{"id":26464,"date":"2025-12-04T20:08:29","date_gmt":"2025-12-04T20:08:29","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=26464"},"modified":"2025-12-04T20:08:29","modified_gmt":"2025-12-04T20:08:29","slug":"rust%e3%81%a7%e6%9b%b8%e3%81%8b%e3%82%8c%e3%81%9f%e9%ab%98%e9%80%9fpython%e5%9e%8b%e3%83%81%e3%82%a7%e3%83%83%e3%82%ab%e3%83%bc%e3%80%8cpyrefly%e3%80%8d%e3%81%ae%e7%b4%b9%e4%bb%8b-gihyo-jp","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/26464\/","title":{"rendered":"Rust\u3067\u66f8\u304b\u308c\u305f\u9ad8\u901fPython\u578b\u30c1\u30a7\u30c3\u30ab\u30fc\u300cPyrefly\u300d\u306e\u7d39\u4ecb | gihyo.jp"},"content":{"rendered":"\n<\/p>\n<div id=\"\">\n<p id=\"gh2YJkGchK\">\u7b52\u4e95<wbr\/>\uff08<a target=\"_blank\" href=\"https:\/\/twitter.com\/ryu22e\">@ryu22e<\/a>\uff09<wbr\/>\u3067\u3059\u3002\u4eca\u6708\u306e<wbr\/>\u300cPython Monthly Topics\u300d<wbr\/>\u306f\u3001\u578b\u30c1\u30a7\u30c3\u30ab\u30fc<wbr\/>\u300c<a target=\"_blank\" href=\"https:\/\/pyrefly.org\/\">Pyrefly<\/a>\u300d<wbr\/>\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h2 id=\"gh4EPg2SZe\">Pyrefly\u306e\u6982\u8981\u3068\u7279\u5fb4<\/h2>\n<p id=\"gh3RTr2uWT\">Pyrefly\u306fMeta\u793e\u304c\u958b\u767a\u3057\u305f\u578b\u30c1\u30a7\u30c3\u30ab\u30fc\u3067\u3059\u3002\u30ed\u30b4\u304c\u30db\u30bf\u30eb<wbr\/>\uff08firefly\uff09<wbr\/>\u3092\u30a4\u30e1\u30fc\u30b8\u3057\u305f\u30c7\u30b6\u30a4\u30f3\u3067\u3001<wbr\/><span style=\"font-feature-settings:'palt'\">\u300c<\/span>\u2060\u30d1\u30a4\u30a2\u30d5\u30e9\u30a4\u300d<wbr\/>\u3068\u767a\u97f3\u3057\u307e\u3059<a target=\"_blank\" href=\"#fn1\" id=\"fn-ref1\" class=\"fn-noteref\" role=\"doc-noteref\">[1]<\/a>\u3002<\/p>\n<aside id=\"fn1\" class=\"fn\" role=\"doc-footnote\">\n<p id=\"gh3z4yh6_R\"><a target=\"_blank\" href=\"#fn-ref1\" class=\"fn-backlink\" role=\"doc-backlink\">[1]<\/a> \u53c2\u8003\uff1a\u516c\u5f0f\u30b5\u30a4\u30c8FAQ<wbr\/>\u300c<a target=\"_blank\" href=\"https:\/\/pyrefly.org\/en\/docs\/pyrefly-faq\/#how-do-i-pronounce-pyrefly\">How do I pronounce Pyrefly?<\/a>\u300d<\/p>\n<\/aside>\n<p id=\"gh9JqEi_aB\">Python\u306e\u578b\u30c1\u30a7\u30c3\u30ab\u30fc\u3068\u3044\u3048\u3070<a target=\"_blank\" href=\"https:\/\/mypy-lang.org\/\">Mypy<\/a>\u3001<a target=\"_blank\" href=\"https:\/\/github.com\/microsoft\/pyright\">Pyright<\/a>\u306a\u3069\u306e\u65e2\u5b58\u30c4\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u304c\u3001Pyrefly\u306b\u306f\u305d\u308c\u3089\u306b\u306f\u306a\u3044\u4ee5\u4e0b\u306e\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul id=\"ghpO70ONTQ\">\n<li id=\"gh3CwKhs7q\">Rust\u3067\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u9ad8\u901f\u306b\u52d5\u4f5c<\/li>\n<li id=\"ghekcz_iGK\">WASM\u7248\u3082\u3042\u308b\u305f\u3081\u3001\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067\u5229\u7528\u53ef\u80fd<\/li>\n<li id=\"ghbdj9_SxQ\">\u30b3\u30fc\u30c9\u306b\u81ea\u52d5\u3067\u578b\u30d2\u30f3\u30c8\u3092\u4ed8\u3051\u308b\u6a5f\u80fd<\/li>\n<\/ul>\n<p id=\"ghPHNVBJZD\">Meta\u793e\u88fd\u306e\u578b\u30c1\u30a7\u30c3\u30ab\u30fc\u3068\u3044\u3048\u3070<a target=\"_blank\" href=\"https:\/\/pyre-check.org\/\">Pyre<\/a>\u304c\u3042\u308a\u307e\u3059\u304c\u3001Pyrefly\u306fPyre\u306e\u5f8c\u7d99\u30c4\u30fc\u30eb\u3067\u3059\u3002Pyrefly\u304c\u8a95\u751f\u3057\u305f\u7d4c\u7def\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306eMeta\u793e\u306e\u30d6\u30ed\u30b0\u306b\u8a73\u7d30\u304c\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p id=\"gh5pqwl497\">Python\u306e\u578b\u30b7\u30b9\u30c6\u30e0\u304c\u9032\u5316\u3057\u3001IDE\u304b\u3089\u5229\u7528\u53ef\u80fd\u306a\u578b\u30c1\u30a7\u30c3\u30af\u306e\u5fc5\u8981\u6027\u304c\u9ad8\u307e\u3063\u305f\u305f\u3081\u3001\u65b0\u305f\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u5fc5\u8981\u3068\u306a\u308a\u3001Pyrefly\u3092\u958b\u767a\u3057\u305f\u3068\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n<h2 id=\"gh3TXCfUQ7\">Pyrefly\u306e\u4f7f\u3044\u65b9<\/h2>\n<p id=\"gh5GvCE7LD\">\u305d\u308c\u3067\u306f\u3001Pyrefly\u4f7f\u3044\u65b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u578b\u30c1\u30a7\u30c3\u30af\u306e\u5bfe\u8c61\u306b\u3057\u307e\u3059\u3002<\/p>\n<figure class=\"f-pre-code\" id=\"gh9cBNeN3k\"><figcaption>\u578b\u30c1\u30a7\u30c3\u30af\u306e\u5bfe\u8c61\u306b\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9 example.py<\/figcaption><pre id=\"gh7qdcQIUo\"><code class=\"language-python\"><span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">convert_movie_info_into_md<\/span>(<span class=\"hljs-params\">title: <span class=\"hljs-built_in\">str<\/span>, year: <span class=\"hljs-built_in\">int<\/span>, description: <span class=\"hljs-built_in\">str<\/span><\/span>) -&gt; <span class=\"hljs-built_in\">str<\/span>:\n    <span class=\"hljs-string\">\"\"\"\u6620\u753b\u306e\u60c5\u5831\u3092Markdown\u5f62\u5f0f\u3067\u8fd4\u3059\"\"\"<\/span>\n    markdown = <span class=\"hljs-string\">f\"# <span class=\"hljs-subst\">{title}<\/span> (<span class=\"hljs-subst\">{year}<\/span>)\\n\\n<span class=\"hljs-subst\">{description}<\/span>\\n\"<\/span>\n    <span class=\"hljs-keyword\">return<\/span> markdown\n\n\n<span class=\"hljs-built_in\">print<\/span>(\n    convert_movie_info_into_md(\n        <span class=\"hljs-string\">\"\u30a8\u30d4\u30bd\u30fc\u30c94\/\u65b0\u305f\u306a\u308b\u5e0c\u671b\"<\/span>,\n        <span class=\"hljs-number\">1977<\/span>,\n        <span class=\"hljs-string\">\"\u9280\u6cb3\u7cfb\u3092\u821e\u53f0\u306b\u3057\u305f\u58ee\u5927\u306a\u30b9\u30da\u30fc\u30b9\u30aa\u30da\u30e9\u306e\u59cb\u307e\u308a\u3002\"<\/span>,\n    )\n)\n<span class=\"hljs-built_in\">print<\/span>(\n    convert_movie_info_into_md(\n        <span class=\"hljs-string\">\"\u30a8\u30d4\u30bd\u30fc\u30c95\/\u5e1d\u56fd\u306e\u9006\u8972\"<\/span>,\n        <span class=\"hljs-number\">1980<\/span>,\n        <span class=\"hljs-string\">\"\u30c0\u30fc\u30b9\u30fb\u30d9\u30a4\u30c0\u30fc\u304c\u53cd\u4e71\u8ecd\u3092\u8ffd\u3044\u8a70\u3081\u308b\u3002\"<\/span>,\n    )\n)\n<span class=\"hljs-built_in\">print<\/span>(\n    convert_movie_info_into_md(\n        <span class=\"hljs-string\">\"\u30a8\u30d4\u30bd\u30fc\u30c96\/\u30b8\u30a7\u30c0\u30a4\u306e\u5e30\u9084\"<\/span>,\n        <span class=\"hljs-string\">\"1983\"<\/span>,  \n        <span class=\"hljs-string\">\"\u30eb\u30fc\u30af\u30fb\u30b9\u30ab\u30a4\u30a6\u30a9\u30fc\u30ab\u30fc\u304c\u30c0\u30fc\u30b9\u30fb\u30d9\u30a4\u30c0\u30fc\u3068\u5bfe\u6c7a\u3059\u308b\u3002\"<\/span>,\n    )\n)\n<\/code><\/pre>\n<\/figure>\n<p id=\"ghd7AWAtwX\">Pyrefly\u306fCLI\u304b\u3089\u4f7f\u3046\u65b9\u6cd5\u3068\u3001IDE\u304b\u3089\u4f7f\u3046\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305a\u306fCLI\u304b\u3089\u4f7f\u3046\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002\u4e0a\u8a18\u306eexample.<wbr\/>py\u304c\u30ab\u30ec\u30f3\u30c8\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u3042\u308b\u72b6\u614b\u3067\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3001CLI\u7248Pyrefly\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3068\u521d\u671f\u5316\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<figure class=\"f-pre-samp\" id=\"ghemSpqYvj\"><figcaption>CLI\u7248Pyrefly\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3068\u521d\u671f\u5316\u30b3\u30de\u30f3\u30c9\u306e\u5b9f\u884c<\/figcaption><pre id=\"gh8rmj6dq6\"><samp>$ pip install pyrefly &amp;&amp; pyrefly init\n\u3008\u7701\u7565\u3009\n INFO New config written to `\/***\/pyrefly.toml`\n INFO Running pyrefly check...\n INFO Checking project configured at `\/***\/pyrefly.toml`\n INFO 1 error\nFound 1 errors. We can add suppression comments (e.g., `pyrefly: ignore`) to silence them for you. Would you like to suppress them? (y\/N):\n<\/samp><\/pre>\n<\/figure>\n<p id=\"ghdkCg1sLS\">\u30b3\u30fc\u30c9\u306b\u3059\u3067\u306b\u30a8\u30e9\u30fc\u304c\u3042\u308b\u72b6\u614b\u3060\u3068\u3001<wbr\/><span style=\"font-feature-settings:'palt'\">\u300c<\/span>\u2060<code>Found *** errors. We can add suppression comments...<\/code>\u300d<wbr\/>\u3068\u3044\u3046\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u65e2\u5b58\u306e\u30a8\u30e9\u30fc\u306bignore\u30b3\u30e1\u30f3\u30c8\u3092\u4ed8\u3051\u3066\u3001\u30a8\u30e9\u30fc\u3092\u7121\u8996\u3059\u308b\u3088\u3046\u306b\u3059\u308b\u304b\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002<wbr\/><span style=\"font-feature-settings:'palt'\">\u300c<\/span>\u2060y\u300d<wbr\/>\u3068\u5165\u529b\u3057\u3066<kbd><kbd>Enter<\/kbd><\/kbd>\u30ad\u30fc\u3092\u62bc\u3059\u3068\u3001\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306e\u30a8\u30e9\u30fc\u7b87\u6240\u306b<code># pyrefly: ignore [bad-argument-type]<\/code>\u3068\u3044\u3046\u30b3\u30e1\u30f3\u30c8\u304c\u4ed8\u304d\u3001Pyrefly\u306e\u30c1\u30a7\u30c3\u30af\u5bfe\u8c61\u5916\u306b\u306a\u308a\u307e\u3059<wbr\/>\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u306f<wbr\/>\u300cN\u2060<span style=\"font-feature-settings:'palt'\">\u300d<\/span>\u2060<span style=\"font-feature-settings:'palt'\">\uff09<\/span>\u2060\u3002<\/p>\n<p id=\"gh1wWGqT4F\"><code>pyrefly init<\/code>\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u30ab\u30ec\u30f3\u30c8\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306bpyrefly.<wbr\/>toml\u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u304c\u3001Pyrefly\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3067\u3059\u3002\u307e\u305f\u3001pyproject.<wbr\/>toml\u304c\u3059\u3067\u306b\u5b58\u5728\u3059\u308b\u5834\u5408\u306f\u3001pyproject.<wbr\/>toml\u306bPyrefly\u306e\u8a2d\u5b9a\u304c\u66f8\u304d\u8fbc\u307e\u308c\u307e\u3059\u3002<\/p>\n<p id=\"gh6n1FeGSd\">Pyrefly\u306e\u8a2d\u5b9a\u9805\u76ee\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p id=\"gh5FvtD0fc\">\u578b\u30c1\u30a7\u30c3\u30af\u3092\u5b9f\u884c\u3059\u308b\u30b3\u30de\u30f3\u30c9\u306f<code>pyrefly check<\/code>\u3067\u3059\u3002\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure class=\"f-pre-samp\" id=\"ghdn9KQBYe\"><figcaption><code>pyrefly check<\/code>\u306e\u5b9f\u884c\u7d50\u679c<\/figcaption><pre id=\"gh1fIs4jjw\"><samp>$ pyrefly check\n INFO Checking project configured at `\/***\/pyrefly.toml`\nERROR Argument `Literal['1983']` is not assignable to parameter `year` with type `int` in function `convert_movie_info_into_md` [bad-argument-type]\n  --&gt; example.py:24:9\n   |\n24 |         \"1983\",  # \u6574\u6570\u578b\u306b\u3059\u308b\u3079\u304d\u3068\u3053\u308d\u3092\u6587\u5b57\u5217\u578b\u306b\u3057\u3066\u3044\u308b\n   |         ^^^^^^\n   |\n INFO 1 error\n<\/samp><\/pre>\n<\/figure>\n<p id=\"gheaw5TBPD\">\u6b21\u306b\u3001IDE\u307e\u305f\u306f\u30a8\u30c7\u30a3\u30bf\u304b\u3089\u4f7f\u3046\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002Pyrefly\u306fVS Code\u3001OpenVSX\u3001PyCharm\u3001Vim\u3001Emacs\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306aIDE\u3001\u30a8\u30c7\u30a3\u30bf\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p id=\"gh9VjaNReZ\">Pyrefly\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u308bIDE\u3001\u30a8\u30c7\u30a3\u30bf\u306b\u3064\u3044\u3066\u306e\u8a73\u7d30\u306f\u3001\u4ee5\u4e0b\u306e\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p id=\"ghdJa0ym3a\">\u3053\u3053\u3067\u306f\u3001VS Code\u3092\u4f7f\u3046\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002VS Code\u306ePyrefly\u30a8\u30af\u30b9\u30c6\u30f3\u30b7\u30e7\u30f3\u306f\u4ee5\u4e0b\u304b\u3089\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u304d\u307e\u3059\u3002<\/p>\n<p id=\"gh7iaq5CSJ\">\u4e0a\u8a18\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u72b6\u614b\u3067example.<wbr\/>py\u3092\u958b\u304f\u3068\u3001VS Code\u4e0a\u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure class=\"f-img\" id=\"gh24Pj8hHu\"><figcaption>VS Code\u306ePyrefly\u30a8\u30af\u30b9\u30c6\u30f3\u30b7\u30e7\u30f3\u3092\u5c0e\u5165\u3057\u305f\u7d50\u679c<\/figcaption><img src=\"https:\/\/gihyo.jp\/assets\/images\/article\/2025\/12\/monthly-python-2512\/001.png\" alt=\"VS Code\u306ePyrefly\u30a8\u30af\u30b9\u30c6\u30f3\u30b7\u30e7\u30f3\u3092\u5c0e\u5165\u3057\u305f\u7d50\u679c\" loading=\"lazy\" width=\"1100\" height=\"465\" decoding=\"async\"\/><br \/>\n<\/figure>\n<h2 id=\"ghbzLfIiOP\">Pyrefly\u3068\u4ed6\u306e\u578b\u30c1\u30a7\u30c3\u30ab\u30fc\u306e\u901f\u5ea6\u3092\u6bd4\u8f03\u3059\u308b<\/h2>\n<p id=\"ghc4UgsnXe\">Pyrefly\u306fRust\u3067\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u4ed6\u306e\u578b\u30c1\u30a7\u30c3\u30ab\u30fc\u3088\u308a\u975e\u5e38\u306b\u9ad8\u901f\u3067\u3059\u3002<a target=\"_blank\" href=\"https:\/\/github.com\/sphinx-doc\/sphinx\/releases\/tag\/v8.2.3\">Sphinx 8.<wbr\/>2.3<\/a>\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u5bfe\u8c61\u306b\u3001Mypy\u3001Pyright<wbr\/>\uff08Node.<wbr\/>js\u7248\u2060<span style=\"font-feature-settings:'palt'\">\uff09<\/span>\u2060\u3001Pyrefly\u306e3\u3064\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6bd4\u8f03\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<div class=\"table-wrapper\" id=\"gh3KtdEIBU\">\n<div class=\"s_table\"><table>\n<thead>\n<tr>\n<th scope=\"col\">\u30c4\u30fc\u30eb\u540d<\/th>\n<th scope=\"col\">\u30d0\u30fc\u30b8\u30e7\u30f3<\/th>\n<th scope=\"col\">\u5b9f\u884c\u6642\u9593<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Mypy<\/td>\n<td>1.<wbr\/>19.<wbr\/>0<\/td>\n<td>4.<wbr\/>19\u79d2<\/td>\n<\/tr>\n<tr>\n<td>Pyright<\/td>\n<td>1.<wbr\/>1.407<\/td>\n<td>16.<wbr\/>81\u79d2<\/td>\n<\/tr>\n<tr>\n<td>Pyrefly<\/td>\n<td>0.<wbr\/>43.<wbr\/>1<\/td>\n<td>2.<wbr\/>17\u79d2<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n<p id=\"gh5C8mZkog\">Pyrefly\u306e\u5b9f\u884c\u6642\u9593\u306fMypy\u306e\u7d041\/<wbr\/>2\u3001Pyright\u306e\u7d041\/<wbr\/>8\u3068\u3001\u304b\u306a\u308a\u9ad8\u901f\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002<\/p>\n<p id=\"ghdqIDCYFf\">\u3061\u306a\u307f\u306b\u3001Pyrefly\u3068\u540c\u3058\u304fRust\u3067\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u578b\u30c1\u30a7\u30c3\u30ab\u30fc\u3068\u3057\u3066<a target=\"_blank\" href=\"https:\/\/docs.astral.sh\/ty\/\">ty<\/a>\u304c\u3042\u308a\u307e\u3059\u3002ty\u306f\u3001Python\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u7ba1\u7406\u30c4\u30fc\u30eb<a target=\"_blank\" href=\"https:\/\/docs.astral.sh\/uv\/\">uv<\/a>\u3092\u958b\u767a\u3057\u3066\u3044\u308bAstral\u793e\u88fd\u306e\u30c4\u30fc\u30eb\u3067\u3059\u3002ty\u3067\u3082\u540c\u69d8\u306b\u5b9f\u884c\u6642\u9593\u3092\u8a08\u6e2c\u3057\u305f\u3068\u3053\u308d\u30012.<wbr\/>35\u79d2\u3068\u3044\u3046\u7d50\u679c\u3067\u3057\u305f\u3002ty\u306f\u672c\u8a18\u4e8b\u57f7\u7b46\u6642\u70b9\u3067\u306f\u30a2\u30eb\u30d5\u30a1\u7248<wbr\/>\uff08\u30d0\u30fc\u30b8\u30e7\u30f3\u306f0.<wbr\/>0.1-alpha.<wbr\/>29\uff09<wbr\/>\u3067\u307e\u3060\u5b9f\u7528\u6bb5\u968e\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u5358\u7d14\u306b\u6bd4\u8f03\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u304c\u3001Pyrefly\u3068\u540c\u7a0b\u5ea6\u306e\u901f\u5ea6\u3092\u671f\u5f85\u3067\u304d\u305d\u3046\u306a\u6570\u5b57\u3067\u3059\u3002<\/p>\n<h2 id=\"gh3rYeiZl5\">\u30d6\u30e9\u30a6\u30b6\u304b\u3089Pyrefly\u3092\u4f7f\u3063\u3066\u307f\u308b<\/h2>\n<p id=\"ghcXKCgyRI\">Pyrefly\u306fWASM\u7248\u3082\u63d0\u4f9b\u3055\u308c\u3066\u304a\u308a\u3001\u30d6\u30e9\u30a6\u30b6\u4e0a\u304b\u3089\u578b\u30c1\u30a7\u30c3\u30af\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<p id=\"ghv_m8TJx6\">\u4ee5\u4e0b\u306e\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u304c\u4f7f\u3048\u307e\u3059\u3002<\/p>\n<dl id=\"ghFBJyOlvK\">\n<dt id=\"gh9jo2Ti8J\">Try Pyrefly: the Pyrefly Sandbox | Pyrefly<\/dt>\n<dd id=\"ghdrdT1R1x\">URL\uff1a<a target=\"_blank\" href=\"https:\/\/pyrefly.org\/sandbox\/\">https:\/\/<wbr\/>pyrefly.<wbr\/>org\/<wbr\/>sandbox\/<\/a><\/dd>\n<\/dl>\n<p id=\"gh3RHQ_2BR\">\u524d\u8ff0\u306e<wbr\/>\u300cPyrefly\u306e\u4f7f\u3044\u65b9\u300d<wbr\/>\u3067\u4f7f\u3063\u305f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3082\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067\u578b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8868\u793a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure class=\"f-img\" id=\"gh7_n3SWz3\"><figcaption>\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u306e\u753b\u9762<\/figcaption><img src=\"https:\/\/gihyo.jp\/assets\/images\/article\/2025\/12\/monthly-python-2512\/002.png\" alt=\"\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u306e\u753b\u9762\" loading=\"lazy\" width=\"1100\" height=\"736\" decoding=\"async\"\/><br \/>\n<\/figure>\n<h2 id=\"ghauY_8Ra0\">\u30b3\u30fc\u30c9\u306b\u578b\u30d2\u30f3\u30c8\u3092\u3064\u3051\u3066\u304f\u308c\u308b<code>pyrefly infer<\/code>\u30b3\u30de\u30f3\u30c9<\/h2>\n<p id=\"gh1auyXWZR\">\u578b\u30c1\u30a7\u30c3\u30ab\u30fc\u3092\u5c0e\u5165\u3057\u305f\u304f\u3066\u3082\u3001\u73fe\u72b6\u306e\u30b3\u30fc\u30c9\u306b\u578b\u30d2\u30f3\u30c8\u304c\u306a\u3044\u306e\u3067\u6d3b\u7528\u3067\u304d\u306a\u3044\u3068\u3044\u3046\u30b1\u30fc\u30b9\u306f\u3088\u304f\u3042\u308a\u307e\u3059\u3002Pyrefly\u306b\u306f\u3001\u578b\u30d2\u30f3\u30c8\u304c\u306a\u3044\u30b3\u30fc\u30c9\u306b\u578b\u3092\u3064\u3051\u308b<code>pyrefly infer<\/code>\u3068\u3044\u3046\u4fbf\u5229\u306a\u30b3\u30de\u30f3\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p id=\"ghco9T3BrD\"><code>pyrefly infer<\/code>\u306b\u3064\u3044\u3066\u306e\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306f\u3001\u4ee5\u4e0b\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p id=\"gh9ILAwmxz\"><code>pyrefly infer<\/code>\u30b3\u30de\u30f3\u30c9\u306e\u4f7f\u3044\u65b9\u3092\u8aac\u660e\u3057\u307e\u3059\u3002\u307e\u305a\u3001\u524d\u8ff0\u306e<wbr\/>\u300cPyrefly\u306e\u4f7f\u3044\u65b9\u300d<wbr\/>\u3067\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u304b\u3089\u578b\u30d2\u30f3\u30c8\u3092\u306a\u304f\u3057\u305f\u30b3\u30fc\u30c9\u3092\u7528\u610f\u3057\u307e\u3059\u3002<code>convert_<wbr\/>movie_<wbr\/>info_<wbr\/>into_<wbr\/>md()<\/code>\u95a2\u6570\u306e\u547c\u3073\u51fa\u3057\u306f1\u3064\u3042\u308c\u3070\u578b\u63a8\u8ad6\u3057\u3066\u304f\u308c\u308b\u306e\u3067\u3001\u4ed6\u306e2\u3064\u306f\u524a\u308a\u307e\u3057\u305f\u3002<\/p>\n<figure class=\"f-pre-code\" id=\"gh8yOfVui9\"><figcaption>\u578b\u30d2\u30f3\u30c8\u304c\u66f8\u304b\u308c\u3066\u3044\u306a\u3044\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9 example_without_typehints.py<\/figcaption><pre id=\"ghbIbbbLK5\"><code class=\"language-python\"><span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">convert_movie_info_into_md<\/span>(<span class=\"hljs-params\">title, year, description<\/span>):\n    <span class=\"hljs-string\">\"\"\"\u6620\u753b\u306e\u60c5\u5831\u3092Markdown\u5f62\u5f0f\u3067\u8fd4\u3059\"\"\"<\/span>\n    markdown = <span class=\"hljs-string\">f\"# <span class=\"hljs-subst\">{title}<\/span> (<span class=\"hljs-subst\">{year}<\/span>)\\n\\n<span class=\"hljs-subst\">{description}<\/span>\\n\"<\/span>\n    <span class=\"hljs-keyword\">return<\/span> markdown\n\n\n<span class=\"hljs-built_in\">print<\/span>(\n    convert_movie_info_into_md(\n        <span class=\"hljs-string\">\"\u30a8\u30d4\u30bd\u30fc\u30c94\/\u65b0\u305f\u306a\u308b\u5e0c\u671b\"<\/span>,\n        <span class=\"hljs-number\">1977<\/span>,\n        <span class=\"hljs-string\">\"\u9280\u6cb3\u7cfb\u3092\u821e\u53f0\u306b\u3057\u305f\u58ee\u5927\u306a\u30b9\u30da\u30fc\u30b9\u30aa\u30da\u30e9\u306e\u59cb\u307e\u308a\u3002\"<\/span>,\n    )\n)\n<\/code><\/pre>\n<\/figure>\n<p id=\"gh2hqLQS3C\"><code>pyrefly infer<\/code>\u30b3\u30de\u30f3\u30c9\u306f\u3001\u30b3\u30fc\u30c9\u304c\u66f8\u304b\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9\u3001\u307e\u305f\u306f\u30d5\u30a1\u30a4\u30eb\u304c\u7f6e\u304b\u308c\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u30d1\u30b9\u3092\u6307\u5b9a\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<figure class=\"f-pre-samp\" id=\"gh1UKMlGaX\"><figcaption><code>pyrefly infer<\/code>\u30b3\u30de\u30f3\u30c9\u306e\u5b9f\u884c<\/figcaption><pre id=\"gh8z0QoV3s\"><samp>$ pyrefly infer example_without_typehints.py\n INFO 0 errors\n<\/samp><\/pre>\n<\/figure>\n<p id=\"gh6OTptWuG\"><code>pyrefly infer<\/code>\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u5f8c\u306eexample_<wbr\/>without_<wbr\/>typehints.<wbr\/>py\u306e\u5185\u5bb9\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002Pyrefly\u306f<code>convert_<wbr\/>movie_<wbr\/>info_<wbr\/>into_<wbr\/>md()<\/code>\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u3066\u3044\u308b\u30b3\u30fc\u30c9\u304b\u3089\u5f15\u6570\u3084\u623b\u308a\u5024\u306e\u578b\u3092\u63a8\u6e2c\u3057\u3001\u578b\u30d2\u30f3\u30c8\u3092\u3064\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure class=\"f-pre-code\" id=\"ghdG0ZX20T\"><figcaption><code>pyrefly infer<\/code>\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u5f8c\u306eexample_without_typehints.py<\/figcaption><pre id=\"ghahAdfJgU\"><code class=\"language-python\"><span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">convert_movie_info_into_md<\/span>(<span class=\"hljs-params\">title: <span class=\"hljs-built_in\">str<\/span>, year: <span class=\"hljs-built_in\">int<\/span>, description: <span class=\"hljs-built_in\">str<\/span><\/span>) -&gt; <span class=\"hljs-built_in\">str<\/span>:\n    <span class=\"hljs-string\">\"\"\"\u6620\u753b\u306e\u60c5\u5831\u3092Markdown\u5f62\u5f0f\u3067\u8fd4\u3059\"\"\"<\/span>\n    markdown = <span class=\"hljs-string\">f\"# <span class=\"hljs-subst\">{title}<\/span> (<span class=\"hljs-subst\">{year}<\/span>)\\n\\n<span class=\"hljs-subst\">{description}<\/span>\\n\"<\/span>\n    <span class=\"hljs-keyword\">return<\/span> markdown\n\n\n<span class=\"hljs-built_in\">print<\/span>(\n    convert_movie_info_into_md(\n        <span class=\"hljs-string\">\"\u30a8\u30d4\u30bd\u30fc\u30c94\/\u65b0\u305f\u306a\u308b\u5e0c\u671b\"<\/span>,\n        <span class=\"hljs-number\">1977<\/span>,\n        <span class=\"hljs-string\">\"\u9280\u6cb3\u7cfb\u3092\u821e\u53f0\u306b\u3057\u305f\u58ee\u5927\u306a\u30b9\u30da\u30fc\u30b9\u30aa\u30da\u30e9\u306e\u59cb\u307e\u308a\u3002\"<\/span>,\n    )\n)\n<\/code><\/pre>\n<\/figure>\n<p id=\"gh3fqsbDiM\">\u306a\u304a\u3001<code>pyrefly infer<\/code>\u30b3\u30de\u30f3\u30c9\u306f<a target=\"_blank\" href=\"https:\/\/pyrefly.org\/en\/docs\/autotype\/\">\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u306b\u3088\u308b\u3068\u3001<wbr\/><span style=\"font-feature-settings:'palt'\">\u300c<\/span>\u2060currently under active development<wbr\/>\uff08\u73fe\u5728\u958b\u767a\u4e2d\u2060<span style=\"font-feature-settings:'palt'\">\uff09<\/span>\u2060\u300d\u3068\u306e\u3053\u3068\u3067\u3059<wbr\/>\uff08\u30d0\u30fc\u30b8\u30e7\u30f30.<wbr\/>43.<wbr\/>1\u6642\u70b9\u2060<span style=\"font-feature-settings:'palt'\">\uff09<\/span>\u2060\u3002\u7b46\u8005\u304c\u3044\u304f\u3064\u304b\u306e\u30b3\u30fc\u30c9\u306b<code>pyrefly infer<\/code>\u30b3\u30de\u30f3\u30c9\u3092\u8a66\u3057\u305f\u3068\u3053\u308d\u3001\u4e0d\u53ef\u89e3\u306a\u52d5\u4f5c\u3092\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u305f\u3068\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306f<code>pyrefly infer<\/code>\u30b3\u30de\u30f3\u30c9\u30922\u56de\u5b9f\u884c\u3057\u306a\u3044\u3068<code>add()<\/code>\u95a2\u6570\u306e\u5f15\u6570\u3068\u623b\u308a\u5024\u4e21\u65b9\u306b\u578b\u30d2\u30f3\u30c8\u304c\u3064\u3044\u3066\u304f\u308c\u307e\u305b\u3093\u3002<\/p>\n<figure class=\"f-pre-code\" id=\"ghcivhkweb\"><figcaption><code>pyrefly infer<\/code>\u30b3\u30de\u30f3\u30c9\u306e\u6319\u52d5\u304c\u304a\u304b\u3057\u3044\u4f8b<\/figcaption><pre id=\"gh7yYeM_Sn\"><code class=\"language-python\"><span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">add<\/span>(<span class=\"hljs-params\">a, b<\/span>):\n    <span class=\"hljs-keyword\">return<\/span> a + b\n\n\n<span class=\"hljs-built_in\">print<\/span>(add(<span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">3<\/span>))\n<\/code><\/pre>\n<\/figure>\n<figure class=\"f-pre-samp\" id=\"gh17S4zmML\"><figcaption><code>pyrefly infer<\/code>\u30b3\u30de\u30f3\u30c9\u30922\u56de\u5b9f\u884c\u3057\u306a\u3044\u3068\u5168\u90e8\u306e\u578b\u30d2\u30f3\u30c8\u304c\u3064\u304b\u306a\u3044<\/figcaption><pre id=\"ghbF1U_r_N\"><samp>$ pyrefly infer example_without_typehints.py  # 1\u56de\u76ee\u306e\u5b9f\u884c\n INFO 0 errors\n$ cat example_without_typehints.py  # 1\u56de\u76ee\u306f\u5f15\u6570\u306b\u3057\u304b\u578b\u30d2\u30f3\u30c8\u304c\u3064\u304b\u306a\u3044\ndef add(a: int, b: int):\n    return a + b\n\n\nprint(add(2, 3))\n$ pyrefly infer example_without_typehints.py  # 2\u56de\u76ee\u306e\u5b9f\u884c\n INFO 0 errors\n$ cat example_without_typehints.py  # 2\u56de\u76ee\u3067\u623b\u308a\u5024\u306b\u3082\u578b\u30d2\u30f3\u30c8\u304c\u3064\u304f\ndef add(a: int, b: int) -&gt; int:\n    return a + b\n\n\nprint(add(2, 3))\n<\/samp><\/pre>\n<\/figure>\n<h2 id=\"gha3dLYHNS\">\u6700\u5f8c\u306b<\/h2>\n<p id=\"gh8kXvnEvX\">Pyrefly\u306f<wbr\/>\u300cPyrefly\u3068\u4ed6\u306e\u578b\u30c1\u30a7\u30c3\u30ab\u30fc\u306e\u901f\u5ea6\u3092\u6bd4\u8f03\u3059\u308b\u300d<wbr\/>\u3067\u3082\u7d39\u4ecb\u3057\u305fty\u3068\u540c\u3058\u304fRust\u3067\u4f5c\u3089\u308c\u305f\u578b\u30c1\u30a7\u30c3\u30ab\u30fc\u3067\u3042\u308a\u3001\u305d\u306e\u305f\u3081\u4e21\u8005\u304c\u6bd4\u8f03\u5bfe\u8c61\u3068\u3057\u3066\u53d6\u308a\u4e0a\u3052\u3089\u308c\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u3069\u3061\u3089\u3082\u767a\u5c55\u9014\u4e0a\u306e\u30c4\u30fc\u30eb\u3067\u3042\u308b\u305f\u3081\u3001\u4eca\u5f8c\u4e3b\u6d41\u306b\u306a\u308b\u304b\u306f\u4e0d\u900f\u660e\u3067\u3059\u3002\u4eca\u5f8c\u306e\u52d5\u5411\u306b\u6ce8\u76ee\u3057\u3066\u3001\u79c1\u305f\u3061\u306e\u958b\u767a\u306b\u4e0a\u624b\u304f\u53d6\u308a\u5165\u308c\u3066\u3044\u304d\u305f\u3044\u3067\u3059\u306d\u3002<\/p>\n<\/p><\/div>\n<p><script async src=\"\/\/platform.twitter.com\/widgets.js\" 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[&hellip;]","protected":false},"author":1,"featured_media":26465,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-26464","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hatena-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Rust\u3067\u66f8\u304b\u308c\u305f\u9ad8\u901fPython\u578b\u30c1\u30a7\u30c3\u30ab\u30fc\u300cPyrefly\u300d\u306e\u7d39\u4ecb | gihyo.jp - \u30dd\u30b1\u30b3\u30f3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gihyo.jp\/article\/2025\/12\/monthly-python-2512\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" 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