{"id":240858,"date":"2022-04-18T09:07:01","date_gmt":"2022-04-18T08:07:01","guid":{"rendered":"https:\/\/blog.jetbrains.com\/blog\/2022\/03\/30\/beamsearch-in-code-generation\/"},"modified":"2022-04-18T09:08:45","modified_gmt":"2022-04-18T08:08:45","slug":"beamsearch-in-code-generation","status":"publish","type":"blog","link":"https:\/\/blog.jetbrains.com\/zh-hans\/blog\/2022\/04\/18\/beamsearch-in-code-generation\/","title":{"rendered":"\u4ee3\u7801\u751f\u6210\u4e2d\u7684 BeamSearch"},"content":{"rendered":"\n<p>\u5728<a href=\"https:\/\/blog.jetbrains.com\/zh-hans\/blog\/2022\/03\/21\/looking-at-python-through-the-eyes-of-a-neural-net\/\">\u4e0a\u4e00\u7bc7<\/a>\u4e13\u95e8\u8ba8\u8bba\u6574\u884c\u4ee3\u7801\u8865\u5168\u7684\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u63a2\u8ba8\u4e86\u6574\u884c\u8865\u5168\u63d2\u4ef6\u7684\u795e\u7ecf\u7f51\u7edc\u7528\u4e8e Python \u7684\u8bcd\u6c47\u8868\u3002\u00a0\u7136\u800c\uff0c\u4ec5\u4ec5 16384 \u4e2a\u8bcd\u4f8b\uff0c\u5982\u00a0<code>self.<\/code>\u3001<code>or<\/code>\u3001<code>s.append(<\/code>\u3001<code>return value<\/code>\u00a0\u548c\u6587\u7ae0\u4e2d\u63cf\u8ff0\u7684\u5176\u4ed6\u8bcd\u4f8b\uff0c\u751a\u81f3\u4e0d\u8db3\u4ee5\u751f\u6210\u4e00\u884c\u3002\u00a0\u6211\u4eec\u9700\u8981\u4e00\u79cd\u80fd\u591f\u5c06\u8fd9\u4e9b\u8bcd\u4f8b\u7ec4\u5408\u8d77\u6765\u7f16\u5199\u4ee3\u7801\u5757\u7684\u65b9\u5f0f\u3002\u00a0\u672c\u6587\u5c06\u8ba8\u8bba\u7b97\u6cd5\u5982\u4f55\u4f7f\u7528\u8bcd\u6c47\u8868\u7684\u5143\u7d20\u6784\u9020\u66f4\u957f\u7684\u77ed\u8bed\u3002<\/p>\n\n\n\n<p>\u9996\u5148\u662f\u81ea\u56de\u5f52\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u81ea\u56de\u5f52<\/h2>\n\n\n\n<p>\u6587\u672c\uff08\u548c\u4ee3\u7801\uff09\u751f\u6210\u57fa\u4e8e\u591a\u4e2a\u6982\u5ff5\uff0c\u81ea\u56de\u5f52\u662f\u5176\u4e2d\u4e4b\u4e00\u3002&nbsp;\u673a\u5668\u5b66\u4e60\u7b97\u6cd5\u5c06\u73b0\u6709\u6587\u672c\u6216\u5176\u4e2d\u7684\u4e00\u90e8\u5206\u4f5c\u4e3a\u8f93\u5165\uff0c\u9884\u6d4b\u8bcd\u6c47\u8868\u4e2d\u5404\u4e2a\u8bcd\u4f8b\u6210\u4e3a\u6587\u672c\u4e2d\u4e0b\u4e00\u4e2a\u8bcd\u4f8b\u7684\u6982\u7387\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e9b\u6982\u7387\u7684\u9884\u6d4b\u7531\u57fa\u4e8e Transformer \u7684\u795e\u7ecf\u7f51\u7edc\u6a21\u578b\u5b8c\u6210\u3002&nbsp;\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u628a\u8fd9\u4e2a\u6a21\u578b\u89c6\u4e3a\u4e00\u4e2a\u9ed1\u76d2\uff0c\u5b83\u4f1a\u63a5\u6536\u4e00\u7cfb\u5217\u8bcd\u4f8b\u5e76\u8fd4\u56de\u4e0b\u4e00\u4e2a\u53ef\u80fd\u8bcd\u4f8b\u7684\u6982\u7387\u3002&nbsp;\u8bb8\u591a\u5173\u4e8e\u795e\u7ecf\u7f51\u7edc Transformer \u8fd0\u4f5c\u65b9\u5f0f\u7684\u6587\u7ae0\u90fd\u89e3\u91ca\u4e86\u8fd9\u4e2a\u9ed1\u76d2\u7684\u5185\u90e8\u539f\u7406\u3002&nbsp;\u4f8b\u5982\uff0c\u6709\u5173 Transformer \u7684<a href=\"https:\/\/arxiv.org\/abs\/1706.03762\" target=\"_blank\" rel=\"noopener\">\u539f\u59cb\u7814\u7a76\u8bba\u6587<\/a>\u6216\u4e13\u95e8\u9488\u5bf9 GPT-2 \u7684<a href=\"https:\/\/jalammar.github.io\/illustrated-gpt2\/\" target=\"_blank\" rel=\"noopener\">\u63d2\u56fe\u8bf4\u660e<\/a>\u3002<\/p>\n\n\n\n<p>\u672c\u6587\u4e0d\u6d89\u53ca Transformer \u7684\u5b9e\u73b0\u7ec6\u8282\u3002&nbsp;\u6211\u4eec\u5c06\u63a2\u8ba8\u7684\u662f\u83b7\u5f97\u6982\u7387\u540e\u7b97\u6cd5\u7684\u4f5c\u7528\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u53d6\u6700\u53ef\u80fd\u7684\u8bcd\u4f8b\uff0c\u5c06\u5176\u4f5c\u4e3a\u4e0b\u4e00\u6b21\u63a8\u65ad\u8fed\u4ee3\u7684\u4e0a\u4e0b\u6587\u7684\u4e00\u90e8\u5206\u53cd\u9988\u7ed9\u7b97\u6cd5\u3002&nbsp;\u8fd9\u4f7f\u6211\u4eec\u80fd\u591f\u9884\u6d4b\u5e8f\u5217\u4e2d\u7684\u7b2c\u4e8c\u4e2a\u8bcd\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u518d\u6b21\u5c06\u5176\u7528\u4f5c\u4e0a\u4e0b\u6587\u7684\u4e00\u90e8\u5206\u3002&nbsp;\u56e0\u6b64\uff0c\u53ea\u6709\u7b2c\u4e00\u6b21\u8fed\u4ee3\u4f7f\u7528\u7528\u6237\u63d0\u4f9b\u7684\u8f93\u5165\uff0c\u6240\u6709\u540e\u7eed\u8fed\u4ee3\u90fd\u5c06\u8f93\u5165\u4e0e\u524d\u9762\u6b65\u9aa4\u7684\u7ed3\u679c\u76f8\u7ed3\u5408\u3002<\/p>\n\n\n\n<p>\u9996\u5148\uff0c\u5728\u4eba\u5de5\u81ea\u7136\u8bed\u8a00\u793a\u4f8b\u4e0a\u8fd0\u884c\u8fd9\u4e9b\u6b65\u9aa4\u3002&nbsp;William Blake \u7684\u201cThe Tyger\u201d\u5c06\u662f\u6211\u4eec\u7528\u6765\u9884\u6d4b\u7684\u6587\u672c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"1200\" height=\"675\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2022\/03\/tyger1.gif\" alt=\"An animated image that shows the prediction of the two first paragraphs of &quot;the Tyger&quot; by William Blake.\" class=\"wp-image-236754\"\/><\/figure>\n\n\n\n<p>\u6b64\u793a\u4f8b\u8bf4\u660e\u81ea\u56de\u5f52\u8fc7\u7a0b\u53ef\u80fd\u662f\u65e0\u9650\u7684\u3002&nbsp;\u5728\u6587\u672c\u672b\u5c3e\u6dfb\u52a0\u66f4\u591a\u8bcd\u4f8b\uff0c\u518d\u5c06\u4e0a\u4e0b\u6587\u7a97\u53e3\u5411\u524d\u79fb\u52a8\uff0c\u8fbe\u5230\u4e86\u539f\u59cb\u6587\u672c\u7684\u4efb\u4f55\u90e8\u5206\u90fd\u6ca1\u6709\u7528\u4f5c\u8f93\u5165\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u8f93\u5165\u5f88\u5c11\u662f\u8bad\u7ec3\u96c6\u4e2d\u5143\u7d20\u7684\u91cd\u590d\u3002&nbsp;\u8fd9\u610f\u5473\u7740\u4e0d\u90a3\u4e48\u6e05\u6670\u7684\u8f93\u51fa\uff0c\u5e76\u4e14\u751f\u6210\u6709\u610f\u4e49\u7684\u957f\u6587\u672c\u7684\u5c1d\u8bd5\u4f1a\u5bfc\u81f4\u8d28\u91cf\u8fdc\u4f4e\u4e8e Blake \u7684\u8bd7\u3002<\/p>\n\n\n\n<p>\u597d\u5728\u6211\u4eec\u7684\u76f4\u63a5\u4efb\u52a1\u662f\u53ea\u751f\u6210\u4e00\u5c0f\u6bb5\u4ee3\u7801\uff0c\u56e0\u6b64\u8fc7\u7a0b\u9ed8\u8ba4\u4e3a\u4e94\u6b21\u8fed\u4ee3\u800c\u4e0d\u662f\u65e0\u9650\u6b21\u3002&nbsp;\u6211\u4eec\u7684\u6a21\u578b\u6700\u591a\u9700\u8981 384 \u4e2a\u4e0a\u4e0b\u6587\u8bcd\u4f8b\uff0c\u56e0\u6b64\u5728\u751f\u6210\u8fd9\u4e94\u4e2a\u65b0\u8bcd\u4f8b\u65f6\uff0c\u4e0d\u4f1a\u51fa\u73b0\u4e22\u5931\u539f\u59cb\u8f93\u5165\u7684\u98ce\u9669\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ed3\u679c\u591a\u6837\u6027\u548c\u8ba1\u7b97\u590d\u6742\u6027<\/h2>\n\n\n\n<p>\u76f4\u63a5\u7684\u81ea\u56de\u5f52\u6709\u4e00\u4e2a\u95ee\u9898\uff1a\u5b83\u53ea\u751f\u6210\u4e00\u4e2a\u8bcd\u4f8b\u94fe\u3002&nbsp;\u5f53\u6a21\u578b\u9ad8\u5ea6\u81ea\u4fe1\u5e76\u4e14\u9664\u9876\u90e8\u7ed3\u679c\u4e4b\u5916\u7684\u6240\u6709\u7ed3\u679c\u7684\u7ec4\u5408\u6982\u7387\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u65f6\uff0c\u8fd9\u53ef\u80fd\u8fd8\u597d\u3002&nbsp;\u201cThe Tyger\u201d\u5c31\u662f\u8fd9\u79cd\u60c5\u51b5\uff0c\u5728\u5b66\u6821\u91cc\u80cc\u8fc7\u8fd9\u9996\u8bd7\u7684\u4eba\u90fd\u4f1a\u7acb\u5373\u60f3\u5230\u4e0b\u4e00\u4e2a\u5355\u8bcd\u3002<\/p>\n\n\n\n<p>\u5728\u5b9e\u8df5\u4e2d\uff0c\u8bb8\u591a\u5ef6\u7eed\u901a\u5e38\u662f\u53ef\u80fd\u7684\uff0c\u56e0\u6b64\u6211\u4eec\u60f3\u8981\u63a2\u7d22\u5927\u91cf\u7684\u9009\u9879\u3002&nbsp;\u8fd9\u5c31\u662f\u6307\u6570\u590d\u6742\u6027\u53d1\u6325\u4f5c\u7528\u7684\u5730\u65b9\u3002&nbsp;\u6211\u4eec\u7684\u8bcd\u6c47\u8868\u5305\u542b 2<sup>14<\/sup>&nbsp;== 16384 \u4e2a\u8bcd\u4f8b\uff0c\u7b97\u6cd5\u63d0\u4f9b\u4e86\u6bcf\u4e2a\u8bcd\u4f8b\u7684\u6982\u7387\u3002&nbsp;\u4e0b\u4e00\u6b65\uff0c\u8003\u8651\u5230\u4e24\u4e2a\u8bcd\u4f8b\u7684\u7ec4\u5408\uff0c\u6211\u4eec\u6709\u4e86 2<sup>14<\/sup>&nbsp;* 2<sup>14<\/sup>&nbsp;== 2<sup>28<\/sup>&nbsp;\u4e2a\u9009\u9879\u3002&nbsp;\u8981\u201c\u5199\u201d\u4e00\u4e2a\u7531\u4e94\u4e2a\u8bcd\u4f8b\u7ec4\u6210\u7684\u5e8f\u5217\uff0c\u6211\u4eec\u9700\u8981\u4ece 2<sup>70<\/sup>&nbsp;\u4e2a\u53d8\u4f53\u4e2d\u8fdb\u884c\u9009\u62e9\uff0c\u8fd9\u663e\u7136\u4e0d\u73b0\u5b9e\u3002&nbsp;\u641c\u7d22\u6811\u7684\u5206\u652f\u592a\u591a\uff0c\u65e0\u6cd5\u5b8c\u5168\u904d\u5386\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u9700\u8981\u60f3\u529e\u6cd5\u8fdb\u884c\u5bbd\u5ea6\u4f18\u5148\u641c\u7d22\uff0c\u4e5f\u8981\u9650\u5236\u6211\u4eec\u5728\u6811\u7684\u6bcf\u4e00\u5c42\u4e0a\u82b1\u8d39\u7684\u8ba1\u7b97\u80fd\u529b\u3002&nbsp;\u6709\u51e0\u79cd\u53ef\u80fd\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u5176\u4e2d\u4e00\u4e2a\u662f\u6838\u91c7\u6837 (Nucleus Sampling)\u3002&nbsp;\u4e0d\u8fc7\uff0c\u6211\u4eec\u9009\u62e9\u7684\u662f BeamSearch \u7b97\u6cd5\u3002&nbsp;\u987e\u540d\u601d\u4e49\uff0c\u6211\u4eec\u4f7f\u7528\u56fa\u5b9a\u5bbd\u5ea6\u7684\u7c7b\u6fc0\u5149\u5149\u675f\u63a2\u7d22\u9886\u57df\u3002<\/p>\n\n\n\n<p>\u8fd9\u57fa\u672c\u610f\u5473\u7740\u5728\u6811\u7684\u6bcf\u4e2a\u7ea7\u522b\u4e0a\u9009\u62e9\u56fa\u5b9a\u6570\u91cf\u7684\u5206\u652f\u8fdb\u884c\u8fdb\u4e00\u6b65\u63a2\u7d22\u3002&nbsp;\u6211\u4eec\u53ea\u7559\u4e0b\u76ee\u524d\u770b\u8d77\u6765\u6700\u6709\u53ef\u80fd\u7684\u5206\u652f\u5e76\u5207\u65ad\u5176\u4ed6\u6240\u6709\u5185\u5bb9\u3002&nbsp;\u6765\u770b\u770b\u5b83\u662f\u5982\u4f55\u4e0e Python \u8bcd\u4f8b\u4e00\u8d77\u5de5\u4f5c\u7684\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">BeamSearch<\/h2>\n\n\n\n<p>\u5047\u8bbe\u6211\u4eec\u5f00\u59cb\u5b9e\u73b0\u4e00\u4e2a Python \u51fd\u6570\u6765\u8ba1\u7b97\u7b2c n&nbsp;\u4e2a\u6590\u6ce2\u90a3\u5951\u6570\u3002&nbsp;\u6211\u4eec\u4f7f\u7528\u7684\u793a\u4f8b\u53ef\u80fd\u4e0d\u662f AI \u80fd\u529b\u7684\u6700\u9c9c\u660e\u5c55\u793a\uff0c\u4f46\u5b83\u80fd\u591f\u8868\u73b0\u6211\u4eec\u5728\u53d6\u81ea\u795e\u7ecf\u7f51\u7edc\u7684\u96be\u4ee5\u89e3\u91ca\u7684\u6982\u7387\u7ed3\u679c\u4e4b\u4e0a\u8fdb\u884c\u7684\u6784\u5efa\u3002&nbsp;\u9996\u5148\u662f\u68c0\u67e5\u8f93\u5165\u503c\u662f\u5426\u4e3a\u8d1f\u5e76\u629b\u51fa\u5f02\u5e38\uff08<em>\u5f15\u53d1\u9519\u8bef<\/em>\uff09\u3002&nbsp;\u8fd0\u4f5c\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>n = int(input())\n\ndef fib(n):\n    if n &lt; 0:\n        rai| <\/code>&lt;- caret here<\/pre>\n\n\n\n<p>\u4e3a\u4e86\u4e86\u89e3\u7b97\u6cd5\u5982\u4f55\u6784\u6210\u5176\u5efa\u8bae\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u63d2\u4ef6\u5f00\u53d1\u8005\u5728\u8c03\u8bd5\u6a21\u5f0f\u4e0b\u53ef\u7528\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u7684\u5149\u675f\u6709\u516d\u4e2a\u9879\u5bbd\uff0c\u8fd9\u610f\u5473\u7740\u7b97\u6cd5\u5728\u6bcf\u4e00\u6b65\u4ec5\u9009\u62e9\u516d\u4e2a\u6700\u53ef\u80fd\u7684\u8bcd\u4f8b\u7ec4\u5408\u3002&nbsp;\u6211\u4eec\u5c06\u5b83\u4eec\u7ed8\u5236\u4e3a\u56fe\u8868\u3002&nbsp;\u884c\u5bbd\u5c06\u8868\u793a\u8fed\u4ee3\u4e2d\u5ef6\u7eed\u7684\u76f8\u5bf9\u6982\u7387\u3002<\/p>\n\n\n\n<p>\u7b97\u6cd5\u7684\u7b2c\u4e00\u6b65\u7ed9\u51fa\u4e86\u4ee5\u4e0b\u7ed3\u679c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"2800\" height=\"1575\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2022\/03\/Slide1-1-2800x1575.png\" alt=\"A tree view of six options to represent and continue the line starting with two levels of indentation and the string &quot;rai&quot;.\" class=\"wp-image-236686\"\/><figcaption>\u6709\u4e24\u9879\u9700\u8981\u989d\u5916\u6ce8\u91ca\uff1a<code>&nbsp; r<\/code>&nbsp;\u548c\u5e95\u90e8\u7684\u7a7a\u9ec4\u8272\u77e9\u5f62\uff0c\u5b83\u7684\u6982\u7387\u6700\u9ad8\u3002<br>\u8fd9\u662f\u4ec0\u4e48\uff1f<\/figcaption><\/figure>\n\n\n\n<p>\u7528\u6237\u4f1a\u5728\u4ee3\u7801\u4e2d\u7684\u4efb\u4f55\u5730\u65b9\u8c03\u7528\u8865\u5168\u7a97\u53e3\uff0c\u6211\u4eec\u9700\u8981\u627e\u5230\u8868\u793a<em>\u524d\u7f00<\/em>\u7684\u6700\u4f73\u65b9\u5f0f\uff0c\u5373\u7528\u8bcd\u6c47\u8868\u8bcd\u4f8b\u6765\u8868\u793a\u884c\u5f00\u59cb\u548c\u8c03\u7528\u4f4d\u7f6e\u4e4b\u95f4\u7684\u5e8f\u5217\u3002&nbsp;\u6709\u65f6\u7b97\u6cd5\u53ef\u4ee5\u7528\u5b83\u8003\u8651\u7684\u7b2c\u4e00\u4e2a\u8bcd\u4f8b\u8986\u76d6\u6574\u4e2a\u524d\u7f00\uff0c\u4f46\u6709\u65f6\u9700\u8981\u4e24\u4e2a\u6216\u66f4\u591a\u8bcd\u4f8b\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u60f3\u7ee7\u7eed\u7531\u4e24\u4e2a\u7f29\u8fdb\u548c&nbsp;<code>rai<\/code>&nbsp;\u7ec4\u6210\u7684\u884c\u3002&nbsp;\u6240\u4ee5\u4e0a\u9762\u63d0\u5230\u7684\u4e24\u4e2a\u5947\u602a\u7684\u9879\u8bd5\u56fe\u4ece\u7f29\u8fdb+\u7f29\u8fdb+&nbsp;<code>r<\/code>&nbsp;\u6216\u8005\u7f29\u8fdb+\u7f29\u8fdb\u5f00\u59cb\uff0c\u8fd9\u4e24\u4e2a<strong>\u90fd\u662f<\/strong>\u8bcd\u6c47\u8868\u4e2d\u7684\u8bcd\u4f8b\u3002<\/p>\n\n\n\n<p>\u5230\u73b0\u5728\u4e3a\u6b62\u90fd\u6ca1\u95ee\u9898\u3002&nbsp;\u7ee7\u7eed\u4e0b\u4e00\u6b65\u3002&nbsp;\u6211\u4eec\u5c06\u5728\u9ec4\u8272\u548c\u6d45\u84dd\u8272\u4e4b\u95f4\u6765\u56de\u5207\u6362\uff0c\u9ad8\u4eae\u663e\u793a\u7528\u4e8e\u6784\u6210\u5efa\u8bae\u7684\u8bcd\u4f8b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"2800\" height=\"1575\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2022\/03\/Slide2-2800x1575.png\" alt=\"A tree view of the second level of the search tree involved in generating the code.\" class=\"wp-image-236697\"\/><figcaption>\u8fd9\u4e00\u6b65\u6709\u4e09\u4e2a\u6709\u8da3\u7684\u89c2\u5bdf\u7ed3\u679c\uff1a<\/figcaption><\/figure>\n\n\n\n<ol><li>\u6709\u8bb8\u591a\u4ee5\u7f29\u8fdb+\u7f29\u8fdb\u5f00\u5934\u7684\u9009\u9879\uff0c\u56e0\u6b64\u5728\u7b2c\u4e00\u6b21\u8fed\u4ee3\u65f6\u5ef6\u7eed\u7684\u53ef\u80fd\u6027\u5f88\u9ad8\u3002&nbsp;\u4f46\u662f\uff0c\u8fd9\u4e9b\u9009\u9879\u4e2d\u6ca1\u6709\u4e00\u4e2a\u5355\u72ec\u770b\u8d77\u6765\u8db3\u4ee5\u51fb\u8d25\u4ece\u5176\u4ed6\u8d77\u59cb\u8bcd\u4f8b\u6784\u5efa\u7684\u5ef6\u7eed\u3002&nbsp;\u6240\u4ee5\u641c\u7d22\u505c\u6b62\u63a2\u7d22\u8fd9\u4e00\u884c\uff0c\u6211\u4eec\u7528\u53c9\u53f7\u6807\u8bb0\uff0c\u5e76\u5e26\u4e0a\u5176\u4ed6\u4e24\u4e2a\u9009\u9879\u3002<\/li><li>\u6709\u65f6\u8f83\u957f\u7684\u5b57\u7b26\u4e32\u53ef\u4ee5\u7528\u4e00\u4e2a\u8bcd\u4f8b\u6765\u8868\u793a\uff0c\u800c\u5b83\u7684\u5b50\u5b57\u7b26\u4e32\u9700\u8981\u4e24\u4e2a\u6216\u66f4\u591a\u8bcd\u4f8b\u3002&nbsp;\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4ece\u4e0a\u4e00\u6b65\u83b7\u5f97\u4e86 raise ValueError(\u201c\uff0c\u4f46 raise ValueError \u76f4\u5230\u5f53\u524d\u6b65\u9aa4\u624d\u53ef\u7528\u3002<\/li><li>\u9519\u8bef\u6d88\u606f\u6587\u672c\u770b\u8d77\u6765\u90fd\u975e\u5e38\u6709\u5e0c\u671b\u3002&nbsp;\u7136\u800c\uff0c\u4e0b\u4e00\u6b65\u5c31\u5168\u9519\u4e86\uff1a<\/li><\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"2800\" height=\"1575\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2022\/03\/Slide3-2800x1575.png\" alt=\"A tree view of the third level of the search tree.\" class=\"wp-image-236708\"\/><figcaption>\u5982\u679c\u67e5\u770b\u4e0a\u56fe\uff0c\u60a8\u53ef\u80fd\u4f1a\u53d1\u73b0\u6709\u4e94\u4e2a\u5efa\u8bae\u800c\u4e0d\u662f\u516d\u4e2a\uff0c\u5e76\u4e14\u5b58\u5728\u4e00\u4e2a\u6211\u4eec\u4e4b\u524d\u6ca1\u6709\u8ba8\u8bba\u8fc7\u7684\u590d\u9009\u6807\u8bb0\u3002<br>\u8fd9\u4e24\u4ef6\u4e8b\u662f\u76f8\u5173\u7684\u3002\u7b97\u6cd5\u6ce8\u610f\u5230&nbsp;<code>raise<\/code>&nbsp;\u662f\u4e00\u4e2a\u8bcd\u6cd5\u6b63\u786e\u7684\u5757\uff0c\u56e0\u6b64\u5b83\u53ef\u4ee5\u505c\u6b62\u63a2\u7d22\u8fd9\u4e00\u884c\u3002\u6b64\u5206\u6790\u8ba1\u5165\u6bcf\u4e2a\u6b65\u9aa4\u7684\u516d\u4e2a\u9879\u3002\u56e0\u6b64\uff0c\u53e6\u5916\u53ea\u6709\u4e94\u4e2a\u9009\u9879\u3002<\/figcaption><\/figure>\n\n\n\n<p>\u7136\u800c\uff0c\u6211\u4eec\u5728\u8fd9\u4e00\u6b65\u4e5f\u4e22\u5931\u4e86\u6240\u6709\u6709\u5e0c\u671b\u7684\u9519\u8bef\u6d88\u606f\uff0c\u4f46\u662f\u53e6\u4e00\u4e2a\u6811\u5206\u652f\u751f\u6210\u4e86&nbsp;<code>raise ValueError()<\/code>\uff0c\u8fd9\u662f\u6b21\u4f18\u7684\u3002&nbsp;\u6211\u4eec\u8fd8\u6709\u4e24\u4e2a\u6b65\u9aa4\u53ef\u4ee5\u63a2\u7d22\u5176\u4ed6\u6982\u7387\u3002&nbsp;Rail\uff1f&nbsp;Rain\uff1f&nbsp;Rais\uff1f&nbsp;\u6211\u4eec\u6765\u770b\u770b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"2800\" height=\"1575\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2022\/03\/Slide4-2800x1575.png\" alt=\"A tree view of the fourth level of the search tree.\" class=\"wp-image-236720\"\/><figcaption>\u7ed3\u679c\u8868\u660e\uff0c<code>raise ValueError(\u201cn \/\/<\/code>&nbsp;\u662f\u4e00\u4e2a\u660e\u663e\u7684\u6b7b\u80e1\u540c\uff0c\u4f46\u795e\u7ecf\u7f51\u7edc\u5374\u4e0d\u8fd9\u4e48\u8ba4\u4e3a\uff0c\u5e76\u7ee7\u7eed\u6784\u5efa\u8fd9\u4e00\u884c\u3002<br>\u4ece\u597d\u7684\u65b9\u9762\u6765\u8bf4\uff0c<code>raise ValueError()<\/code>&nbsp;\u88ab\u9009\u4e2d\u4e86\u3002\u7b97\u6cd5\u6709\u4e94\u884c\u8981\u5728\u6700\u540e\u4e00\u6b65\u4e2d\u5206\u6790\u3002<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"2800\" height=\"1575\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2022\/03\/Slide5-2800x1575.png\" alt=\"A tree view of the fifth level of the search tree.\" class=\"wp-image-236731\"\/><figcaption>\u731c\u6240\u6709\u4eba\u90fd\u50cf\u6211\u4e00\u6837\u8ba4\u4e3a&nbsp;<code>rainbo<\/code>&nbsp;\u4f1a\u5bfc\u5411&nbsp;<code>rainbow<\/code>\u3002<br>\u6ca1\u4eba\u80fd\u60f3\u5230\u7ed3\u679c\u4f1a\u662f&nbsp;<code>rainbomb<\/code>\u3002\u5e78\u8fd0\u7684\u662f\uff0c\u7b97\u6cd5\u5e76\u6ca1\u6709\u8ba4\u4e3a\u8fd9\u4e2a\u9009\u9879\u7684\u53ef\u80fd\u6027\u8db3\u591f\u5411\u7528\u6237\u5c55\u793a\uff08\u672c\u6587\u8bfb\u8005\u9664\u5916\uff09\u3002<\/figcaption><\/figure>\n\n\n\n<p>\u5728\u751f\u6210\u6240\u6709\u53ef\u80fd\u7684\u5efa\u8bae\u540e\uff0c\u7b97\u6cd5\u4f1a\u6309\u6982\u7387\u5bf9\u5176\u6392\u5e8f\u3002&nbsp;\u5728\u4e0d\u4e45\u7684\u5c06\u6765\uff0c\u6211\u4eec\u8ba1\u5212\u5f00\u59cb\u589e\u5f3a\u76ee\u6807\u7f16\u7a0b\u8bed\u8a00\u7684\u8bcd\u6cd5\u5b8c\u6574\u7ed3\u6784\uff0c\u4f7f\u4e2d\u62ec\u53f7\u5e73\u8861\u5e76\u4e14\u5173\u952e\u5b57\u4e0d\u4f1a\u88ab\u62c6\u5206\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\uff0c\u6211\u4eec\u4e0d\u60f3\u5b8c\u5168\u7981\u6b62\u90e8\u5206\u4e0d\u6b63\u786e\u7684\u5efa\u8bae\u3002&nbsp;\u5b83\u4eec\u53ef\u80fd\u53ea\u662f\u7a0d\u5fae\u4e0d\u6b63\u786e\uff0c\u8ba9\u7528\u6237\u63a5\u53d7\u5e76\u7ee7\u7eed\u7f16\u8f91\u53ef\u80fd\u662f\u6709\u76ca\u7684\u3002<\/p>\n\n\n\n<p>\u7528\u4e8e\u7f16\u5199\u6b64\u8bf4\u660e\u7684\u7279\u5b9a\u5f39\u51fa\u7a97\u53e3\u5305\u542b\u4ee5\u4e0b\u5185\u5bb9\uff08\u5982\u679c\u60a8\u8fd0\u884c\u7684\u662f\u76f8\u540c\u7684\u4ee3\u7801\uff0c\u60a8\u770b\u5230\u7684\u5185\u5bb9\u53ef\u80fd\u4f1a\u6709\u6240\u4e0d\u540c\uff0c\u4e3b\u8981\u53d6\u51b3\u4e8e\u53ef\u7528\u7684\u5904\u7406\u5668\u8d44\u6e90\uff09\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"2800\" height=\"802\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2022\/03\/Finalcompletion-2800x802.png\" alt=\"A code completion pop-up window that contains three suggestions from full line code completion.\nThe first suggestion is to assign false to a variable named raising.\nThe second suggestion is to assign true to a variable named raising.\nThe third suggestion is to raise a value error.\" class=\"wp-image-236742\"\/><\/figure>\n\n\n\n<p>\u8fd9\u770b\u8d77\u6765\u53ef\u80fd\u4e0d\u662f\u5168\u9762\u7684\u6210\u529f\uff0c\u4f46\u5bf9\u4e8e\u5b9e\u73b0&nbsp;<code>fib(n)<\/code>&nbsp;\u51fd\u6570\u7684\u5f00\u53d1\u8005\u6765\u8bf4\u4ecd\u7136\u662f\u4e00\u4e2a\u6709\u7528\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n<p>BeamSearch \u7b97\u6cd5\u662f\u4e00\u79cd\u76f8\u5f53\u7b80\u5355\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u9650\u5236\u6811\u6216\u56fe\u8868\u4e2d\u7684\u5bbd\u5ea6\u4f18\u5148\u641c\u7d22\u7684\u8ba1\u7b97\u590d\u6742\u5ea6\u3002&nbsp;\u540c\u65f6\uff0c\u5b83\u786e\u4fdd\u4e86\u7ed3\u679c\u4e4b\u95f4\u4e00\u5b9a\u7a0b\u5ea6\u7684\u591a\u6837\u6027\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4e86\u8fdb\u4e00\u6b65\u6539\u8fdb\u6574\u884c\u8865\u5168\u2026<\/h2>\n\n\n\n<p>\u2026\u6211\u4eec\u9700\u8981\u7528\u6237\u63d0\u4f9b\u66f4\u591a\u53cd\u9988\u3002&nbsp;\u8bf7\u8bd5\u7528&nbsp;<a href=\"https:\/\/plugins.jetbrains.com\/plugin\/14823-full-line-code-completion\" target=\"_blank\" rel=\"noopener\">Python \u7684\u6574\u884c\u4ee3\u7801\u8865\u5168\u63d2\u4ef6<\/a>\uff0c\u628a\u60a8\u7684\u60f3\u6cd5\u544a\u8bc9\u6211\u4eec\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u672c\u535a\u6587\u82f1\u6587\u539f\u4f5c\u8005\uff1a<\/p>\n\n\n    <div class=\"about-author \">\n        <div class=\"about-author__box\">\n            <div class=\"row\">\n                <div class=\"about-author__box-img\">\n                    <img decoding=\"async\" src=\"https:\/\/secure.gravatar.com\/avatar\/?s=200&#038;r=g\" width=\"200\" height=\"200\" alt=\"\" loading=\"lazy\"  class=\"avatar avatar-200 wp-user-avatar wp-user-avatar-200 photo avatar-default\">\n                <\/div>\n                <div class=\"about-author__box-text\">\n                                                        <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n","protected":false},"author":1297,"featured_media":236772,"comment_status":"closed","ping_status":"closed","template":"","categories":[623],"tags":[603,3252],"cross-post-tag":[6951,6419],"acf":[],"_links":{"self":[{"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/blog\/240858"}],"collection":[{"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/types\/blog"}],"author":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/users\/1297"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/comments?post=240858"}],"version-history":[{"count":5,"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/blog\/240858\/revisions"}],"predecessor-version":[{"id":240866,"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/blog\/240858\/revisions\/240866"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/media\/236772"}],"wp:attachment":[{"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/media?parent=240858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/categories?post=240858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/tags?post=240858"},{"taxonomy":"cross-post-tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/zh-hans\/wp-json\/wp\/v2\/cross-post-tag?post=240858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}