1. Pythonãšã¯
Pythonã¯ãçŸä»£ã®ããã°ã©ãã³ã°èšèªã®äžã§éåžžã«äººæ°ããããå€ãã®åéã§å©çšãããŠããŸãããã®çç±ãšããŠãPythonã®ç¬ç¹ãªç¹åŸŽãèæ¯ãããŸããŸãªçšéãæããããŸãã
1.1. Pythonã®ç¹åŸŽ
Pythonã¯ãã·ã³ãã«ã§èªã¿ãããæ§æãç¹åŸŽã§ãããã®æ§æã®ãããã§ãåå¿è ã§ãçæéã§ããã°ã©ãã³ã°ã®åºæ¬ãæŽãããšãã§ããŸãããŸããPythonã¯æ±çšæ§ãé«ããWebéçºããããŒã¿åæãAIéçºãŸã§å¹ åºãåéã§ã®å©çšãå¯èœã§ããããã«ãè±å¯ãªã©ã€ãã©ãªãšãã¬ãŒã ã¯ãŒã¯ãæäŸãããŠãããããç¹å®ã®ã¿ã¹ã¯ãå¹ççã«å®è¡ããããšãã§ããŸãã
1.2. Pythonã®æŽå²ãšèæ¯
Pythonã¯ã1991幎ã«ã®ãã»ãŽã¡ã³ãããµã ã«ãã£ãŠéçºãããŸããã圌ã®ç®çã¯ãèªã¿ããããçãã³ãŒãã§å¹æçãªããã°ã©ã ãæžãããšãã§ããèšèªãäœæããããšã§ããããã®çµæãPythonã¯ãã³ãŒãã¯èªãæéãæžãæéãããé·ãããšããå²åŠã®ããšãã·ã³ãã«ã§èªã¿ãããã³ãŒããéèŠããèšèªãšããŠèšèšãããŸããããã®å²åŠã¯ãä»æ¥ã®Pythonã³ãã¥ããã£ã«ãåŒãç¶ãããŠããŸãã
1.3. Pythonã®çšé
Pythonã¯ããã®æ±çšæ§ã®é«ãããããŸããŸãªåéã§å©çšãããŠããŸããWebéçºã§ã¯ãFlaskãDjangoã®ãããªãã¬ãŒã ã¯ãŒã¯ã䜿çšããŠãå¹ççãªWebã¢ããªã±ãŒã·ã§ã³ãäœæããããšãã§ããŸããããŒã¿åæã®åéã§ã¯ãPandasãNumPyã®ãããªã©ã€ãã©ãªã䜿çšããŠã倧éã®ããŒã¿ãå¹ççã«åŠçããããšãã§ããŸãããŸããAIãæ©æ¢°åŠç¿ã®åéã§ã¯ãTensorFlowãPyTorchã®ãããªãã¬ãŒã ã¯ãŒã¯ã䜿çšããŠãé«åºŠãªã¢ãã«ãéçºããããšãã§ããŸãã
2. Pythonã®åºæ¬æ§é
Pythonã¯ããã®ã·ã³ãã«ããšåŒ·åãããå€ãã®äººã ã«æãããŠããŸãããã®ã»ã¯ã·ã§ã³ã§ã¯ãPythonã®åºæ¬çãªæ§é ã«ã€ããŠè©³ãã解説ããŸãã
2.1. ææ³ã®åºç€
Pythonã®ææ³ã¯ãä»ã®å€ãã®ããã°ã©ãã³ã°èšèªãšã¯ç°ãªããã€ã³ãã³ãã«ãã£ãŠã³ãŒããããã¯ãåºå¥ããŸããããã«ãããã³ãŒããèªã¿ããããæŽçããã圢ã«ãªããŸãããŸããPythonã§ã¯ã»ãã³ãã³ãæ¬åŒ§ã䜿çšããå¿ èŠããªãããããPythonã®ã³ãŒããã·ã³ãã«ã§ããçç±ã®äžã€ã§ãã
2.2. å€æ°ãšããŒã¿å
Pythonã§ã¯ãå€æ°ã®å®£èšãããŒã¿åã®æå®ãéåžžã«ç°¡åã§ããå€æ°ã¯å€ãæ ŒçŽããããã®ãç®±ããšèããããšãã§ãããã®ãç®±ãã«ã¯æ§ã ãªçš®é¡ã®ããŒã¿ãæ ŒçŽããããšãã§ããŸããPythonã«ã¯ãæŽæ°åãæµ®åå°æ°ç¹åãæåååããªã¹ãåãªã©ãå€ãã®ããŒã¿åãçšæãããŠããŸãã
2.3. åºæ¬çãªæŒç®åãšãã®äœ¿çšäŸ
Pythonã«ã¯ãæ°åŠçãªèšç®ãããŒã¿ã®æäœãè¡ãããã®å€ãã®æŒç®åãçšæãããŠããŸããäŸãã°ã+ã–ã¯æ°å€ã®å ç®ãæžç®ãè¡ãã*ã/ã¯ä¹ç®ãé€ç®ãè¡ããŸãããŸããæååã®çµåããªã¹ãã®èŠçŽ ã®ååŸãªã©ãããŒã¿åã«å¿ããŠæŒç®åã®æ¯ãèããç°ãªãããšããããŸããããã«ãããPythonã§ã¯æ§ã ãªæäœãç°¡åã«è¡ãããšãã§ããŸãã
3. Pythonã§ã®ããã°ã©ãã³ã°ã®åºæ¬
PythonãåŠã¶éãããã°ã©ãã³ã°ã®åºæ¬çãªæŠå¿µãç解ããããšã¯éåžžã«éèŠã§ãããã®ã»ã¯ã·ã§ã³ã§ã¯ãPythonã§ã®å¶åŸ¡æ§é ãé¢æ°ã®äœ¿çšæ¹æ³ããããŠããŒã¿æ§é ã®æäœã«ã€ããŠè©³ãã解説ããŸãã
3.1. å¶åŸ¡æ§é ïŒæ¡ä»¶åå²ãšã«ãŒã
å¶åŸ¡æ§é ã¯ãããã°ã©ã ã®æµããå¶åŸ¡ããããã®ãã®ã§ããPythonã§ã¯ãifæã䜿çšããŠæ¡ä»¶åå²ãè¡ããforãwhileã䜿çšããŠã«ãŒãåŠçãè¡ããŸããäŸãã°ãç¹å®ã®æ¡ä»¶ãæºããããå Žåã«ã ãåŠçãè¡ãããå ŽåããåãåŠçãç¹°ãè¿ãè¡ãããå Žåã«ããããã®å¶åŸ¡æ§é ã䜿çšããŸãã
3.2. é¢æ°ãšæç¶ã
é¢æ°ã¯ãç¹å®ã®åŠçããŸãšãããã®ã§ãäœåºŠãåãåŠçãè¡ãå ŽåããåŠçãã¢ãžã¥ãŒã«åããŠåå©çšããå Žåã«äœ¿çšããŸããPythonã§ã¯ãdefããŒã¯ãŒãã䜿çšããŠé¢æ°ãå®çŸ©ããŸãããŸããé¢æ°ã¯åŒæ°ãåãããšãã§ããããã«ããæè»ãªåŠçãå¯èœãšãªããŸãã
3.3. ãªã¹ããšèŸæžã®æäœ
Pythonã«ã¯ãããŒã¿ãæ ŒçŽããããã®æ§ã ãªããŒã¿æ§é ãçšæãããŠããŸããäžã§ãããªã¹ããšèŸæžã¯éåžžã«äŸ¿å©ã§ãé »ç¹ã«äœ¿çšãããŸãããªã¹ãã¯ãè€æ°ã®ããŒã¿ãé åºä»ããŠæ ŒçŽããããã®ãã®ã§ãèŸæžã¯ããŒãšå€ã®ãã¢ãæ ŒçŽããããã®ãã®ã§ãããããã®ããŒã¿æ§é ãå¹æçã«äœ¿çšããããšã§ãããŒã¿ã®æäœãåŠçãéåžžã«ç°¡åã«ãªããŸãã
4. Pythonã®å®çšäŸ
Pythonã¯ãã®æ±çšæ§ãããããŸããŸãªåéã§ã®å®çšäŸãååšããŸãããã®ã»ã¯ã·ã§ã³ã§ã¯ãPythonã䜿çšãããã¡ã€ã«æäœãããŒã¿ããŒã¹ã®å©çšããããŠãŠã§ãã¢ããªã±ãŒã·ã§ã³ã®éçºã«ã€ããŠè©³ãã解説ããŸãã
4.1. ãã¡ã€ã«æäœ
Pythonã¯ããã¡ã€ã«ã®èªã¿æžããç°¡åã«è¡ãããšãã§ããæ©èœãæã£ãŠããŸããããã¹ããã¡ã€ã«ãCSVãã¡ã€ã«ã®æäœã¯ãã¡ãããç»åãé³å£°ãªã©ã®ãã€ããªãã¡ã€ã«ã®æäœããµããŒãããŠããŸããç¹ã«ãopen
é¢æ°ã䜿çšããããšã§ããã¡ã€ã«ãéããããèªã¿æžãã®ã¢ãŒããæå®ããŠæäœããããšãã§ããŸãã
4.2. ããŒã¿ããŒã¹ã®å©çš
ããŒã¿ããŒã¹ã¯ã倧éã®ããŒã¿ãå¹ççã«ç®¡çããããã®ã·ã¹ãã ã§ããPythonã¯ãSQLiteãMySQLãPostgreSQLãªã©ã®å€ãã®ããŒã¿ããŒã¹ã·ã¹ãã ãšé£æºããããšãã§ããŸããç¹ã«ãSQLAlchemy
ãDjango ORM
ã®ãããªã©ã€ãã©ãªã䜿çšããããšã§ãããŒã¿ããŒã¹ã®æäœãããç°¡åã«è¡ãããšãã§ããŸãã
4.3. ãŠã§ãã¢ããªã±ãŒã·ã§ã³ã®éçº
ãŠã§ãã¢ããªã±ãŒã·ã§ã³ã¯ãã€ã³ã¿ãŒããããä»ããŠå©çšããã¢ããªã±ãŒã·ã§ã³ã®ããšãæããŸããPythonã¯ãFlaskãDjangoã®ãããªãã¬ãŒã ã¯ãŒã¯ã䜿çšããŠããŠã§ãã¢ããªã±ãŒã·ã§ã³ã®éçºãè¡ãããšãã§ããŸãããããã®ãã¬ãŒã ã¯ãŒã¯ã¯ããŠã§ãããŒãžã®è¡šç€ºãããŒã¿ããŒã¹ã®æäœããŠãŒã¶ãŒèªèšŒãªã©ã®æ©èœãæäŸããŠãããå¹ççãªãŠã§ãã¢ããªã±ãŒã·ã§ã³ã®éçºãå¯èœã§ãã
5. Pythonã®å¿çš
Pythonã®åºæ¬çãªæ©èœãç解ãããã次ã¯ããé«åºŠãªå¿çšæè¡ã«ææŠããæã§ãããã®ã»ã¯ã·ã§ã³ã§ã¯ãPythonã®ã¢ãžã¥ãŒã«ãã©ã€ãã©ãªã®å©çšãäŸå€åŠçããããŠé«åºŠãªããŒã¿æ§é ã«ã€ããŠè©³ãã解説ããŸãã
5.1. ã¢ãžã¥ãŒã«ãšã©ã€ãã©ãª
Pythonã®åŒ·åãªç¹åŸŽã®äžã€ã¯ãè±å¯ãªã¢ãžã¥ãŒã«ãšã©ã€ãã©ãªãå©çšã§ããããšã§ããã¢ãžã¥ãŒã«ã¯ãé¢é£ããé¢æ°ãã¯ã©ã¹ããŸãšãããã®ã§ãåå©çšãå ±æã容æã§ããäžæ¹ãã©ã€ãã©ãªã¯ãç¹å®ã®ã¿ã¹ã¯ãå¹ççã«è¡ãããã®ã¢ãžã¥ãŒã«ã®éåã§ããPythonã®æšæºã©ã€ãã©ãªã«ã¯ããã¡ã€ã«æäœãæ°åŠçèšç®ããããã¯ãŒã¯éä¿¡ãªã©ãå€å²ã«ãããæ©èœãå«ãŸããŠããŸãã
5.2. äŸå€åŠç
ããã°ã©ã ã®å®è¡äžã«äºæããªããšã©ãŒãçºçããããšããããŸãããã®ãããªãšã©ãŒãå¹æçã«åŠçããããã«ãPythonã§ã¯äŸå€åŠçãæäŸããŠããŸããå
·äœçã«ã¯ãtry
ãšexcept
ã䜿çšããŠããšã©ãŒãçºçããå Žåã®åŠçãå®çŸ©ããããšãã§ããŸããããã«ãããããã°ã©ã ãçªç¶çµäºããããšãªããé©åãªãšã©ãŒã¡ãã»ãŒãžã衚瀺ãããªã©ã®å¯Ÿå¿ãå¯èœãšãªããŸãã
5.3. é«åºŠãªããŒã¿æ§é
Pythonã«ã¯ããªã¹ããèŸæžã®ä»ã«ããã¿ãã«ãã»ãããªã©ã®é«åºŠãªããŒã¿æ§é ãçšæãããŠããŸããã¿ãã«ã¯ãå€æŽäžå¯èœãªãªã¹ãã®ãããªãã®ã§ãã»ããã¯éè€ããèŠçŽ ãæããªãã³ã¬ã¯ã·ã§ã³ã§ãããããã®ããŒã¿æ§é ãé©åã«äœ¿çšããããšã§ãããŒã¿ã®ç®¡çãæäœãããå¹ççã«è¡ãããšãã§ããŸãã
6. Pythonã®åŠç¿ãªãœãŒã¹
PythonãåŠã¶éã«ã¯ãè¯è³ªãªåŠç¿ãªãœãŒã¹ãç¥ã£ãŠããããšãéåžžã«æå¹ã§ãããã®ã»ã¯ã·ã§ã³ã§ã¯ãPythonåŠç¿ã®ããã®ããããã®æžç±ããŠã§ããµã€ããå®è·µçãªãããžã§ã¯ãã®ã¢ã€ãã£ã¢ããããŠPythonã³ãã¥ããã£ã«ã€ããŠè©³ãã解説ããŸãã
6.1. ããããã®æžç±ãšãŠã§ããµã€ã
Pythonã«é¢ããæžç±ã¯æ°å€ãåºçãããŠãããåå¿è ããäžçŽè ãŸã§å¹ åºãå 容ãæã£ãŠããŸããç¹ã«ã”Pythonã¯ãã¯ãã㯓ã”Pythonãšãã»ã³ã·ã£ã«ãªãã¡ã¬ã³ã¹“ã¯ãå®è·µçãªå 容ãè©°ãŸã£ãŠãããå€ãã®Pythonéçºè ã«æ¯æãããŠããŸãããŸãããŠã§ãäžã«ãå€ãã®ãã¥ãŒããªã¢ã«ãããã¥ã¡ã³ããååšããPythonå ¬åŒããã¥ã¡ã³ããReal Pythonãªã©ã®ãµã€ãã¯ãåå¿è ããäžçŽè ãŸã§å¹ åºãæ å ±ãæäŸããŠããŸãã
6.2. å®è·µçãªãããžã§ã¯ãã®ã¢ã€ãã£ã¢
Pythonã®åŠç¿ãæ·±ããããã«ã¯ãå®éã«ãããžã§ã¯ããæãããããšãéåžžã«æå¹ã§ããäŸãã°ããŠã§ãã¹ã¯ã¬ã€ãã³ã°ãå©çšããŠèªåã®èå³ã®ããããŒã¿ãåéããããFlaskãDjangoã䜿çšããŠãŠã§ãã¢ããªã±ãŒã·ã§ã³ãéçºããããšãªã©ãèããããŸãããŸããããŒã¿è§£æãæ©æ¢°åŠç¿ã®ãããžã§ã¯ãããPythonã®åŒ·åãªã©ã€ãã©ãªã掻çšããŠåãçµãããšãã§ããŸãã
6.3. ã³ãã¥ããã£ãšãµããŒã
Pythonã¯ãäžçäžã«åºãã倧ããªã³ãã¥ããã£ãæã£ãŠããŸãããã®ã³ãã¥ããã£ã§ã¯ãPythonã®å匷äŒãã«ã³ãã¡ã¬ã³ã¹ãé »ç¹ã«éå¬ãããŠãããåå¿è ããäžçŽè ãŸã§ãæ å ±äº€æãåŠã³ã®å Žãæã£ãŠããŸãããŸãããªã³ã©ã€ã³äžã®ãã©ãŒã©ã ããã£ããã°ã«ãŒãã掻çºã§ãçåãåé¡ã«å¯ŸãããµããŒããåããããšãã§ããŸãã
7. ãŸãšã
ãã®èšäºãéããŠãPythonã®åºæ¬ããå¿çšãŸã§ã®å€å²ã«ãããæ å ±ãåŠã¶ããšãã§ããŸãããæåŸã«ãPythonã®åŒ·ã¿ãšåŒ±ã¿ãä»åŸã®å±æããããŠç¶ç¶çãªåŠç¿ã®éèŠæ§ã«ã€ããŠãŸãšããŠã¿ãŸãããã
7.1. Pythonã®åŒ·ã¿ãšåŒ±ã¿
Pythonã®æ倧ã®åŒ·ã¿ã¯ããã®èªã¿ããããšæžããããã«ãããŸããããã«ãããåå¿è ã§ãçæéã§ããã°ã©ãã³ã°ã®åºæ¬ãæŽãããšãã§ããŸãããŸããè±å¯ãªã©ã€ãã©ãªãšã¢ãžã¥ãŒã«ãå©çšå¯èœã§ãããããæ§ã ãªã¿ã¹ã¯ãå¹ççã«å®è¡ããããšãã§ããŸããäžæ¹ã匱ã¿ãšããŠã¯ãäžéšã®é«æ§èœãèŠæ±ãããã¢ããªã±ãŒã·ã§ã³ã«ã¯åããªãããšãããã«ãã¹ã¬ããã®åŠçãé£ããç¹ãæããããŸãã
7.2. ä»åŸã®Pythonã®å±æ
Pythonã¯çŸåšãããŒã¿ãµã€ãšã³ã¹ãæ©æ¢°åŠç¿ããŠã§ãéçºãªã©ã®åéã§åºãå©çšãããŠããŸãããã®ååã¯ä»åŸãç¶ããšäºæ³ãããPythonã®ã³ãã¥ããã£ãæ¥ã æé·ããŠããŸããç¹ã«ãæ©æ¢°åŠç¿ãAIé¢é£ã®ã©ã€ãã©ãªãå å®ããŠããŠãããä»åŸã®æè¡é©æ°ã®äžå¿ãšããŠã®åœ¹å²ãæåŸ ãããŠããŸãã
7.3. ç¶ç¶çãªåŠç¿ã®éèŠæ§
æè¡ã®é²åã¯æ¥ã é²è¡ããŠãããæ°ããã©ã€ãã©ãªããã¬ãŒã ã¯ãŒã¯ã次ã ãšç»å ŽããŠããŸãããã®ãããç¶ç¶çãªåŠç¿ã¯éåžžã«éèŠã§ããPythonãåŠã¶éçšã§åŸãç¥èãã¹ãã«ãç¶æã»åäžãããããã«ã¯ãæ¥åžžçãªå®è·µãæ°ããæ å ±ã®ãã£ããã¢ãããæ¬ ãããŸããã