mypy - Optional Static Typing for Python
Compile-time type checking Static typing makes it easier to find bugs with less debugging. Easier maintenance Type declarations act as machine-checked documentation. Static typing makes your code easier to understand and easier to modify without introducing bugs. Grow your programs from dynamic to static typing You can develop programs with dynamic typing and add static typing after your code has
mypyã‚„ã£ã¦ã„ããž - Qiita
$ mypy test.py test.py: note: In function "func": test.py:2: error: Incompatible return value type (got "str", expected "int") アノテーションを元ã«åž‹ã‚’ãƒã‚§ãƒƒã‚¯ã—ã¦ã€æˆ»ã‚Šå€¤ã®åž‹ãŒintãªã®ã«strã‚’è¿”ã—ã¦ã„ã‚‹ã®ã§ã‚¨ãƒ©ãƒ¼ã«ãªã‚Šã¾ã™ã€‚ ã‚„ã£ã¦ã„ãæ°—æŒã¡ "mypyã‚„ã£ã¦ã„ã"ã¨ã„ã†ã®ã¯ã€PEP 484ã«å¯¾å¿œã—ãŸåž‹ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã‚’付ã‘ã€mypyを実行ã—é™çš„ãƒã‚§ãƒƒã‚¯ã‚’パスã™ã‚‹ã“ã¨ã‚’指ã—ã¾ã™ã€‚ãªãœã‚„ã£ã¦ã„ãæ°—æŒã¡ã«ãªã£ãŸã‹ã¨ã„ã†ã¨ã€Static types in Python, oh my(py)! ã“ã®è¨˜äº‹ã‚’èªã‚“ã ã“ã¨ãŒå¤§ãã„ã§ã™ã€‚ã‚„ã£ã¦ã„ã‘ãã†ãªæ°—ãŒã—ã¾ã—ãŸã€‚担当ã—ã¦ã„る案件ãŒè¦æ¨¡ãŒå¤§ããæ—¢å˜æ©Ÿèƒ½ã®å¤‰æ›´é »åº¦ã‚‚高ã„ã‚‚ã®ã ã£ãŸã®ã§ã€ä¿¡é ¼ã§ãる型アノテーションãŒæœ‰ã‚‹ã¨ã€ä¿®æ£ã™ã‚‹
[翻訳] Python ã®é™çš„åž‹ã€ã™ã”ã„ mypy! - Qiita
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