{"id":90634,"date":"2026-08-05T18:17:07","date_gmt":"2026-08-05T10:17:07","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/90634.html"},"modified":"2026-08-05T18:17:07","modified_gmt":"2026-08-05T10:17:07","slug":"langchain-agent-%e6%b5%81%e5%bc%8f%e8%be%93%e5%87%ba%ef%bc%9astream_modevalues-%e6%95%b0%e6%8d%ae%e7%bb%93%e6%9e%84%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/90634.html","title":{"rendered":"LangChain Agent \u6d41\u5f0f\u8f93\u51fa\uff1a`stream_mode=\u201cvalues\u201c` \u6570\u636e\u7ed3\u6784\u89e3\u6790"},"content":{"rendered":"<p>\u901a\u8fc7 create_agent() \u53ef\u4ee5\u521b\u5efa Agent \u5bf9\u8c61\u3002\u521b\u5efa\u540e\u7684 Agent \u652f\u6301\u4e24\u79cd\u5e38\u89c1\u6267\u884c\u65b9\u5f0f&#xff1a;<\/p>\n<ul>\n<li>invoke()&#xff1a;\u7b49\u5f85 Agent \u6267\u884c\u5b8c\u6210&#xff0c;\u4e00\u6b21\u6027\u83b7\u5f97\u6700\u7ec8\u7ed3\u679c\u3002<\/li>\n<li>stream()&#xff1a;\u5728 Agent \u6267\u884c\u8fc7\u7a0b\u4e2d&#xff0c;\u9010\u6b65\u83b7\u5f97\u8fd0\u884c\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p>\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd Agent \u7684\u6d41\u5f0f\u8f93\u51fa&#xff0c;\u4ee5\u53ca\u4e0b\u9762\u8fd9\u884c\u4ee3\u7801\u7684\u4f5c\u7528&#xff1a;<\/p>\n<h3>\u4e00\u3001\u5b8c\u6574\u4ee3\u7801<\/h3>\n<p>\u4e0b\u9762\u521b\u5efa\u4e24\u4e2a\u80a1\u7968\u67e5\u8be2\u5de5\u5177&#xff0c;\u7136\u540e\u8ba9 Agent \u67e5\u8be2\u201c\u4f20\u667a\u6559\u80b2\u201d\u7684\u80a1\u4ef7\u548c\u516c\u53f8\u4fe1\u606f\u3002<\/p>\n<p><span class=\"token keyword\">from<\/span> langchain<span class=\"token punctuation\">.<\/span>agents <span class=\"token keyword\">import<\/span> create_agent<br \/>\n<span class=\"token keyword\">from<\/span> langchain_community<span class=\"token punctuation\">.<\/span>chat_models<span class=\"token punctuation\">.<\/span>tongyi <span class=\"token keyword\">import<\/span> ChatTongyi<br \/>\n<span class=\"token keyword\">from<\/span> langchain_core<span class=\"token punctuation\">.<\/span>tools <span class=\"token keyword\">import<\/span> tool<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;tool<\/span><span class=\"token punctuation\">(<\/span>description<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;\u83b7\u53d6\u80a1\u4ef7&#xff0c;\u4f20\u5165\u80a1\u7968\u540d\u79f0&#xff0c;\u8fd4\u56de\u5b57\u7b26\u4e32\u4fe1\u606f&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">get_price<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u80a1\u7968<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>name<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">\u7684\u4ef7\u683c\u662f20\u5143&#034;<\/span><\/span><\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;tool<\/span><span class=\"token punctuation\">(<\/span>description<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;\u83b7\u53d6\u80a1\u7968\u4fe1\u606f&#xff0c;\u4f20\u5165\u80a1\u7968\u540d\u79f0&#xff0c;\u8fd4\u56de\u5b57\u7b26\u4e32\u4fe1\u606f&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">get_info<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u80a1\u7968<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>name<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#xff0c;\u662f\u4e00\u5bb6A\u80a1\u4e0a\u5e02\u516c\u53f8&#xff0c;\u4e13\u6ce8\u4e8eIT\u804c\u4e1a\u6559\u80b2\u3002&#034;<\/span><\/span><\/p>\n<p>agent <span class=\"token operator\">&#061;<\/span> create_agent<span class=\"token punctuation\">(<\/span><br \/>\n    model<span class=\"token operator\">&#061;<\/span>ChatTongyi<span class=\"token punctuation\">(<\/span>model<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;qwen3-max&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    tools<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span>get_price<span class=\"token punctuation\">,<\/span> get_info<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    system_prompt<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;\u4f60\u662f\u4e00\u4e2a\u667a\u80fd\u52a9\u624b&#xff0c;\u53ef\u4ee5\u56de\u7b54\u80a1\u7968\u76f8\u5173\u95ee\u9898&#034;<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">for<\/span> chunk <span class=\"token keyword\">in<\/span> agent<span class=\"token punctuation\">.<\/span>stream<span class=\"token punctuation\">(<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;messages&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;role&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;user&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#034;content&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u4f20\u667a\u6559\u80b2\u80a1\u4ef7\u591a\u5c11&#xff0c;\u5e76\u4ecb\u7ecd\u4e00\u4e0b&#034;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    stream_mode<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;values&#034;<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    latest_message <span class=\"token operator\">&#061;<\/span> chunk<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;messages&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> latest_message<span class=\"token punctuation\">.<\/span>content<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token builtin\">type<\/span><span class=\"token punctuation\">(<\/span>latest_message<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>__name__<span class=\"token punctuation\">,<\/span><br \/>\n            latest_message<span class=\"token punctuation\">.<\/span>content<br \/>\n        <span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> latest_message<span class=\"token punctuation\">.<\/span>tool_calls<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                <span class=\"token string\">&#034;\u5de5\u5177\u8c03\u7528&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token punctuation\">[<\/span>tc<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token keyword\">for<\/span> tc <span class=\"token keyword\">in<\/span> latest_message<span class=\"token punctuation\">.<\/span>tool_calls<span class=\"token punctuation\">]<\/span><br \/>\n            <span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">except<\/span> AttributeError<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">pass<\/span><\/p>\n<p>\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b&#xff1a;<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260805101706-6a730da221de9.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u4e8c\u3001stream_mode&#061;&#034;values&#034; \u8fd4\u56de\u4ec0\u4e48&#xff1f;<\/h3>\n<p>stream_mode<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;values&#034;<\/span><\/p>\n<p>\u4e4b\u540e&#xff0c;Agent \u6bcf\u5b8c\u6210\u4e00\u4e2a\u6267\u884c\u6b65\u9aa4&#xff0c;\u90fd\u4f1a\u8fd4\u56de\u5f53\u524d\u65f6\u523b\u7684\u5b8c\u6574\u72b6\u6001\u3002<\/p>\n<p>\u6bcf\u4e2a chunk \u90fd\u662f\u4e00\u4e2a\u5b57\u5178&#xff0c;\u6838\u5fc3\u7ed3\u6784\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token string\">&#034;messages&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n        HumanMessage<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        AIMessage<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        ToolMessage<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        AIMessage<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>ToolMessage&#xff1a;\u5de5\u5177\u6267\u884c\u540e\u8fd4\u56de\u7684\u7ed3\u679c\u3002<\/li>\n<\/ul>\n<p>Agent \u6267\u884c\u8fc7\u7a0b\u4e2d&#xff0c;messages \u5217\u8868\u4f1a\u4e0d\u65ad\u53d8\u957f\u3002<\/p>\n<p>\u4f8b\u5982\u7b2c\u4e00\u6b21\u53ef\u80fd\u53ea\u6709\u7528\u6237\u6d88\u606f&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span><br \/>\n    HumanMessage<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u6a21\u578b\u51b3\u5b9a\u8c03\u7528\u5de5\u5177\u540e&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span><br \/>\n    HumanMessage<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    AIMessage<span class=\"token punctuation\">(<\/span>tool_calls<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u5de5\u5177\u6267\u884c\u5b8c\u6210\u540e&#xff1a;<\/p>\n<p><span class=\"token punctuation\">[<\/span><br \/>\n    HumanMessage<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    AIMessage<span class=\"token punctuation\">(<\/span>tool_calls<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    ToolMessage<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    ToolMessage<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">.<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">]<\/span><\/p>\n<h3>\u4e09\u3001\u4e3a\u4ec0\u4e48\u4f7f\u7528 chunk[&#034;messages&#034;][-1]&#xff1f;<\/h3>\n<p>latest_message <span class=\"token operator\">&#061;<\/span> chunk<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;messages&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>\u8868\u793a\u83b7\u53d6 Agent \u5f53\u524d\u72b6\u6001\u4e2d\u7684\u6700\u540e\u4e00\u6761\u6d88\u606f&#xff0c;\u4e5f\u5c31\u662f\u6700\u8fd1\u4ea7\u751f\u7684\u6d88\u606f\u3002<\/p>\n<p>\u5982\u679c\u76f4\u63a5\u904d\u5386\u6574\u4e2a\u5217\u8868&#xff1a;<\/p>\n<p><span class=\"token keyword\">for<\/span> message <span class=\"token keyword\">in<\/span> chunk<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;messages&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u7531\u4e8e\u6bcf\u4e2a chunk \u90fd\u5305\u542b\u5b8c\u6574\u6d88\u606f\u5386\u53f2&#xff0c;\u4e4b\u524d\u7684\u6d88\u606f\u4f1a\u88ab\u91cd\u590d\u6253\u5370\u3002<\/p>\n<p>\u4f7f\u7528 [-1]&#xff0c;\u5219\u6bcf\u6b21\u53ea\u67e5\u770b\u6700\u540e\u4e00\u6761\u6d88\u606f&#xff0c;\u8f93\u51fa\u4f1a\u66f4\u52a0\u6e05\u6670\u3002<\/p>\n<h3>\u56db\u3001content \u548c tool_calls \u5206\u522b\u662f\u4ec0\u4e48&#xff1f;<\/h3>\n<p>\u8fd9\u4e24\u4e2a\u90fd\u662f Message\u5bf9\u8c61\u7684\u5c5e\u6027<\/p>\n<p>\u63d0\u53d6\u6700\u65b0\u6d88\u606f\u540e&#xff0c;\u4e3b\u8981\u8bfb\u53d6\u4e24\u4e2a\u5c5e\u6027&#xff1a;<\/p>\n<p>latest_message<span class=\"token punctuation\">.<\/span>content<br \/>\nlatest_message<span class=\"token punctuation\">.<\/span>tool_calls<\/p>\n<h4>1. content<\/h4>\n<p>content \u4fdd\u5b58\u6d88\u606f\u4e2d\u7684\u6587\u5b57\u5185\u5bb9\u3002<\/p>\n<p>\u6bd4\u5982\u6a21\u578b\u6700\u7ec8\u56de\u7b54&#xff1a;<\/p>\n<p>AIMessage<span class=\"token punctuation\">(<\/span><br \/>\n    content<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;\u4f20\u667a\u6559\u80b2\u5f53\u524d\u80a1\u4ef7\u4e3a20\u5143\u2026\u2026&#034;<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> latest_message<span class=\"token punctuation\">.<\/span>content<span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>latest_message<span class=\"token punctuation\">.<\/span>content<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\">#\u8f93\u51fa\u6d88\u606f\u4e2d\u7684\u6587\u672c\u3002<\/span><\/p>\n<h4>2. tool_calls<\/h4>\n<p>tool_calls \u4fdd\u5b58\u6a21\u578b\u4ea7\u751f\u7684\u5de5\u5177\u8c03\u7528\u8bf7\u6c42\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>AIMessage<span class=\"token punctuation\">(<\/span><br \/>\n    content<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    tool_calls<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;get_price&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;args&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u4f20\u667a\u6559\u80b2&#034;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;call_xxx&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;type&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;tool_call&#034;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5176\u4e2d&#xff1a;<\/p>\n<ul>\n<li>name&#xff1a;\u8c03\u7528\u7684\u5de5\u5177\u540d\u79f0\u3002<\/li>\n<li>args&#xff1a;\u4f20\u9012\u7ed9\u5de5\u5177\u7684\u53c2\u6570\u3002<\/li>\n<li>id&#xff1a;\u672c\u6b21\u5de5\u5177\u8c03\u7528\u7684\u552f\u4e00\u6807\u8bc6\u3002<\/li>\n<\/ul>\n<p><span class=\"token punctuation\">[<\/span>tc<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token keyword\">for<\/span> tc <span class=\"token keyword\">in<\/span> latest_message<span class=\"token punctuation\">.<\/span>tool_calls<span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token comment\">#\u4f1a\u63d0\u53d6\u6240\u6709\u51c6\u5907\u8c03\u7528\u7684\u5de5\u5177\u540d\u79f0\u3002<\/span><\/p>\n<h3>\u4e94\u3001\u4e3a\u4ec0\u4e48 tool_calls \u4f1a\u51fa\u73b0\u4e24\u6b21&#xff1f;<\/h3>\n<p>\u6253\u5370\u5b8c\u6574\u7684 AIMessage \u65f6&#xff0c;\u4f1a\u770b\u5230&#xff1a;<\/p>\n<p>AIMessage<span class=\"token punctuation\">(<\/span><br \/>\n    content<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>    additional_kwargs<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;tool_calls&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;function&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token string\">&#034;arguments&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#039;{&#034;name&#034;: &#034;\u4f20\u667a\u6559\u80b2&#034;}&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                    <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;get_price&#034;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>    tool_calls<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;get_price&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;args&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u4f20\u667a\u6559\u80b2&#034;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5de5\u5177\u8c03\u7528\u540c\u65f6\u51fa\u73b0\u5728&#xff1a;<\/p>\n<p>additional_kwargs<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;tool_calls&#034;<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>message<span class=\"token punctuation\">.<\/span>tool_calls<\/p>\n<p>\u8fd9\u4e24\u4e2a\u4f4d\u7f6e\u7684\u4f5c\u7528\u4e0d\u540c\u3002<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260805101706-6a730da2a876b.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>additional_kwargs<\/h4>\n<p>\u8fd9\u91cc\u901a\u5e38\u4fdd\u5b58\u6a21\u578b\u63a5\u53e3\u8fd4\u56de\u7684\u9644\u52a0\u6570\u636e&#xff0c;\u5176\u7ed3\u6784\u66f4\u63a5\u8fd1\u6a21\u578b\u539f\u59cb\u8fd4\u56de\u7ed3\u679c\u3002<\/p>\n<p>additional_kwargs \u672c\u8eab\u662f\u4e00\u4e2a Python \u5b57\u5178&#xff0c;\u7528\u4e8e\u4fdd\u5b58\u6a21\u578b\u8fd4\u56de\u7684\u9644\u52a0\u6570\u636e\u3002\u5176\u4e2d\u5de5\u5177\u53c2\u6570 function.arguments \u53ef\u80fd\u4ecd\u7136\u662f JSON \u683c\u5f0f\u7684\u5b57\u7b26\u4e32<\/p>\n<p><span class=\"token string\">&#034;arguments&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#039;{&#034;name&#034;: &#034;\u4f20\u667a\u6559\u80b2&#034;}&#039;<\/span><\/p>\n<h4>tool_calls<\/h4>\n<p>LangChain \u4f1a\u5bf9\u5de5\u5177\u8c03\u7528\u6570\u636e\u8fdb\u884c\u89e3\u6790\u548c\u7edf\u4e00\u5c01\u88c5&#xff1a;<\/p>\n<p> tool_calls<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span>   <span class=\"token comment\">#\u5982\u679c\u8c03\u7528\u591a\u4e2a\u5de5\u5177 \u5c31\u4f1a\u6709\u591a\u4e2a\u5b57\u5178<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;get_price&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;args&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;\u4f20\u667a\u6559\u80b2&#034;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><\/p>\n<p>\u8fd9\u6837\u4e0d\u7ba1\u5e95\u5c42\u4f7f\u7528\u54ea\u4e2a\u6a21\u578b&#xff0c;\u90fd\u53ef\u4ee5\u901a\u8fc7\u7edf\u4e00\u65b9\u5f0f\u8bfb\u53d6\u5de5\u5177\u8c03\u7528\u3002<\/p>\n<h3>\u516d\u3001\u603b\u7ed3<\/h3>\n<p>stream_mode&#061;&#034;values&#034; \u8fd4\u56de\u7684\u662f Agent \u6bcf\u4e00\u6b65\u6267\u884c\u540e\u7684\u5b8c\u6574\u72b6\u6001&#xff0c;\u5176\u4e2d\u6700\u91cd\u8981\u7684\u6570\u636e\u662f&#xff1a;<\/p>\n<p>chunk<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;messages&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token comment\">#\u5b83\u4fdd\u5b58\u4e86 Agent \u5f53\u524d\u79ef\u7d2f\u7684\u5168\u90e8\u6d88\u606f\u3002<\/span><\/p>\n<p>latest_message <span class=\"token operator\">&#061;<\/span> chunk<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;messages&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token comment\">#\u8868\u793a\u4ece\u5b8c\u6574\u6d88\u606f\u5217\u8868\u4e2d\u53d6\u51fa\u6700\u540e\u4e00\u6761\u6d88\u606f&#xff0c;\u907f\u514d\u91cd\u590d\u5904\u7406\u4ee5\u524d\u5df2\u7ecf\u51fa\u73b0\u8fc7\u7684\u5185\u5bb9\u3002<\/span><\/p>\n<p>\u6d88\u606f\u4e2d\u7684\u4e24\u4e2a\u5e38\u7528\u5c5e\u6027\u5206\u522b\u662f&#xff1a;<\/p>\n<p>message<span class=\"token punctuation\">.<\/span>content    <span class=\"token comment\">#\u7528\u4e8e\u83b7\u53d6\u6587\u5b57\u5185\u5bb9&#xff1b;<\/span><\/p>\n<p>message<span class=\"token punctuation\">.<\/span>tool_calls <span class=\"token comment\">#\u7528\u4e8e\u83b7\u53d6\u6a21\u578b\u51c6\u5907\u8c03\u7528\u7684\u5de5\u5177\u53ca\u5176\u53c2\u6570\u3002<\/span><\/p>\n<p>\u6574\u4e2a\u6267\u884c\u8fc7\u7a0b\u53ef\u4ee5\u7b80\u5355\u6982\u62ec\u4e3a&#xff1a;<\/p>\n<p>\u7528\u6237\u95ee\u9898<br \/>\n    \u2193<br \/>\n\u6a21\u578b\u51b3\u5b9a\u8c03\u7528\u5de5\u5177<br \/>\n    \u2193<br \/>\n\u5de5\u5177\u8fd4\u56de\u67e5\u8be2\u7ed3\u679c<br \/>\n    \u2193<br \/>\n\u6a21\u578b\u6574\u5408\u7ed3\u679c<br \/>\n    \u2193<br \/>\n\u751f\u6210\u6700\u7ec8\u56de\u7b54<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u901a\u8fc7 create_agent() \u53ef\u4ee5\u521b\u5efa Agent \u5bf9\u8c61\u3002\u521b\u5efa\u540e\u7684 Agent \u652f\u6301\u4e24\u79cd\u5e38\u89c1\u6267\u884c\u65b9\u5f0f&#xff1a;<br \/>\ninvoke()&#xff1a;\u7b49\u5f85 Agent \u6267\u884c\u5b8c\u6210&#xff0c;\u4e00\u6b21\u6027\u83b7\u5f97\u6700\u7ec8\u7ed3\u679c\u3002stream()&#xff1a;\u5728 Agent \u6267\u884c\u8fc7\u7a0b\u4e2d&#xff0c;\u9010\u6b65\u83b7\u5f97\u8fd0\u884c\u72b6\u6001\u3002<br \/>\n\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd Agent \u7684\u6d41\u5f0f\u8f93\u51fa&#xff0c;\u4ee5\u53ca\u4e0b\u9762\u8fd9\u884c\u4ee3\u7801\u7684\u4f5c\u7528&#xff1a;<br \/>\n\u4e00\u3001\u5b8c\u6574\u4ee3\u7801<br \/>\n\u4e0b\u9762\u521b\u5efa\u4e24\u4e2a\u80a1\u7968\u67e5\u8be2\u5de5\u5177&#xff0c;\u7136\u540e\u8ba9 Agent \u67e5<\/p>\n","protected":false},"author":2,"featured_media":90632,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[10187,997,81,1813],"topic":[],"class_list":["post-90634","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-codingplan","tag-langchain","tag-python","tag-1813"],"yoast_head":"<!-- This site is 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