãç®çãšãããã®ã§ã¯ãããŸããã
>>> print('hello')
hello
>>> abc = 3
>>> print(abc)
3
äžã®ããã«å€æ°ã«äœãå ¥ã£ãŠããã確èªããçšéã«å©çšã§ããã®ã§ãããã°ã©ã ã®æåã確èªããã®ã«äŸ¿å©ã§ããprintã¯äžçªäœ¿ã颿°ãããããŸããã
ããã°ã©ã ã§ GUI ã«è¡šç€ºããããŠã¿ã
äžè¡äžè¡åœä»€ãæžãããšãšã誰ããäœã£ãåŠçãåŒã³åºãããšã§ããã°ã©ã ãäœããããšããããšã¯ããã£ãŠããã ããããšæããŸãããã ãç°¡åãªèšç®åŠçããããã ãã§ã¯ããã°ã©ãã³ã°ã§äœãå®çŸã§ããããããŸãã¡ã€ã¡ãŒãžãã€ãããŠããªããããããŸããããã®ãããããªãé§ãè¶³ãšãªã£ãŠããŸããŸããGUIã®ã¢ããªã±ãŒã·ã§ã³ãå®éã«äœã£ãŠã¿ãããšã§ãäžæ©å ã®ã¬ãã«ã§äœãäœããããã«ãªããããå®éã«å³ãã£ãŠããããããšæããŸãã
ãŸã以äžã®ããã°ã©ã ãã³ããã§çµæ§ã§ãã®ã§å®è¡ããŠã¿ãŠãã ãããè€æ°è¡ãããã³ããã«è²Œãä»ãããšç°å¢ã«ãã£ãŠã¯åããªããããããŸããã®ã§ãåå話ããããã«ãã¡ã€ã«ã«èšå ¥ããŠããå®è¡ããã»ãããããããããŸãããIDLEã®ãšãã£ã¿ã䜿ãã°ç°¡åã«ãã¡ã€ã«ã«ããã°ã©ã ã貌ãä»ããŠå®è¡ã§ããŸãããªããã³ãã³ãããã³ãããžã®è²Œãä»ãã¯ããŠã£ã³ããŠå·Šäžã®ã¢ã€ã³ã³ãã¯ãªãã¯ããŠããã以äžã®ããã«é²ããŸãã
import Tkinter
font=("Helevetica", 32, "bold")
label = Tkinter.Label(text="Hello Python", font=font, bg="red")
label.pack()
label.mainloop()
èµ·åãããšä»¥äžã®ãããªGUIã®ç»é¢ãã§ãŠããŸãããã
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ããã°ã©ã ã®å®è¡çµæ |
GUIãå©çšããææ³ã¯ããŸããŸã§ãããäžã®äŸã§ã¯ãTkinterããšåŒã°ããPythonãæäŸããŠããGUIã®ã¢ãžã¥ãŒã«ã䜿ã£ãŠããŸããmathã¢ãžã¥ãŒã«ãšåãããã«ãTkinterãimportãããTkinter.Labelããšãã颿°ã§GUIã®ããŒããäœããããã倿°labelã«æ ŒçŽããŠããŸãããã®éã«ãã©ã³ããèæ¯è²ãããã¹ãã«è¡šç€ºããæåãªã©ãæå®ããŠããŸãããå°ãè€éã§ãããåºæ¬çã«ã¯é¢æ°absã«-5ãäžã5ãåŸãŠããã®ãšå šãåãã§ãã
ãããŠããã®labelã«æ ŒçŽãããããŒãã«å¯ŸããŠããpack()ãmainloop()ãšããåŠçãããããšåœä»€ããããšã§ãå®éã«ç»é¢ã«GUIã®ããŒããç»é¢ã«è¡šç€ºãããŸãã
å®ã¯ãTkinter.Labelãšãã颿°ã¯Labelãšããã¯ã©ã¹ãã€ã³ã¹ã¿ã³ã¹åãããšããåŠçãå®è¡ããŠããã®ã§ããããã®æŠå¿µã¯å°ã ãããããã®ã§ã詳现ã¯é£èŒåŸåã§å®éã«ã¯ã©ã¹ãæ±ãåã«è²ããŸãããã ããã¯ã©ã¹ããäœãããããŒã¿ã«å¯ŸããŠãåœä»€ãããããšã§åŠçãå®è¡ãããããŒã¿ã®ç¶æ ãå€åãããããšããããšã¯èŠããŠãããŠããã£ãã»ãããããããããŸãããããããªããžã§ã¯ãæåã®åºæ¬çãªèãæ¹ã§ãã
颿°ãšã¢ã«ãŽãªãºã ãæžããŠã¿ã
ããã»ã©çµ¶å¯Ÿå€ãè¿ã颿°absã䜿ã£ãŠã¿ãŸãããããã®ãããªã颿°ããèªåã§äœãããšãå¯èœã§ããabsã®ããã«èª°ã«ã§ã䜿ãããåŠçã ãšããã§ã«æäŸãããŠããå¯èœæ§ãé«ãã®ã§ãããèªåã ãã䜿ããããªåŠçã ãšãèªåã§é¢æ°ãäœãå¿ èŠãã§ãŠããŸãã颿°ãèªåã§äœã第äžçªã®çç±ã¯ãããã°ã©ã ãæŽçãããããããŸããåãåŠçãäœåºŠãåŒã³åºããããã§ãã颿°äœæã®æ¹æ³ã¯å¿ é ã®ç¥èãªã®ã§ãç°¡åã«ç޹ä»ããŸããã
颿°äœæã®æå§ãã«âhelloâãšåºåããç°¡åãªé¢æ°ãprint_helloããäœã£ãŠã¿ãŸãã
def print_hello(): # 颿°ã®å®£èš
print('hello')
print_hello() # 颿°ã®å©çš
ãããå®è¡ãããšä»¥äžã®ããã«åºåãããŸãã
hello
defããå§ãŸã2è¡ã§é¢æ°ããå®çŸ©ãããŠããã®åŸã«ç¶ãprint_hello()ã§å®çŸ©ãã颿°ããåŒã³åºãããŠããŸããprint_hello()ã2ååŒã³åºãã°ãhelloã2ååºåãããŸããåœç¶ã§ããã颿°ãå®çŸ©ããã«é¢æ°ãåŒã³ã ãããšãããšããããªé¢æ°ãªããããšæãããŠããŸããŸãã以å䜿ã£ã颿°absãfloorã¯ãã§ã«å®çŸ©ãããŠããã®ã§ãèªåã§å®çŸ©ãããªããŠãåŒã³åºãããšãã§ããŸãã
次ã«print_helloããããå°ãè€éãªé¢æ°ãadd5ããäœã£ãŠã¿ãŸããååããããããšæããŸãããåãåã£ãæ°åã«5ãå ãããã®ãè¿ã颿°ã§ãã
def add5(x): # 颿°ã®å®£èš
y = x + 5
return y
z = add5(5) # 颿°ã®å©çš
print(z)
å ã»ã©ã®print_helloãšåãããã«ã颿°ã®å®çŸ©ãdefã§è¡ããadd5ãåŒã³åºãããšã§é¢æ°ãå©çšããŠããŸããããã ãdefã§å®çŸ©ããéã«add5ã®()ã®äžã«xãšãã倿°ãæžãããŠããŸãããããŠé¢æ°ã®å®çŸ©ã®æåŸã«returnãšããåœä»€ãå ããããŠããŸãã
ãã®xã¯é¢æ°ãåŒã³åºãéã«ãå€ãåãåããããšãæå³ããŠããŸããabsãå€ãåãåãã®ãšåãããã«ãadd5ãå€ãåãåãããããxã«æ ŒçŽãããã®ã§ãã ãããŠãã®xã«5ãå ããå€ãyã«æ ŒçŽãããããreturnã§é¢æ°ã®åŒã³åºãããšã«è¿ããŠããŸããabsã絶察å€ãè¿ãããã«ãadd5ã¯5ãå ããå€ãè¿ããŠããŸãã
ãªããããããããããããã«ãäžã®äŸã§ã¯åœä»€ãäžè¡ã«ã²ãšã€ããæžããŠããŸããããäžè¡ã«è€æ°ã®åœä»€ãæžãããšãå¯èœã§ããäžèšã®add5ã®äŸã§ã¯ã以äžã®ããã«ãªããŸãã
def add5(x):
return x + 5
print(add5(5))
æåŸã«absãšåãåãããã颿°ãmy_absããäœã£ãŠã¿ãŸãããŸã絶察å€ãåŸãã«ã¯ã©ãããæé ã§å®çŸããããèããŠã¿ãŸãããã
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äžèšã®å³ãåèã«ããŠã颿°my_absãæžããŠã¿ãŸãã
def my_abs(x):
if(x>0):
return x
else:
return x * -1
print(my_abs(-6))
å ã»ã©ã®print_helloãadd5ãããè€éã«ãªã£ãŠããŸãããæåã®5è¡ã§é¢æ°ã®å®çŸ©ãããŠãåŸåã§å®çŸ©ãã颿°ãåŒã³åºããŠããã®ã¯åãã§ãã-6ãšããæ°åãmy_abs颿°ã«æž¡ããŠãè¿ããã絶察å€ãprint颿°ã§ç»é¢ã«åºåããŠããŸãã
颿°my_absã®äžã®åããèŠãŠã¿ãŸããããmy_abs(x)ã®xã¯ãåŒã³åºãããšã§æž¡ãããå€ãæ ŒçŽããŠããŸããä»åã¯-6ã«ãªããŸãã
ãã®æ¬¡ã«ãxã0以äžãªãAããããããã§ãªããªãBãããããšããåŠçãããŸãããããããif elseãã®æã§ããifã®åŸãã®()ã®äžã®æ¡ä»¶ãx>0ããæºãããããªããreturn xãæºããããªããªãelseã®åŸã®åŠçã§ããreturn x * -1ãå®è¡ãããŸãã
ã€ãŸãx>0ã®ãšãã¯xããã®ãŸãŸè¿ããŠãx>0ã§ãªããšãã¯-1ããããŠè² æ°ãæ£æ°ã«ããããã§å€ã颿°ã®åŒã³åºãããšã«è¿ããšããããšã§ãããããã§æ£æ°ã§ããããšè² æ°ã§ããããšãåžžã«çµ¶å¯Ÿå€ãè¿ãããããšãããããŸãã
ifã®ãããªãæ¡ä»¶åå²ãããç¹å®ã®åŠçãç¹°ãè¿ããã«ãŒãããšåŒã°ãããã®ãçµã¿åãããããšã§ãããã°ã©ã ã®åããããè€éã«ããããšãã§ãããç¹å®ã®æ©èœãå®çŸããããã®ã«ãŒã«ããå®çŸãããŸãããã®ã«ãŒã«ã®ããšããã¢ã«ãŽãªãºã ããšåŒã³ãŸãã
GUIã§ã«ãŠã³ã¿ãŒã®ã¢ããªã±ãŒã·ã§ã³ãäœã£ãŠã¿ã
æåŸã«GUIã®ã«ãŠã³ã¿ãŒã®ã¢ããªã±ãŒã·ã§ã³ãæžããŠã¿ãŸããããã¢ããªã±ãŒã·ã§ã³ãšããŠã¯éåžžã«åçŽãªãã®ã§ããã¿ã³ãã¯ãªãã¯ãããåæ°ãã衚瀺ããã ãã®ãã®ã§ãã以äžã®ããã°ã©ã ãå®è¡ããŠã¿ãŠãã ããã
import Tkinter
counter = 0
font = ("Helevetica", 32, "bold")
button = Tkinter.Button(font=font, text=str(counter))
def clicked():
global counter, button
counter = counter + 1
button.config(text=str(counter))
button.config(command=clicked)
button.pack()
button.mainloop()
以äžã®ãããªç»é¢ãç«ã¡äžãããã¯ãªãã¯ãããšè¡šç€ºãããæ°ãå¢ããããšãããããšæããŸãã
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