1. Pythonã©ã€ãã©ãªãšã¯ïŒ
Pythonã©ã€ãã©ãªãšã¯ãããã°ã©ãã³ã°èšèªPythonã§çšæãããé¢æ°ãã¯ã©ã¹ãªã©ãéããã¢ãžã¥ãŒã«çŸ€ã®ããšãæããŸãã
ãããã¯ãéçºè ãããã°ã©ã ãäœæããäžã§äŸ¿å©ãªæ©èœãæäŸããŸãã
ã©ã€ãã©ãªãããŸãå©çšããããšã§äœæ¥ã®å¹çåãã³ãŒãã®åããããããåäžããã®ã§ãPythonéçºè ã«ãšã£ãŠéåžžã«éèŠãªååšãšãªã£ãŠããŸãã
1.1 ã©ã€ãã©ãªã®å®çŸ©
ã©ã€ãã©ãªã¯ããããããçµã¿èŸŒãŸããŠããé¢æ°ãã¯ã©ã¹ãªã©ã®éåäœã§ããããããç¹å®ã®ç®çãæããããã®æ©èœãæäŸããŸãã
Pythonã©ã€ãã©ãªã¯Pythonããã°ã©ã ã®åŠçãè£å©ããããã«å©çšãããŸãããããã掻çšããããšã§ãæéã®ãããåŠçãçç¥ããããããå¹ççã«ã³ãŒããæžãããšãå¯èœã«ãªããŸãã
Pythonã©ã€ãã©ãªã¯å€æ°ååšãããããããç°ãªãç®çãæ©èœãæã€ãããé©åãªã©ã€ãã©ãªãéžæããããšãéèŠã§ãã
1.2 Pythonã©ã€ãã©ãªã®ç¹åŸŽ
Pythonã©ã€ãã©ãªã«ã¯ãç¹ã«åŒ·åãªç¹åŸŽããããŸããããã¯ããã®æ°ãéåžžã«å€ãããŸããã®è³ªã極ããŠé«ããšããããšã§ãã
Pythonã®ã©ã€ãã©ãªã¯éåžžã«æ¡åŒµæ§ãé«ããããŒã¿åæãæ©æ¢°åŠç¿ãªã©å€æ§ãªé åã§äœ¿çšãå¯èœã§ãã
ãŸããPythonã©ã€ãã©ãªã®å€ãã¯ãªãŒãã³ãœãŒã¹ã§æäŸãããŠãããåžžã«ãã®ããŒãžã§ã³ãã¢ããããŒããããŠããŸãã
1.3 Pythonã©ã€ãã©ãªã®å©çšæ¹æ³
Pythonã©ã€ãã©ãªã®å©çšã¯ãimportã䜿çšããŠè¡ããŸããäŸãã°ãçŸéºãªã°ã©ããæãããã«ãã䜿çšãããmatplotlibã©ã€ãã©ãªã¯ããimport matplotlib.pyplot as pltããšæžãããšã§äœ¿çšå¯èœã«ãªããŸãã
åŸããæ©èœãããã©ã€ãã©ãªãååšããã°ããããimportããã ãã§æ°ããªæ©èœãæã«å ¥ããããšãã§ãããããã®ã©ã€ãã©ãªãPythonã®åŒ·åãªæ¯æŽããŒã«ãšãªã£ãŠããŸãã
ãŸããPythonã©ã€ãã©ãªã¯ããªãŒãã³ãœãŒã¹ãœãããŠã§ã¢ã®ããã±ãŒãžç®¡çã·ã¹ãã ã§ãããpipããçšããŠç°¡åã«ã€ã³ã¹ããŒã«ããããšãå¯èœã§ãã
1.4 éèŠãªPythonã©ã€ãã©ãªã®çš®é¡
Pythonã«ã¯å€æ°ã®ã©ã€ãã©ãªããããŸããããã®äžã§ãç¹ã«éèŠãšãããã©ã€ãã©ãªãããã€ãååšããŸãã
äŸãã°ããNumPyãã¯å€§èŠæš¡ãªæ°å€èšç®ãå©ãããPandasãã¯ããŒã¿åæãå©ãããMatplotlibãã¯ããŒã¿ã®å¯èŠåãå©ããããã®ã©ã€ãã©ãªãšããŠåºã䜿çšãããŠããŸãã
ãããã®ã©ã€ãã©ãªãå·§ã¿ã«æãããšã§ãPythonã®å¯èœæ§ã¯äžå±€åºããã§ãããã
2. ããŒã¿è§£æã«äœ¿ãPythonã©ã€ãã©ãª
2.1 NumPyã®çŽ¹ä»ãšç¹åŸŽ
Pythonã®ã©ã€ãã©ãªãšããŠæåã«çŽ¹ä»ããã®ã¯ãNumPyã§ããNumPyã¯ãNumeric Pythonãã®ç¥ã§ããã®åã®éãæ°å€èšç®ãå¹ççã«è¡ãããã®ã©ã€ãã©ãªã§ããç¹ã«å€æ¬¡å é åãæ±ãããã®æ©èœãå å®ããŠããŸãã
NumPyã®ç¹åŸŽã®äžã€ã«ãè±å¯ãªæ°åŠé¢æ°ãåãã£ãŠããç¹ãæããããŸããããã«ãããè¡åèšç®ãçµ±èšåŠçãããŒãªãšå€æãªã©ãå¹ççã«å®è¡ã§ããŸãããŸããCèšèªãšé£æºããŠåäœãããããé«éãªèšç®ãå®çŸããŠããŸãã
ããã«ãNumPyã¯Pythonã®ä»ã®ç§åŠèšç®ã©ã€ãã©ãªãšã®äºææ§ãé«ãã§ããPandasãMatplotlibãªã©ã®ã©ã€ãã©ãªãšçµã¿åãããŠçšããããšã§ãããé«åºŠãªããŒã¿åŠçã»è§£æãå¯èœã«ãªããŸãã
2.2 Pandasã®çŽ¹ä»ãšç¹åŸŽ
次ã«çŽ¹ä»ããPythonã©ã€ãã©ãªã¯Pandasã§ããPandasã¯ããŒã¿ãã¬ãŒã ãšãã圢åŒã§ããŒã¿ãæ±ãããã倧éã®ããŒã¿ãå¹ççã«æäœã»åæããããšãå¯èœã§ãã
Pandasã®ç¹åŸŽãšããŠã¯ãCSVãExcelãšãã£ããã¡ã€ã«åœ¢åŒãç°¡åã«èªã¿èŸŒãããšãã§ããç¹ããŸãè€éãªããŒã¿æäœã容æã«è¡ããç¹ãæããããŸããããã«ãããããŒã¿ã®ã¯ã¬ã³ãžã³ã°ãäºååŠçãæ軜ã«å®è¡ã§ããŸãã
ãã®ä»ã«ããNumPyã©ã€ãã©ãªãšã®é«ãäºææ§ãæããŠãããNumPyã®æ©èœã掻çšããèšç®åŠçãªã©ãã¹ã ãŒãºã«è¡ãããšãã§ããŸãã
2.3 Matplotlibã®çŽ¹ä»ãšç¹åŸŽ
Pythonã§ã°ã©ãæç»ãè¡ãããã®ä»£è¡šçãªã©ã€ãã©ãªã®äžã€ã«MatplotlibããããŸããMatplotlibã®å€§ããªç¹åŸŽãšããŠãæ§ã ãªçš®é¡ã®å³ãæãããšãã§ããç¹ããããŸãã
Matplotlibã§ã¯ãæãç·ã°ã©ããæ£åžå³ããã¹ãã°ã©ã ãªã©æšæºçãªå³ã ãã§ãªãã3Dã°ã©ããã¢ãã¡ãŒã·ã§ã³ãªã©ã®é«åºŠãªå³ãæãããšãã§ããŸãããŸããå³ã®è£ 食ã«ã€ããŠã现ããèšå®å¯èœã§ãè³æäœæãªã©ã«æŽ»ãããŸãã
ããã«ãPandasãNumPyãšè¯å¥œã«é£æºããããããããã®ã©ã€ãã©ãªã§åŠçããããŒã¿ãçŽæ¥ã°ã©ãåããããšãå¯èœã§ãã
2.4 SciPyã®çŽ¹ä»ãšç¹åŸŽ
æåŸã«çŽ¹ä»ããPythonã®ã©ã€ãã©ãªã¯SciPyã§ããç§åŠèšç®ãç®çãšãããã®ã©ã€ãã©ãªã¯ãæ°å€ç©åãæé©åèšç®ãç·åœ¢ä»£æ°ãçµ±èšãªã©ã®é«åºŠãªèšç®ãå®è¡å¯èœã§ãã
SciPyã®ç¹åŸŽãšããŠã¯ãäžèšã®ãããªé«åºŠãªç§åŠæè¡èšç®ãå¯èœãªã ãã§ãªããNumPyãšå¯æ¥ã«é£æºããŠããç¹ããããŸããããã«ãããNumPyã§æäŸãããå€æ¬¡å é åã«å¯Ÿããæäœãåºã«ãããé²ãã æ°åŠçåæãè¡ãããšãå¯èœã§ãã
ãŸããSciPyã¯Pythonã®ä»ã®ããŒã¿è§£æã©ã€ãã©ãªãšãé«ã芪åæ§ãæã€ãããä»ã®ã©ã€ãã©ãªãšçµã¿åãããŠäœ¿ãããšã§ãããŒã¿ã®è§£æãèŠèŠåãæ軜ã«è¡ããŸãã
3. æ©æ¢°åŠç¿ã«äœ¿ãPythonã©ã€ãã©ãª
ãã®é ã§ã¯ãæ©æ¢°åŠç¿ã«æé©ãªPythonã©ã€ãã©ãªã«é¢ããŠã玹ä»ããŸããäžçäžã®ãšã³ãžãã¢ãã¡ã䜿ã£ãŠãããã®ã©ã€ãã©ãªã«ã€ããŠãããªãã«ãç解ããããšã§ãPythonã®åãæ倧éã«åŒãåºã糞å£ãèŠã€ããããšãã§ããã®ã§ã¯ãªãã§ããããã
åãäžããPython ã©ã€ãã©ãªã¯ãscikit-learnãTensorFlowãPyTorchãKerasã§ãããããã¯å šãŠæ©æ¢°åŠç¿ãè¡ãããã®ã©ã€ãã©ãªã§ãããååŠè ããäžçŽè ãŸã§åºãå©çšãããŠããŸãã
ããããã®ã©ã€ãã©ãªã«ã¯ç¹æ§ãããã®ã§ãçšéãçµéšã«å¿ããŠéžãã§ãã ããã
3.1 scikit-learnã®çŽ¹ä»ãšç¹åŸŽ
æåã«ã玹ä»ããã®ã¯ãscikit-learnã§ããååŠè ã«ãšã£ãŠåŠã³ãããããã€åŒ·åãªã©ã€ãã©ãªã§ãè±å¯ãªã¢ã«ãŽãªãºã ãæã£ãŠãããããŒã¿åæã«ã䜿çšãããŸãã
ãã®ã©ã€ãã©ãªã®ç¹åŸŽãšããŠãæ©æ¢°åŠç¿ã®ãããã¯ãç¶²çŸ ããŠããç¹ãšãã·ã³ãã«ãªAPIãããŸããŸãªæšæºã¢ã«ãŽãªãºã ã®è±å¯ãçãæããããŸãããŸããscikit-learnã¯Pythonã®çµ±èšåæã©ã€ãã©ãªãPandasãNumPyãšã®äºææ§ãé«ããäžç·ã«äœ¿ãããããšãå€ãã®ãç¹åŸŽã§ãã
å šãŠPythonã§æžãããŠãããé«ãèªç±åºŠãšäœ¿ãããããå ŒãåããŠããŸãããã詳ããæ å ±ã¯å ¬åŒããã¥ã¡ã³ããåç §ããŠãã ããã
3.2 TensorFlowã®çŽ¹ä»ãšç¹åŸŽ
次ã«çŽ¹ä»ããã©ã€ãã©ãªã¯ãGoogleãéçºããŠããTensorFlowã§ãããã£ãŒãã©ãŒãã³ã°ãå§ããšããå€ãã®æ©æ¢°åŠç¿ã¢ã«ãŽãªãºã ããµããŒãããŠããŸããTensorFlowã¯éåžžã«æè»æ§ãé«ããæ°ããªã¢ãã«ã®å®è£ ãæ¢åã¢ãã«ã®æ¹åã容æãªã®ãç¹é·ã§ãã
TensorFlowã¯äžŠåååŠçããµããŒãããŠãããããé«éãªèšç®ãå®çŸããŸããããã«ãã倧èŠæš¡ãªããŒã¿ã»ãããæ±ãéã®èšç®æéã®ççž®ãå¯èœãšãªããŸãã
ãŸããTensorFlowã¯Googleãéçºããããšããæ¡åŒµæ§ãé«ããCloudäžã§ã¹ã±ãŒã«ããããšãå¯èœã§ããå€ãã®éçºè ã«ãšã£ãŠéåžžã«äŸ¿å©ãªã©ã€ãã©ãªã§ãã
3.3 PyTorchã®çŽ¹ä»ãšç¹åŸŽ
ç¶ããŠã玹ä»ããã®ã¯ãFacebookãéçºããPythonã©ã€ãã©ãªPyTorchã§ããPyTorchã¯ãã£ãŒãã©ãŒãã³ã°ã®ç 究çšéã§å€ãçšããããŠããŸããæè»æ§ãšé床ããããŠçŽæçãªã€ã³ã¿ãŒãã§ãŒã¹ãç¹åŸŽã§ãã
PyTorchã¯èªå埮åã·ã¹ãã ãšåŒ·åãªæé©åã©ã€ãã©ãªãæã£ãŠããŸãããŸããNumpyã®ããã«ç°¡åã«äœ¿çšã§ãããã³ãœã«ã©ã€ãã©ãªãåããŠããŸãã
é«åºŠãªæ©èœãå¿ èŠãšããç 究è éã«äººæ°ã§ãç®åºããçµæãè¿ éã«åæ ã§ãããããã¢ã«ãŽãªãºã ã®èª¿æŽãæ°ããªã¢ãã«ã®éçºã«ãã䜿ãããŸãã
3.4 Kerasã®çŽ¹ä»ãšç¹åŸŽ
æåŸã«çŽ¹ä»ããã©ã€ãã©ãªã¯Kerasã§ãããã®ã©ã€ãã©ãªã¯Pyhtonã§æžããããªãŒãã³ãœãŒã¹ã®ãã¥ãŒã©ã«ãããã¯ãŒã¯ã©ã€ãã©ãªã§ããŠãŒã¶ãŒã€ã³ã¿ãŒãã§ãŒã¹ãã·ã³ãã«ã§äœ¿ããããã®ãç¹åŸŽã§ãã
Kerasã¯åå©çšå¯èœãªéšåãçµã¿åãããŠã¢ãã«ãæ§ç¯ããããšã匷ãæšå¥šããŠããŸããããã«ããç¥çµç¶²ã®ã¿ã¹ã¯ãããå¹ççã«ãªããŸãã
ãŸããCPUãšGPUã§ã·ãŒã ã¬ã¹ã«å®è¡ã§ãããããèšç®é床ãåªããŠããŸããPythonããã°ã©ããŒã«ãšã£ãŠã®è² æ ãæå°éã«æããŠã¢ãã«ãéçºããããšãã§ããã©ã€ãã©ãªãšãããã§ãããã
4. Webéçºã«äœ¿ãPythonã©ã€ãã©ãª
Pythonã¯ãã®é«ãæè»æ§ãšæ±çšæ§ã®ãããWebéçºã«ãããŠãå€ã䜿çšãããŠããŸããç¹ã«ããã€ãã®Pythonã©ã€ãã©ãªã¯ãWebã¢ããªã±ãŒã·ã§ã³ã®æ§ç¯ãå©ããããã®éåžžã«äŸ¿å©ãªããŒã«ãšãªã£ãŠããŸãã
以äžã«ãWebéçºã§ãã䜿ãããPythonã©ã€ãã©ãªãããã€ã玹ä»ããŸããããããã®ã©ã€ãã©ãªã«ã€ããŠã圹ç«ã€ç¹åŸŽã䜿çšæ¹æ³ã解説ããŠãããŸãã
4.1 Djangoã®çŽ¹ä»ãšç¹åŸŽ
Djangoã¯Pythonã®Webãã¬ãŒã ã¯ãŒã¯ã®äžã€ã§ã倧èŠæš¡ãªWebã¢ããªã±ãŒã·ã§ã³ã®éçºãå©ããããã®ããŒã«çŸ€ãæäŸããŠããŸãããã ããå°èŠæš¡ãªWebã¢ããªã±ãŒã·ã§ã³ã§ã䜿çšããããšãå¯èœã§ãã
Djangoã®äž»ãªç¹åŸŽã¯ãã®å ç¢ããšæ±çšæ§ã§ããé«ãã»ãã¥ãªãã£ãä¿ã¡ãªãããããŸããŸãªWebã¢ããªã±ãŒã·ã§ã³ãçŽ æ©ãéçºããããšãå¯èœã§ããæ¬æ ŒçãªWebã¢ããªã±ãŒã·ã§ã³ãéçºããããã®å®å šãªæ©èœãåããŠããŸãã
ãŸããDjangoã¯Pythonã®åŒ·åãªç¹æ§ãçãããDRYïŒDon’t Repeat YourselfïŒã®ååãæ¯ããèšèšã«ãªã£ãŠããŸããããã«ãããã³ãŒãã®éè€ãæå°éã«æããããšãã§ããŸãã
4.2 Flaskã®çŽ¹ä»ãšç¹åŸŽ
FlaskããŸãPythonã®Webãã¬ãŒã ã¯ãŒã¯ã®äžã€ã§ãããDjangoãšã¯å¯Ÿç §çã«ãFlaskã¯å°èŠæš¡ãªã¢ããªã±ãŒã·ã§ã³ã®éçºã«ç¹åããŠããŸãã
Flaskã®äž»ãªç¹åŸŽã¯ãã®è»œéããšã·ã³ãã«ãã§ããå¿ èŠæäœéã®æ©èœã®ã¿ãæäŸãããã®ä»£ããã«éåžžã«è»œéã§åãæ±ããããèšèšã«ãªã£ãŠããŸãã
Flaskã¯ãŠãŒã¶ãŒãã¬ã³ããªãŒãªãã¶ã€ã³ããããŠãããããã°ã©ããŒãçŽæçã«ç解ã§ããéåžžã«èªã¿ãããã³ãŒããæžãããšãã§ããŸããå°èŠæš¡ãªWebã¢ããªã±ãŒã·ã§ã³ã®éçºã«é©ããPythonã©ã€ãã©ãªãšãããã§ãããã
4.3 Pytestã®çŽ¹ä»ãšç¹åŸŽ
Pytestã¯Pythonã®ãã¹ããã¬ãŒã ã¯ãŒã¯ã®äžã§ãç¹ã«äººæ°ãé«ããWebéçºã«ããããã¹ãäœæã«éåžžã«äŸ¿å©ãªããŒã«ã§ãã
Pytestã®ç¹åŸŽã¯ãã®ç°¡äŸ¿ããšæè»æ§ã§ããå®è¡é床ãéãããã¹ãã®ã»ããã¢ãããã¯ãªãŒã³ã¢ããã容æã§ãªããã€åŒ·åãªãã£ã¯ã¹ãã£ã®ã·ã¹ãã ãæã€ããšã倧ããªç¹åŸŽãšãªã£ãŠããŸãã
ãŸããPytestã¯å€±æãããã¹ãã®è©³çŽ°ãªæ å ±ãæäŸãããããã°ã容æã«ããŸããããã«ããããšã©ãŒãç¹å®ãããããªãããããã¹ãã®å¹çæ§ãåäžããŸãã
4.4 Seleniumã®çŽ¹ä»ãšç¹åŸŽ
Seleniumã¯èªååãã¹ãããŒã«ã§ãäž»ã«Webãã©ãŠã¶ã®èªååãã¹ãã«äœ¿çšãããŸãã
Seleniumã®ç¹åŸŽã¯ãäž»ã«å€æ©èœããšãã©ãŠã¶ã®äºææ§ã§ããSelenium WebDriverã䜿çšããããšã§ã䜿çšè ã®ã¢ã¯ã·ã§ã³ãæš¡æ¬ãããã¹ããå®è¡ããããšãã§ããŸãã
ãŸããPythonãå«ãå€ãã®ããã°ã©ãã³ã°èšèªããµããŒãããŠãããããæ¢åã®ãã¹ãã¹ã€ãŒããšã®çµ±åã容æã§ããç¹å®ã®Webãã©ãŠã¶ã§ããå®è¡ã§ããªããã¹ããé¿ããããã®çµ¶åŠãªéžæãšãªããŸãã
5. APIéçºã«äœ¿ãPythonã©ã€ãã©ãª
æ¬ç« ã§ã¯ãAPIéçºãè¡ãéã«å©çšã§ããPythonã©ã€ãã©ãªã玹ä»ããŸãããããã®ã©ã€ãã©ãªã¯ãéçºå¹çãé«ããããã¯ãšã³ãåŠçã軜æžããŸãã
ããã§ã¯äžã€ãã€èŠãŠãããŸãããã
ãããã®ã©ã€ãã©ãªã®éžæã¯ãããžã§ã¯ãã®èŠæš¡ãèŠä»¶ã«ããç°ãªããŸãã®ã§ãã©ããæé©ãã¯åãããžã§ã¯ãã«ãããŸãã
5.1 Requestsã®çŽ¹ä»ãšç¹åŸŽ
Pythonã§HTTPéä¿¡ãç°¡æã«è¡ãããã®ã©ã€ãã©ãªæŠéã©ã³ããŒã§ããRequestsãPythonã§ã®HTTPãããã³ã«æäœãããã·ã³ãã«ã«è¡ããã®ãæ倧ã®ç¹åŸŽã§ãã
ããã«ãã»ãã·ã§ã³ã®ä¿æãã¯ãããŒæ å ±ã®ååŸããããã·æ¯æŽãSSL蚌ææžæ€èšŒãšãã£ãããšãç°¡åã«è¡ããããã«ãªã£ãŠããŸãã
ãã®ãããAPIéçºã ãã§ãªãããŠã§ãã¹ã¯ã¬ã€ãã³ã°ãªã©å¹ åºãã³ã³ããã¹ãã§å©çšãããŸãã
5.2 Django Rest Frameworkã®çŽ¹ä»ãšç¹åŸŽ
Django Rest Frameworkã¯ãAPIéçºã«ç¹åããã©ã€ãã©ãªã®äžã€ã§ããDjangoãšãšãã«äœ¿çšããããšã§ãããå¹ççãªAPIéçºãå¯èœã«ãªããŸãã
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5.3 PyJWTã®çŽ¹ä»ãšç¹åŸŽ
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5.4 OAuthLibã®çŽ¹ä»ãšç¹åŸŽ
OAuthã«é¢é£ããé¢æ°çŸ€ãæäŸããOAuthLibãèšå®åã®ã©ã€ãã©ãªã§ã¯ãªããèªåã§OAuthã«é¢ããç¹å®ã®æ©èœãå®è£ ããããã®ããŒã«ããããšãèšããŸãã
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6. Pythonã©ã€ãã©ãªéžã³ã®ãã€ã³ã
Pythonãå©çšããäžã§ãé©åãªã©ã€ãã©ãªãéžã¶ããšã¯éåžžã«éèŠã§ãããããžã§ã¯ãã®é²è¡ãéçºå¹çã倧ãã圱é¿ãåããŸããä»åã¯ãPythonã®ã©ã€ãã©ãªãéžã¶éã®äž»èŠãªãã€ã³ããæããŠã¿ãŸãããã
6.1 ã©ã€ãã©ãªã®æŽ»çšãã€ã³ã
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6.2 ããã¥ã¡ã³ããŒã·ã§ã³ã®ç¢ºèªæ¹æ³
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6.3 ãµããŒããšã³ãã¥ããã£ã®æŽ»çš
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6.4 ã©ã€ãã©ãªæŽæ°ãšå®å®æ§ã®æ¯èŒ
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