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ishideo id:ishideo

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Pythonã‚’ä½¿ã£ã¦é–¢æ•°åž‹ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚° Part.2
2019å¹´9æœˆ16ã€17æ—¥ã€æ—¥æœ¬æœ€å¤§ã®Pythonã®ç¥å…¸ã§ã‚ã‚‹ã€ŒPyCon JP 2019ã€ãŒé–‹å‚¬ã•ã‚Œã¾ã—ãŸã€‚ã€ŒPython New Eraã€ã‚’ã‚ãƒ£ãƒƒãƒã‚³ãƒ”ãƒ¼ã«ã€æ—¥æœ¬ã ã‘ã§ãªãä¸–ç•Œå„åœ°ã‹ã‚‰Python ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ãŸã¡ãŒä¸€å ‚ã«ä¼šã—ã€ã•ã¾ã–ã¾ãªçŸ¥è¦‹ã‚’å…±æœ‰ã—ã¾ã™ã€‚ãƒ—ãƒ¬ã‚¼ãƒ³ãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã€ŒPythonã¦ã‚™å§‹ã‚ã¦ã¿ã‚ˆã†é–¢æ•°åž‹ãƒ•ã‚šãƒã‚¯ã‚™ãƒ©ãƒŸãƒ³ã‚¯ã‚™ã€ã«ç™»å£‡ã—ãŸã®ã¯ã€æ ªå¼ä¼šç¤¾SQUEEZEã®å¯ºå¶‹å“²æ°ã€‚è¬›æ¼”è³‡æ–™ã¯ã“ã¡ã‚‰ ä¸å¤‰ï¼æ°¸ç¶šãƒ‡ãƒ¼ã‚¿æ§‹é€ ã‚’æä¾›ã™ã‚‹ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ å¯ºå¶‹å“²æ°ï¼šç¶šã„ã¦ã€ä¸å¤‰ï¼æ°¸ç¶šãƒ‡ãƒ¼ã‚¿æ§‹é€ ã«ã¤ã„ã¦ã§ã™ã€‚ listã‚’æ“ä½œã™ã‚‹é–¢æ•°ã®å•é¡Œç‚¹ã«ã¤ã„ã¦ã€ä¾‹é¡Œã§è¦‹ã¦ã„ãã¾ã—ã‚‡ã†ã€‚add_mangoã¯æžœç‰©åã®æ–‡å—åˆ—ã®listã‚’ã¨ã£ã¦ã€mangoã‚’ãã®listã«è¶³ã—ã¦è¿”ã—ã¾ã™ã€‚change_from_apple_to_bananaã¯ã€åŒã˜ã‚ˆã†ã«listã‚’ã¨ã£ã¦appleã‚’æŽ¢ã—ã¦ã€bananaã«å…¥ã‚Œæ›¿ãˆã¦è¿”ã—ã¾ã™ã€‚ ãã®
ishideo 2020/03/05
python

functional

list

pyrsistent

dict

pampy

match

monad

maybe
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å¿˜ã‚ŒãŒã¡ã ãŒã€ä¾¿åˆ©ãªPythonã®ãƒ‡ãƒ¼ã‚¿åž‹ 5ã¤ - Qiita
Pythonã¯æ¨™æº–ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãŒéžå¸¸ã«å¼·åŠ›ã§ã™ãŒã€ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãŒå¤šã™ãŽã¦æŠŠæ¡ã—ãã‚Œã¦ã„ãªã„ã€æŠŠæ¡ã—ã¦ã„ã‚‹ã‘ã‚Œã©ã‚‚å˜åœ¨ã‚’å¿˜ã‚Œã¦è»Šè¼ªã®å†ç™ºæ˜Žã‚’ã—ã¦ã—ã¾ã†äººã‚‚å¤šã„ã®ã§ã¯ãªã„ã§ã—ã‚‡ã†ã‹ï¼Ÿå°‘ãªãã¨ã‚‚ç†è€…ã¯ãã‚“ãªäººé–“ã®ä¸€äººãªã®ã§ã€è‡ªåˆ†ç”¨ã®ãƒ¡ãƒ¢ã‚‚å…¼ãã¦ã€ä¾¿åˆ©ã ãŒæ„è˜ã—ã¦ã„ãªã„ã¨ä½¿ã‚ãªã„ã€Pythonã®æ¨™æº–ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«å«ã¾ã‚Œã¦ã„ã‚‹ãƒ‡ãƒ¼ã‚¿åž‹ã‚’å¹¾ã¤ã‹ç´¹ä»‹ã—ã¾ã™ã€‚ DefaultDict å…¬å¼ãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆï¼š https://docs.python.jp/3/library/collections.html#collections.defaultdict æ–‡å—é€šã‚Šã€ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã®å€¤ã‚’è¨å®šã§ãã‚‹è¾žæ›¸åž‹ã€‚ ã“ã‚ŒãŒä¾¿åˆ©ãªã®ã¯ã€ã„ã¡ã„ã¡ã‚ãƒ¼ãŒè¾žæ›¸ã«ç™»éŒ²ã•ã‚Œã¦ã„ã‚‹ã‹ã‚’ç¢ºèªã—ãªãã¦ã„ã„ç‚¹ã§ã™ã€‚ä¾‹ãˆã°ã€å˜èªžã®å‡ºç¾å›žæ•°ã‚’æ•°ãˆä¸Šã’ã‚‹æ™‚ã«ã€ä»¥ä¸‹ã®ã‚ˆã†ãªå½¢ã§ä½¿ãˆã¾ã™ï¼š >>> from collections import defaultd
ishideo 2020/02/25
python

collections

OrdredDict

PriorityQueue

deque

Counter

DefaultDict

dict

qiita
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How can I convert string to dict or list?
ishideo 2019/10/29
python

dict

list

convert

ast

literal_eval

json

eval

stackoverflow
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Define a jsonable type using mypy / PEP-526
ishideo 2019/08/01
python

json

typeerror

mypy

sequence

dict

stackoverflow
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How to Use Static Type Checking in Python 3.6
One of the most common complaints about the Python language is that variables are Dynamically Typed. That means you declare variables without giving them a specific data type. Types are automatically assigned at based on what data was passed in: In this case, the variable president_name is created as str type because we passed in a string. But Python didnâ€™t know it would be a string until it actua
ishideo 2019/07/03
type

typhints

python

mypy

dict

typing
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pythonã®Pandasãƒ‡ãƒ¼ã‚¿ãƒ•ãƒ¬ãƒ¼ãƒ ã‹ã‚‰ã€æ‰€å®šã®è¾žæ›¸åž‹ã«å¤‰æ›ã™ã‚‹æ–¹æ³•ã‚’æ•™ãˆã¦ãã ã•ã„ã€‚
pythonã®Pandasãƒ‡ãƒ¼ã‚¿ãƒ•ãƒ¬ãƒ¼ãƒ ã§ã€ä»¥ä¸‹ã®ã‚ˆã†ãªãƒ‡ãƒ¼ã‚¿ãŒã‚ã‚Šã¾ã™ã€‚ ã“ã‚Œã‚’ã€ä»¥ä¸‹ã®ã‚ˆã†ã«å¤‰æ›ã™ã‚‹æ–¹æ³•ã‚’çŸ¥ã‚ŠãŸã„ã§ã™ã€‚ x={'it em1':1,'it em2':1,'it em4':1} y={'it em1':1,'it em3':1} ã¡ãªã¿ã«ã€ã“ã‚Œã§å®Ÿè¡Œã™ã‚Œã°ã€Œ0ã€ã®å€¤ã‚‚å«ã¾ã‚Œã¦ã—ã¾ã„ã€æƒœã—ã„ã‚ã‘ã§ã™ã€‚ In:dict(df.ix['x']) Out:{'it em1': 1, 'it em2': 1, 'it em3': 0, 'it em4': 1} èª¬æ˜ŽãŒä¸è¶³ã—ã¦ã„ã‚Œã°è£œè¶³ã—ã¾ã™ã®ã§ã€å›žç”ã„ãŸã ã‘ã‚Œã°ã‚ã‚ŠãŒãŸã„ã§ã™ã€‚ ã‚ˆã‚ã—ããŠé¡˜ã„ã—ã¾ã™ã€‚
ishideo 2017/07/16
python

pandas

dataframe

dict

stackoverflow
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