{"id":1749,"date":"2024-05-28T05:46:14","date_gmt":"2024-05-28T05:46:14","guid":{"rendered":"https:\/\/www.nicekj.com\/?p=1749"},"modified":"2024-05-28T05:46:46","modified_gmt":"2024-05-28T05:46:46","slug":"langchainchutanweinideaiyingyongzhiludaohang","status":"publish","type":"post","link":"https:\/\/www.nicekj.com\/langchainchutanweinideaiyingyongzhiludaohang.html","title":{"rendered":"LangChain\u521d\u63a2\uff1a\u4e3a\u4f60\u7684AI\u5e94\u7528\u4e4b\u65c5\u5bfc\u822a"},"content":{"rendered":"<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/5d1c831f477a44bfbd5fb5e5a8703e43.png\" alt=\"LangChain\u521d\u63a2\uff1a\u4e3a\u4f60\u7684AI\u5e94\u7528\u4e4b\u65c5\u5bfc\u822a\" \/><\/figure>\n<\/p>\n<blockquote>\n<p>\u5148\u6765\u4e2a\u6e29\u99a8\u7684\u5c0f\u63d0\u9192\uff1a <\/p>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u867d\u7136\u8f83\u4e3a\u5168\u9762\u5730\u4ecb\u7ecd\u4e86 LangChain\uff0c\u4f46\u90fd\u662f\u70b9\u5230\u4e3a\u6b62\uff0c\u53ea\u662f\u8ba9\u4f60\u4e86\u89e3\u4e00\u4e0b\u5b83\u7684\u76ae\u6bdb\u800c\u5df2\uff0c\u9002\u5408\u5c0f\u767d\u9009\u624b\u3002 <\/p>\n<p>So\uff0c\u5982\u679c\u4f60\u662f LangChain \u7684\u5c0f\u767d\uff0c\u770b\u5b8c\u4e4b\u540e\u8fd8\u662f\u4e00\u5934\u96fe\u6c34\uff0c\u90a3\u5c31\u8bf7\u6beb\u4e0d\u7559\u60c5\u5730\uff0c\u72e0\u72e0\u5730 &#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230; \u7ed9\u6211\u70b9\u8d5e\u5427 (\u3000\uff9f\u2200\u3000\uff9f) \uff89\u2661\uff01\u6709\u4e86\u4f60\u7684\u9f13\u52b1\uff0c\u6211\u4f1a\u518d\u63a5\u518d\u5389\u7684\uff01(\u0e07 \u2022_\u2022)\u0e07<\/p>\n<\/blockquote>\n<h2 data-id=\"heading-0\">What?<\/h2>\n<p>\u4e39\u5c3c\u5c14\uff1a\u86cb\u5144\uff0c\u521a\u521a\u542c\u5230\u522b\u4eba\u5728\u8bf4 LangChain\uff0c\u4f60\u77e5\u9053\u662f\u5565\u73a9\u610f\u5417\uff1f<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u54e6\uff0cLangChain \u554a\uff0c\u4e00\u4e2a\u5f00\u53d1\u6846\u67b6<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u5f00\u53d1\u5565\u7684\u6846\u67b6\uff1f<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u4e00\u4e2a\u7528\u4e8e\u5f00\u53d1\u8bed\u8a00\u6a21\u578b\u9a71\u52a8\u7684\u5e94\u7528\u7684\u6846\u67b6<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u54e6\uff0c\u5f00\u53d1\u8fd9\u79cd\u5e94\u7528\uff0c\u4e0d\u5c31\u662f\u5199\u5199 Prompt \u63d0\u793a\u8bed\uff0c\u8c03\u8c03\u8bed\u8a00\u6a21\u578b API \u7684\u4e8b\u4e48\uff1f<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u6ca1\u9519\u3002\u4f46 LangChain \u4f7f\u5f97 Prompt \u7684\u7f16\u5199\uff0cAPI \u7684\u8c03\u7528\u66f4\u52a0\u6807\u51c6\u5316<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u5c31\u8fd9\u6837\u5417\uff1f<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u5f53\u7136\u4e0d\u6b62\uff0c\u5b83\u8fd8\u6709\u5f88\u591a\u5f88\u9177\u7684\u529f\u80fd<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u6bd4\u5982\uff1f<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u5b83\u53ef\u4ee5\u8fde\u63a5\u5916\u90e8\u6570\u636e\u6e90\uff0c\u6839\u636e\u8f93\u5165\u68c0\u7d22\u76f8\u5173\u6570\u636e\u4f5c\u4e3a\u4e0a\u4e0b\u6587\u7ed9\u5230\u8bed\u8a00\u6a21\u578b\uff0c\u4f7f\u5f97\u8bed\u8a00\u6a21\u578b\u53ef\u4ee5\u56de\u7b54\u8bad\u7ec3\u6570\u636e\u4e4b\u5916\u7684\u95ee\u9898\u3002\u8fd9\u662f\u7531 LangChain \u7684 <code>Retrieval<\/code> \u6765\u5b9e\u73b0\u7684<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u592a\u9177\u4e86\uff0c\u6211\u60f3\u5230\u4e86\u4e00\u4e2a\u573a\u666f\uff0c\u6bd4\u5982\u901a\u8fc7\u5b83\u6765\u8fde\u63a5\u5ba2\u670d\u7684\u56de\u7b54\u8bdd\u672f\u5e93\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u8ba9\u8bed\u8a00\u6a21\u578b\u6447\u8eab\u4e00\u53d8\uff0c\u53d8\u6210\u4e00\u4e2a\u4e13\u4e1a\u7684\u5ba2\u670d\u4e86<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u6069\uff0c\u8fd9\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u573a\u666f<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u8fd8\u6709\u5176\u5b83\u66f4\u9177\u7684\u529f\u80fd\u5417\uff1f<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u5b83\u53ef\u4ee5\u8ba9\u8bed\u8a00\u6a21\u578b\u6765\u81ea\u884c\u51b3\u5b9a\u91c7\u53d6\u54ea\u4e9b\u884c\u52a8<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u8fd9\u4e2a\u5c31\u4e0d\u662f\u5f88\u660e\u767d\u4e86<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u63a5\u7740\u4f60\u90a3\u4e2a\u5ba2\u670d\u7684\u4f8b\u5b50\u7ee7\u7eed\u8bf4\u3002\u5982\u679c\u7528\u6237\u95ee\u7684\u95ee\u9898\u662f\u5173\u4e8e\u516c\u53f8\u4ea7\u54c1\u7684\uff0c\u6211\u4eec\u5c31\u60f3\u8ba9\u8bed\u8a00\u6a21\u578b\u4f7f\u7528\u5ba2\u670d\u7684\u8bdd\u672f\u5e93\u6765\u56de\u7b54\uff1b\u5982\u679c\u662f\u5176\u5b83\u95ee\u9898\uff0c\u5c31\u8ba9\u8bed\u8a00\u6a21\u578b\u7528\u5b83\u81ea\u5df1\u7684\u77e5\u8bc6\u6765\u76f4\u63a5\u56de\u7b54\u3002\u5982\u679c\u662f\u4f60\uff0c\u4f60\u4f1a\u600e\u4e48\u5b9e\u73b0\uff1f<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u6211\u60f3\u6211\u4f1a\u5148\u901a\u8fc7\u8bed\u8a00\u6a21\u578b\u6765\u5224\u65ad\u7528\u6237\u7684\u95ee\u9898\u662f\u5426\u5173\u4e8e\u516c\u53f8\u4ea7\u54c1\u3002\u5982\u679c\u662f\uff0c\u5c31\u8d70\u8fde\u63a5\u8bdd\u672f\u5e93\u7684\u903b\u8f91\uff1b\u5982\u679c\u4e0d\u662f\uff0c\u5c31\u8d70\u8ba9\u8bed\u8a00\u6a21\u578b\u76f4\u63a5\u56de\u7b54\u7684\u903b\u8f91<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u6069\uff0c\u4f60\u8fd9\u79cd\u5c31\u662f hardcode \u903b\u8f91\u7684\u65b9\u5f0f\u3002\u8fd8\u6709\u4e00\u79cd\u66f4\u52a0 amazing \u7684 \u65b9\u5f0f\uff0c\u5c31\u662f\u8ba9\u8bed\u8a00\u6a21\u578b\u81ea\u884c\u51b3\u5b9a\u91c7\u53d6\u54ea\u79cd\u884c\u4e3a\u3002\u8fd9\u4e2a\u7531 LangChain \u7684 <code>Agent<\/code> \u6765\u5b9e\u73b0\u3002<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u542c\u4e0a\u53bb\u592a\u9177\u4e86\uff0c\u600e\u4e48\u7528\u5462\uff1f<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u83ab\u6025\uff0c\u5f85\u6211\u6162\u6162\u9053\u6765<\/p>\n<h2 data-id=\"heading-1\">Why?<\/h2>\n<p>\u4e39\u5c3c\u5c14\uff1a\u86cb\u5144\uff0c\u4f60\u521a\u521a\u8bf4\u5230 LangChain \u4f7f\u5f97 Prompt \u7684\u7f16\u5199\uff0cAPI \u7684\u8c03\u7528\u66f4\u52a0\u6807\u51c6\u5316\uff0c\u6807\u51c6\u5316\u4e86\u80af\u5b9a\u662f\u597d\u7684\uff0c\u4f46\u597d\u5904\u5f88\u5927\u5417\uff1f\u6211\u7528\u8bed\u8a00\u6a21\u578b\u7684 SDK \u4e0d\u4e5f\u7528\u5f97\u597d\u597d\u7684\u5417\uff1f<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u90a3\u4f60\u5148\u7ed9\u4e00\u4e2a\u4f7f\u7528 SDK \u4e0e\u8bed\u8a00\u6a21\u578b\u4ea4\u4e92\u7684\u4f8b\u5b50\u5457<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u8fd9\u8fd8\u4e0d\u7b80\u5355\uff0c\u6211\u5c31\u7528\u8fd9\u4e2a\u5427\uff1a<a href=\"https:\/\/link.juejin.cn?target=https%3A%2F%2Ffireworks.ai%2F\" target=\"_blank\" title=\"https:\/\/fireworks.ai\/\" ref=\"nofollow noopener noreferrer\" rel=\"noopener\">fireworks.ai<\/a> \uff08\u6ce8\uff1a\u8fd9\u4e2a\u5e73\u53f0\u63d0\u4f9b\u514d\u8d39\u7684\u8d44\u6e90\uff0c\u8bbf\u95ee\u4e5f\u65b9\u4fbf)<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">python<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-python code-block-extension-codeShowNum\" lang=\"python\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-keyword\">from<\/span> fireworks.client <span class=\"hljs-keyword\">import<\/span> Fireworks<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\">client = Fireworks(api_key=<span class=\"hljs-string\">\"&lt;FIREWORKS_API_KEY&gt;\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">response = client.chat.completions.create(<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\">  model=<span class=\"hljs-string\">\"accounts\/fireworks\/models\/llama-v2-7b-chat\"<\/span>,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\">  messages=[{<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\">    <span class=\"hljs-string\">\"role\"<\/span>: <span class=\"hljs-string\">\"user\"<\/span>,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\">    <span class=\"hljs-string\">\"content\"<\/span>: <span class=\"hljs-string\">\"Who are you?\"<\/span>,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"9\">  }],<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"10\">)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"11\"><span class=\"hljs-built_in\">print<\/span>(response.choices[<span class=\"hljs-number\">0<\/span>].message.content)<\/span>\n<\/code><\/pre>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">bash<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-bash code-block-extension-codeShowNum\" lang=\"bash\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">\u8f93\u51fa\uff1a<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">Hello! I<span class=\"hljs-string\">'m just an AI assistant, here to help you in any way I can. My purpose is to provide helpful and respectful responses, always being safe and socially unbiased. I'<\/span>m here to assist you <span class=\"hljs-keyword\">in<\/span> a positive and ethical manner, and I<span class=\"hljs-string\">'m happy to help you with any questions or tasks you may have. Is there anything specific you would like me to help you with?<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><\/span>\n<\/code><\/pre>\n<p>\u86cb\u5148\u751f\uff1a\u5f88\u597d\uff0c\u518d\u7ed9\u53e6\u5916\u4e00\u4e2a\u8bed\u8a00\u6a21\u578b\u7684\u4f8b\u5b50\u5457<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u989d\uff0c\u4e00\u6837\u7684\u64cd\u4f5c\u554a\uff0c\u4f60\u8fd9\u662f\u5728\u6d88\u9063\u6211\u5417\uff1f\u597d\u5427\uff0c\u90a3\u6211\u5c31\u518d\u7ed9\u4e00\u4e2a\u767e\u5ea6\u7684\u6587\u5fc3\u4e00\u8a00\u7684\u4f8b\u5b50<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">python<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-python code-block-extension-codeShowNum\" lang=\"python\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-keyword\">import<\/span> os<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-keyword\">import<\/span> qianfan<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">os.environ[<span class=\"hljs-string\">\"QIANFAN_AK\"<\/span>] = <span class=\"hljs-string\">\"&lt;QIANFAN_AK&gt;\"<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\">os.environ[<span class=\"hljs-string\">\"QIANFAN_SK\"<\/span>] = <span class=\"hljs-string\">\"&lt;QIANFAN_SK&gt;\"<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\">chat_comp = qianfan.ChatCompletion()<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"9\">resp = chat_comp.do(messages=[{<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"10\">    <span class=\"hljs-string\">\"role\"<\/span>: <span class=\"hljs-string\">\"user\"<\/span>,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"11\">    <span class=\"hljs-string\">\"content\"<\/span>: <span class=\"hljs-string\">\"Who are you?\"<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"12\">}])<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"13\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"14\"><span class=\"hljs-built_in\">print<\/span>(resp.body[<span class=\"hljs-string\">'result'<\/span>])<\/span>\n<\/code><\/pre>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">bash<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-bash code-block-extension-codeShowNum\" lang=\"bash\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">\u8f93\u51fa\uff1a<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">\u60a8\u597d\uff0c\u6211\u662f\u767e\u5ea6\u7814\u53d1\u7684\u77e5\u8bc6\u589e\u5f3a\u5927\u8bed\u8a00\u6a21\u578b\uff0c\u4e2d\u6587\u540d\u662f\u6587\u5fc3\u4e00\u8a00\uff0c\u82f1\u6587\u540d\u662fERNIE Bot\u3002\u6211\u80fd\u591f\u4e0e\u4eba\u5bf9\u8bdd\u4e92\u52a8\uff0c\u56de\u7b54\u95ee\u9898\uff0c\u534f\u52a9\u521b\u4f5c\uff0c\u9ad8\u6548\u4fbf\u6377\u5730\u5e2e\u52a9\u4eba\u4eec\u83b7\u53d6\u4fe1\u606f\u3001\u77e5\u8bc6\u548c\u7075\u611f\u3002<\/span>\n<\/code><\/pre>\n<p>\u86cb\u5148\u751f\uff1aGood\uff0c\u73b0\u5728\u5047\u8bbe\u6211\u4e00\u5f00\u59cb\u4f7f\u7528 fireworks \u6765\u5f00\u53d1\u5e94\u7528\uff0c\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u6548\u679c\u4e0d\u592a\u7406\u60f3\uff0c\u60f3\u6362\u6210\u6587\u5fc3\u4e00\u8a00\u5462\uff1f<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1aOh~\uff0c\u5404\u4e2a\u8bed\u8a00\u6a21\u578b\u7684 SDK \u7684\u63a5\u53e3\u5b9a\u4e49\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u66ff\u6362\u8d77\u6765\u786e\u5b9e\u9ebb\u70e6\u3002\u6765\u5427\uff0c\u662f\u65f6\u5019\u5f00\u59cb\u4f60\u7684\u8868\u6f14\u4e86<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u6211\u4eec\u76f4\u63a5\u6765\u770b\u4e0b\u901a\u8fc7 LangChain \u4f7f\u7528 fireworks \u548c \u6587\u5fc3\u4e00\u8a00 \u7684\u4ee3\u7801\u793a\u4f8b\u5427\uff0c\u6bd5\u7adf No Code No BB \u561b<\/p>\n<ul>\n<li>fireworks LangChain \u793a\u4f8b<\/li>\n<\/ul>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">python<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-python code-block-extension-codeShowNum\" lang=\"python\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-keyword\">import<\/span> os<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-keyword\">from<\/span> langchain_community.chat_models.fireworks <span class=\"hljs-keyword\">import<\/span> ChatFireworks<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">os.environ[<span class=\"hljs-string\">\"FIREWORKS_API_KEY\"<\/span>] = <span class=\"hljs-string\">'&lt;FIREWORKS_API_KEY&gt;'<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\">model = ChatFireworks(model=<span class=\"hljs-string\">\"accounts\/fireworks\/models\/llama-v2-13b-chat\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\">res = model.invoke(<span class=\"hljs-string\">\"Who are you?\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\"><span class=\"hljs-built_in\">print<\/span>(res.content)<\/span>\n<\/code><\/pre>\n<ul>\n<li>\u6587\u5fc3\u4e00\u8a00 LangChain \u793a\u4f8b<\/li>\n<\/ul>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">python<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-python code-block-extension-codeShowNum\" lang=\"python\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-keyword\">import<\/span> os<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-keyword\">from<\/span> langchain_community.chat_models <span class=\"hljs-keyword\">import<\/span> QianfanChatEndpoint<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">os.environ[<span class=\"hljs-string\">\"QIANFAN_AK\"<\/span>] = <span class=\"hljs-string\">\"&lt;QIANFAN_AK&gt;\"<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\">os.environ[<span class=\"hljs-string\">\"QIANFAN_SK\"<\/span>] = <span class=\"hljs-string\">\"&lt;QIANFAN_SK&gt;\"<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\">model = QianfanChatEndpoint(model=<span class=\"hljs-string\">\"ERNIE-Bot-turbo\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\">res = model.invoke(<span class=\"hljs-string\">\"Who are you?\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"9\"><span class=\"hljs-built_in\">print<\/span>(res.content)<\/span>\n<\/code><\/pre>\n<p>\u4e39\u5c3c\u5c14\uff1a\u597d\u50cf\u770b\u51fa\u6765\u4e86\uff0c\u6807\u51c6\u5316\u4e4b\u540e\uff0c\u8981\u66f4\u6362\u8bed\u8a00\u6a21\u578b\u53d8\u5f97\u975e\u5e38\u65b9\u4fbf\u4e86\uff0c\u53ea\u9700\u8981\u66f4\u6362\u4e0b model \u7684\u5b9e\u4f8b\u5316\u5c31\u884c\u4e86<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u662f\u7684\uff0c\u8fd9\u53ea\u662f\u4e2a\u6700\u7b80\u5355\u7684\u4f8b\u5b50\uff0cLangChain \u8fd8\u6709\u5f88\u591a\u79cd\u4f18\u96c5\u7684\u65b9\u5f0f\u6765\u5207\u6362\u4e0d\u540c\u7684\u6a21\u578b\u3002\u4ece\u6b64\u4ee5\u540e\u6211\u4eec\u5c31\u53ef\u4ee5\u4e13\u6ce8\u4e8e Prompt \u7684\u5f00\u53d1\u4e86\u3002\u8bed\u8a00\u6a21\u578b\u561b\uff0c\u54ea\u4e2a\u5408\u9002\u6362\u54ea\u4e2a<\/p>\n<h2 data-id=\"heading-2\">How?<\/h2>\n<p>\u4e39\u5c3c\u5c14\uff1a\u597d\u4e86\uff0c\u6211\u51b3\u5b9a\u5165\u5751 LangChain \u4e86\uff0c\u90a3\u54b1\u4eec\u8fdb\u4e00\u6b65\u804a\u804a\uff1f<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u5f53\u7136\u53ef\u4ee5\uff01\u6211\u4eec\u4ece\u7b80\u5355\u5230\u590d\u6742\uff0c\u7ed3\u5408\u4ee3\u7801\u548c\u6d41\u7a0b\u56fe\u6765\u5c55\u793a LangChain \u7684\u4e00\u4e9b\u7528\u6cd5\u3002\u5148\u6765\u6700\u7b80\u5355\u7684\u4ee3\u66ff SDK \u7684\u7528\u6cd5\uff0c\u8fd9\u4e2a\u4e0a\u8fb9\u5df2\u7ecf\u6709\u63d0\u5230\u4e86<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">python<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-python code-block-extension-codeShowNum\" lang=\"python\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">res = model.invoke(<span class=\"hljs-string\">\"tell me a short joke about a cat\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-built_in\">print<\/span>(res.content)<\/span>\n<\/code><\/pre>\n<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/0f1b64aa4f10f23fba2489049bd0d82e.png\" alt=\"image\" \/><\/figure>\n<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u6069\uff0c\u8fd9\u4e2a so easy\uff0c\u4e00\u7784\u5c31\u61c2<\/p>\n<p>\u86cb\u5148\u751f\uff1aOK\uff0c\u90a3\u63a5\u4e0b\u6765\u6211\u4eec\u6765\u4f7f\u7528 PromptTemplate\uff0c\u901a\u8fc7\u53d8\u91cf\u7684\u65b9\u5f0f\u6765\u63a7\u5236\u6a21\u677f\u91cc\u7684\u90e8\u5206\u5185\u5bb9<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">python<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-python code-block-extension-codeShowNum\" lang=\"python\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-keyword\">from<\/span> langchain_core.prompts <span class=\"hljs-keyword\">import<\/span> ChatPromptTemplate<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\">...<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\">prompt = ChatPromptTemplate.from_template(<span class=\"hljs-string\">\"tell me a short joke about {topic}\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\">chain = prompt | model<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\">res = chain.invoke({<span class=\"hljs-string\">\"topic\"<\/span>: <span class=\"hljs-string\">\"a cat\"<\/span>})<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\"><span class=\"hljs-built_in\">print<\/span>(res.content)<\/span>\n<\/code><\/pre>\n<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/f5d47d4e7e3a1e0cad7907e580c1600c.png\" alt=\"image\" \/><\/figure>\n<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u4f7f\u7528 PromptTemplate \u7684\u65b9\u5f0f\u6765\u5199 prompt\uff0c\u786e\u5b9e\u6bd4\u5b57\u7b26\u4e32\u7684\u62fc\u63a5\u8981\u4f18\u96c5\u4e0d\u5c11<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u518d\u52a0\u4e2a\u7b80\u5355\u7684\u8f93\u51fa\u8f6c\u6362\u5427<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">python<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-python code-block-extension-codeShowNum\" lang=\"python\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-keyword\">from<\/span> langchain_core.prompts <span class=\"hljs-keyword\">import<\/span> ChatPromptTemplate<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-keyword\">from<\/span> langchain_core.output_parsers <span class=\"hljs-keyword\">import<\/span> StrOutputParser<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">...<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\">prompt = ChatPromptTemplate.from_template(<span class=\"hljs-string\">\"tell me a short joke about {topic}\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\">output_parser = StrOutputParser()<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\">chain = prompt | model | output_parser<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"9\">res = chain.invoke({<span class=\"hljs-string\">\"topic\"<\/span>: <span class=\"hljs-string\">\"a cat\"<\/span>})<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"10\"><span class=\"hljs-built_in\">print<\/span>(res)<\/span>\n<\/code><\/pre>\n<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/b589d438f5a3685568d34bf6eb7c4595.png\" alt=\"image\" \/><\/figure>\n<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u7ec8\u4e8e\u77e5\u9053\u4e3a\u5565\u53eb <code>chain<\/code> \u4e86<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u7ee7\u7eed\uff1f<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u7ee7\u7eed&#8230;<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u63a5\u4e0b\u6765\u8fd9\u6bb5\u4ee3\u7801\u53ef\u80fd\u6709\u70b9\u957f\u54e6<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">python<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-python code-block-extension-codeShowNum\" lang=\"python\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-keyword\">from<\/span> langchain_community.embeddings <span class=\"hljs-keyword\">import<\/span> QianfanEmbeddingsEndpoint<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-keyword\">from<\/span> langchain_community.document_loaders <span class=\"hljs-keyword\">import<\/span> WebBaseLoader<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><span class=\"hljs-keyword\">from<\/span> langchain_community.vectorstores <span class=\"hljs-keyword\">import<\/span> faiss<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\"><span class=\"hljs-keyword\">from<\/span> langchain_community.chat_models <span class=\"hljs-keyword\">import<\/span> QianfanChatEndpoint<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\"><span class=\"hljs-keyword\">from<\/span> langchain.text_splitter <span class=\"hljs-keyword\">import<\/span> RecursiveCharacterTextSplitter<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\"><span class=\"hljs-keyword\">from<\/span> langchain.chains.combine_documents <span class=\"hljs-keyword\">import<\/span> create_stuff_documents_chain<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"9\"><span class=\"hljs-keyword\">from<\/span> langchain_core.prompts <span class=\"hljs-keyword\">import<\/span> ChatPromptTemplate<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"10\"><span class=\"hljs-keyword\">from<\/span> langchain_core.runnables <span class=\"hljs-keyword\">import<\/span> RunnableParallel, RunnablePassthrough<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"11\"><span class=\"hljs-keyword\">from<\/span> langchain_core.output_parsers <span class=\"hljs-keyword\">import<\/span> StrOutputParser<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"12\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"13\"><span class=\"hljs-comment\"># 1<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"14\">docs = WebBaseLoader(<span class=\"hljs-string\">\"https:\/\/docs.smith.langchain.com\"<\/span>).load()<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"15\">embeddings = QianfanEmbeddingsEndpoint()<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"16\">documents = RecursiveCharacterTextSplitter(chunk_size=<span class=\"hljs-number\">900<\/span>).split_documents(docs)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"17\">vector = faiss.FAISS.from_documents(documents, embeddings)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"18\">retriever = vector.as_retriever(search_kwargs={<span class=\"hljs-string\">'k'<\/span>: <span class=\"hljs-number\">4<\/span>})<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"19\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"20\"><span class=\"hljs-comment\"># 2<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"21\">setup_and_retrieval = RunnableParallel(<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"22\">    {<span class=\"hljs-string\">\"context\"<\/span>: retriever, <span class=\"hljs-string\">\"input\"<\/span>: RunnablePassthrough()}<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"23\">)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"24\">prompt = ChatPromptTemplate.from_template(<span class=\"hljs-string\">\"\"\"Answer the following question based only on the provided context:<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"25\">&lt;context&gt;<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"26\">{context}<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"27\">&lt;\/context&gt;<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"28\">Question: {input}\"\"\")<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"29\">model = QianfanChatEndpoint(streaming=<span class=\"hljs-literal\">False<\/span>, model=<span class=\"hljs-string\">\"ERNIE-Bot-turbo\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"30\">output_parser = StrOutputParser()<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"31\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"32\"><span class=\"hljs-comment\"># 3<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"33\">retrieval_chain = setup_and_retrieval | prompt | model | output_parser<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"34\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"35\">res = retrieval_chain.invoke(<span class=\"hljs-string\">\"how can langsmith help with testing?\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"36\"><span class=\"hljs-built_in\">print<\/span>(res)<\/span>\n<\/code><\/pre>\n<p>\u4e39\u5c3c\u5c14\uff1a\u8bf7\u628a\u201c\u53ef\u80fd\u201d\u53bb\u6389\uff0c\u8c22\u8c22<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u4f46\u903b\u8f91\u5176\u5b9e\u5e76\u4e0d\u590d\u6742\uff0c\u4e3b\u8981\u5206\u4e3a\u4e09\u5757<\/p>\n<p>1\uff09\u52a0\u8f7d\u7f51\u9875\u6587\u6863\uff0c\u901a\u8fc7 <code>Embeddings<\/code> \u5c06\u6587\u6863\u5185\u5bb9\u8f6c\u6210\u5411\u91cf\u5e76\u5b58\u50a8\u5728\u5411\u91cf\u6570\u636e\u5e93 <code>FAISS<\/code> \u4e2d\uff0c<code>retriever<\/code> \u5c31\u662f\u4e00\u4e2a\u53ef\u4ee5\u6839\u636e\u8f93\u5165\u4ece\u5411\u91cf\u6570\u636e\u5e93\u83b7\u53d6\u76f8\u5173\u6587\u6863\u7684\u68c0\u7d22\u5de5\u5177<\/p>\n<p>2\uff09\u58f0\u660e chain \u7684\u5404\u4e2a\u6b65\u9aa4<\/p>\n<p>3\uff09\u5c06\u5404\u4e2a\u6b65\u9aa4\u6309\u987a\u5e8f chain \u8d77\u6765<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u7b49\u7b49\uff0c\u770b\u7740\u6709\u70b9\u8111\u58f3\u75bc\u3002Embeddings\uff1f\u5411\u91cf\uff1f\u5411\u91cf\u6570\u636e\u5e93\uff1f<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u54b1\u4eec\u4eca\u5929\u662f\u201c\u521d\u63a2\u201d\uff0c\u6240\u4ee5\u4e5f\u53ea\u80fd\u7b80\u5355\u8bb2\u8bb2\uff0c\u4e0d\u7136\u5f88\u591a\u540c\u5b66\u5c31\u8981\u660f\u660f\u6b32\u7761\u4e86<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u6ca1\u95ee\u9898\uff0c\u6709\u4e2a\u5927\u6982\u5370\u8c61\u4e5f\u597d<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u9996\u5148\uff0c\u4e3a\u4ec0\u4e48\u8981\u5c06\u6587\u672c\u8f6c\u6210\u5411\u91cf\u5462\uff1f\u56e0\u4e3a\u901a\u8fc7\u8ba1\u7b97\u4e24\u4e2a\u5411\u91cf\u7684\u8ddd\u79bb\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u91cf\u5316\u5730\u8bc4\u4f30\u5b83\u4eec\u7684\u76f8\u5173\u6027\u3002\u8ddd\u79bb\u8d8a\u5c0f\uff0c\u901a\u5e38\u610f\u5473\u7740\u6587\u672c\u4e4b\u95f4\u7684\u76f8\u5173\u6027\u8d8a\u9ad8\u3002\u6211\u4eec\u8fd9\u91cc\u662f\u9700\u8981\u68c0\u7d22\u4e0e\u8f93\u5165\u76f8\u5173\u7684\u6587\u6863\u5185\u5bb9\uff0c\u5c06\u5176\u4f5c\u4e3a\u4f1a\u8bdd\u4e0a\u4e0b\u6587\u63d0\u4f9b\u7ed9\u8bed\u8a00\u6a21\u578b\u3002\u5982\u679c\u662f\u6574\u4e2a\u6587\u6863\u90fd\u4f20\u8fc7\u53bb\uff0c\u662f\u4e0d\u662f\u5c31\u592a\u5927\u4e86\u5462\uff1f<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u54e6\uff0c\u539f\u6765\u5411\u91cf\u6709\u8fd9\u4e48\u9ad8\u7ea7\u7684\u529f\u80fd\u554a<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u6ca1\u9519\u3002\u7136\u540e\u8981\u5c06\u6587\u672c\u8f6c\u6210\u5411\u91cf\uff0c\u5c31\u9700\u8981\u7528\u5230 Embeddings\uff08\u8bcd\u5d4c\u5165\uff09\u6280\u672f\u3002Embeddings \u5728\u5386\u53f2\u4e0a\u6709\u8fc7\u591a\u79cd\u65b9\u6cd5\uff0c\u5982\u57fa\u4e8e\u7edf\u8ba1\u7684\u8ba1\u6570\u65b9\u6cd5\uff0c\u57fa\u4e8e\u795e\u7ecf\u7f51\u7edc\u7684\u63a8\u7406\u65b9\u6cd5\u7b49\u3002 <code>QianfanEmbeddingsEndpoint<\/code> \u6b63\u662f\u4e00\u4e2a\u5229\u7528\u6df1\u5ea6\u5b66\u4e60\u8bad\u7ec3\u5f97\u5230\u7684 Embeddings \u6a21\u578b\u670d\u52a1\uff0c\u8f93\u5165\u4e3a\u6587\u672c\uff0c\u8f93\u51fa\u4e3a\u5411\u91cf<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u5927\u6982\u6709\u70b9\u660e\u767d\u4e86<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u90a3\u6211\u4eec\u63a5\u7740\u770b\u4e0b\u6d41\u7a0b\u56fe<\/p>\n<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/a808c5138836e3df80523fcd6e01d17e.png\" alt=\"image\" \/><\/figure>\n<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u80fd\u5426\u4e3a\u5c0f\u5f1f\u6211\u89e3\u91ca\u4e00\u4e0b\u4e0a\u9762\u8fd9\u4e2a\u6d41\u7a0b\u56fe\u7684\u524d\u534a\u90e8\u5206<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u5f53\u7136\uff01\u9996\u5148\u8f93\u5165\u662f &#8220;how can langsmith help with testing?&#8221;\uff1b\u63a5\u7740\u6709\u4e2a\u5e76\u884c\u7684\u903b\u8f91\uff0c\u4e00\u4e2a\u662f\u901a\u8fc7 Retriever \u6839\u636e\u8f93\u5165\u68c0\u7d22\u76f8\u5173\u7684\u6587\u6863\u5185\u5bb9\u4f5c\u4e3a context \u7684\u503c\uff0c\u53e6\u4e00\u4e2a\u5219\u662f\u76f4\u63a5 pass \u5c06\u8f93\u5165\u4f5c\u4e3a input \u7684\u503c\uff1b\u7136\u540e\u5c31\u662f\u5c06\u6570\u636e\u4f20\u7ed9 Prompt \u6a21\u677f\uff0c\u6700\u7ec8\u5c31\u53ef\u4ee5\u5f97\u5230\u4f20\u7ed9\u8bed\u8a00\u6a21\u578b\u7684 PromptValue \u4e86<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1aSoga<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u6ce8\u610f\uff0c\u538b\u8f74\u8981\u767b\u573a\u4e86\u54e6\uff0c\u73b0\u5728\u8ba9\u6211\u4eec\u6765\u8bf7\u51fa\u5927\u540d\u9f0e\u9f0e\u7684 Agent \u5427<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">python<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-python code-block-extension-codeShowNum\" lang=\"python\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-keyword\">from<\/span> langchain <span class=\"hljs-keyword\">import<\/span> hub<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-keyword\">from<\/span> langchain.agents <span class=\"hljs-keyword\">import<\/span> AgentExecutor, create_json_chat_agent<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><span class=\"hljs-keyword\">from<\/span> langchain.tools <span class=\"hljs-keyword\">import<\/span> tool<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\"><span class=\"hljs-keyword\">from<\/span> langchain_community.chat_models.fireworks <span class=\"hljs-keyword\">import<\/span> ChatFireworks<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\"><span class=\"hljs-meta\">@tool<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\"><span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">leng<\/span>(<span class=\"hljs-params\">word: <span class=\"hljs-built_in\">str<\/span><\/span>) -&gt; <span class=\"hljs-built_in\">str<\/span>:<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\">    <span class=\"hljs-string\">\"\"\"Please use this tool if you want to find the length of the word.\"\"\"<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"9\">    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-built_in\">len<\/span>(word)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"10\"><span class=\"hljs-meta\">@tool<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"11\"><span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">lower<\/span>(<span class=\"hljs-params\">word: <span class=\"hljs-built_in\">str<\/span><\/span>) -&gt; <span class=\"hljs-built_in\">str<\/span>:<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"12\">    <span class=\"hljs-string\">\"\"\"Please use this tool if you need to change the word to lowercase.\"\"\"<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"13\">    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-string\">f'dx_<span class=\"hljs-subst\">{word.lower()}<\/span>'<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"14\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"15\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"16\">tools = [leng, lower]<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"17\">model = ChatFireworks(model=<span class=\"hljs-string\">\"accounts\/fireworks\/models\/llama-v2-70b-chat\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"18\">prompt = hub.pull(<span class=\"hljs-string\">\"hwchase17\/react-chat-json\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"19\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"20\">agent = create_json_chat_agent(model, tools, prompt, stop_sequence=<span class=\"hljs-literal\">False<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"21\">agent_executor = AgentExecutor(<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"22\">    agent=agent, tools=tools, verbose=<span class=\"hljs-literal\">True<\/span>, handle_parsing_errors=<span class=\"hljs-literal\">True<\/span>, max_iterations=<span class=\"hljs-number\">5<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"23\">    <\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"24\">res = agent_executor.invoke({<span class=\"hljs-string\">\"input\"<\/span>: <span class=\"hljs-string\">\"Make this word lowercase: 'Daniel'\"<\/span>})<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"25\"><span class=\"hljs-built_in\">print<\/span>(res)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"26\"><\/span>\n<\/code><\/pre>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">sh<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-sh code-block-extension-codeShowNum\" lang=\"sh\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">{<span class=\"hljs-string\">'input'<\/span>: <span class=\"hljs-string\">\"Make this word lowercase: 'Daniel'\"<\/span>, <span class=\"hljs-string\">'output'<\/span>: <span class=\"hljs-string\">\"The lowercase version of 'Daniel' is 'dx_daniel'\"<\/span>}<\/span>\n<\/code><\/pre>\n<p>\u4e39\u5c3c\u5c14\uff1a\u597d\u8036\uff0c\u5feb\u70b9\u8bb2\u89e3\u4e00\u4e0b\u5427<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u9996\u5148\u6211\u4eec\u58f0\u660e\u4e86\u4e24\u4e2a\u5de5\u5177\uff1a\u4e00\u4e2a\u662f leng\uff08\u7528\u4e8e\u6c42\u5b57\u7b26\u4e32\u957f\u5ea6\uff09\uff0c\u4e00\u4e2a\u662f lower\uff08\u7528\u4e8e\u5c06\u5b57\u7b26\u4e32\u53d8\u6210\u5c0f\u5199\uff09\u3002\u8fd9\u91cc\u4e3a\u4e86\u8bc1\u660e\u7ed3\u679c\u662f\u901a\u8fc7\u6211\u4eec\u7684\u5de5\u5177\u6765\u5f97\u5230\u7ed3\u679c\u7684\uff0c\u6240\u4ee5\u7279\u610f\u5728 lower \u7684\u5b9e\u73b0\u4e2d\u52a0\u4e86\u4e2a dx_ \u524d\u7f00<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u7b49\u7b49\uff0c<code>hub.pull(\"hwchase17\/react-chat-json\")<\/code> \u662f\u4ec0\u4e48\u795e\u79d8\u4ee3\u7801\uff1f<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u8fd9\u662f <a href=\"https:\/\/link.juejin.cn?target=https%3A%2F%2Fsmith.langchain.com%2Fhub\" target=\"_blank\" title=\"https:\/\/smith.langchain.com\/hub\" ref=\"nofollow noopener noreferrer\" rel=\"noopener\">LangChain hub<\/a> \u793e\u533a\u4e0a\u5171\u4eab\u7684\u7528\u4e8e\u5b9e\u73b0 Agent \u7684\u4f17\u591a Prompt \u4e2d\u7684\u4e00\u4e2a\uff0c\u4f60\u53ef\u4ee5\u5728\u8fd9\u91cc\u627e\u5230\u5f88\u591a\u6709\u7528\u7684 Prompt\u3002\u6bd5\u7adf\uff0c\u8bed\u8a00\u5de5\u7a0b\u4e5f\u662f\u4e00\u79cd\u827a\u672f\uff0c\u4e5f\u662f\u9700\u8981\u5b9e\u8df5\u79ef\u7d2f\u7684\u3002<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u660e\u767d\uff0c\u8bf7\u7ee7\u7eed<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u901a\u8fc7 Agent\uff0c\u8bed\u8a00\u6a21\u578b\u5c31\u53ef\u4ee5\u6839\u636e\u8f93\u5165\u81ea\u884c\u5224\u65ad\u5e94\u8be5\u4f7f\u7528\u54ea\u4e2a\u5de5\u5177\u4e86<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u54c7\uff0c\u8fd9\u592a\u795e\u5947\u4e86\uff01\u6211\u5bf9\u5b83\u662f\u600e\u4e48\u81ea\u884c\u5224\u65ad\u5f88\u611f\u5174\u8da3<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u7b80\u5355\u6765\u8bf4\uff0c\u8bed\u8a00\u6a21\u578b\u53ef\u4ee5\u6839\u636e\u8f93\u5165\uff0c\u518d\u6839\u636e\u5404\u4e2a\u5de5\u5177\u7684\u63cf\u8ff0\uff0c\u6765\u5224\u65ad\u54ea\u4e2a\u5de5\u5177\u66f4\u9002\u5408\uff0c\u7136\u540e\u5c06\u7ed3\u679c\u8f93\u51fa\u4e3a\u53ef\u4ee5\u8ba9 LangChain \u7406\u89e3\u7684\u6267\u884c\u6307\u4ee4\uff08\u6bd4\u5982 JSON\uff09<\/p>\n<p>\u4e39\u5c3c\u5c14\uff1a\u592a\u68d2\u4e86\uff01\u73b0\u5728\u6211\u5bf9 LangChain \u6709\u4e86\u4e00\u4e2a\u5927\u81f4\u7684\u4e86\u89e3\uff0c\u5e0c\u671b\u4ee5\u540e\u8fd8\u80fd\u8ddf\u4f60\u7ee7\u7eed\u6df1\u5165\u63a2\u8ba8<\/p>\n<p>\u86cb\u5148\u751f\uff1a\u673a\u4f1a\u6709\u6ef4\u662f\uff0c\u54b1\u4eec\u540e\u4f1a\u6709\u671f\uff01\u30fe(\uffe3\u25bd\uffe3)Bye<del>Bye<\/del><\/p>","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u5e26\u6765\u4e86 LangChain \u8f83\u4e3a\u5168\u9762\u7684\u7cbe\u5f69\u521d\u63a2\uff0c\u5e26\u9886\u5c0f\u767d\u9009\u624b\u8f7b\u677e\u63ed\u5f00\u5176\u795e\u79d8\u9762\u7eb1\uff0c\u4e00\u7aa5\u5176\u72ec\u7279\u4e4b\u5904\u3002\u4e0d\u5bb9\u9519\u8fc7\uff01<\/p>\n","protected":false},"author":1,"featured_media":11606,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"rank_math_title":"","rank_math_description":"","rank_math_focus_keyword":"","views":"2","footnotes":""},"categories":[3],"tags":[128,129,136,126,127],"collection":[],"class_list":["post-1749","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fenlei2","tag-128","tag-129","tag-136","tag-gpt","tag-ai"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.nicekj.com\/nicekj2024\/wp\/v2\/posts\/1749","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nicekj.com\/nicekj2024\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nicekj.com\/nicekj2024\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nicekj.com\/nicekj2024\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nicekj.com\/nicekj2024\/wp\/v2\/comments?post=1749"}],"version-history":[{"count":0,"href":"https:\/\/www.nicekj.com\/nicekj2024\/wp\/v2\/posts\/1749\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nicekj.com\/nicekj2024\/wp\/v2\/media\/11606"}],"wp:attachment":[{"href":"https:\/\/www.nicekj.com\/nicekj2024\/wp\/v2\/media?parent=1749"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nicekj.com\/nicekj2024\/wp\/v2\/categories?post=1749"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nicekj.com\/nicekj2024\/wp\/v2\/tags?post=1749"},{"taxonomy":"collection","embeddable":true,"href":"https:\/\/www.nicekj.com\/nicekj2024\/wp\/v2\/collection?post=1749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}