Describe the problem/error/question
When using Python in a Code node, will cause an error.
What is the error message (if any)?
Problem in node ‘Code in Python (Beta)‘
RuntimeError: Blocked for security reasons
I’ve added - N8N_ALLOWED_NETWORKS=0.0.0.0/0
- NODE_FUNCTION_ALLOW_EXTERNAL=* to my Docker Compose configuration.
I’ve also shut down and restarted Docker Compose.
But the issue persists.
Node type
n8n-nodes-base.code
Node version
2 (Latest)
n8n version
1.114.4 (Self Hosted)
Stack trace
Error: RuntimeError: Blocked for security reasons at PythonSandbox.getPrettyError (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-nodes-base@file+packages+nodes-base_@[email protected]_asn1.js@5_afd197edb2c1f848eae21a96a97fab23/node_modules/n8n-nodes-base/nodes/Code/PythonSandbox.ts:101:11) at PythonSandbox.runCodeInPython (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-nodes-base@file+packages+nodes-base_@[email protected]_asn1.js@5_afd197edb2c1f848eae21a96a97fab23/node_modules/n8n-nodes-base/nodes/Code/PythonSandbox.ts:85:15) at PythonSandbox.runCodeAllItems (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-nodes-base@file+packages+nodes-base_@[email protected]_asn1.js@5_afd197edb2c1f848eae21a96a97fab23/node_modules/n8n-nodes-base/nodes/Code/PythonSandbox.ts:46:27) at ExecuteContext.execute (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-nodes-base@file+packages+nodes-base_@[email protected]_asn1.js@5_afd197edb2c1f848eae21a96a97fab23/node_modules/n8n-nodes-base/nodes/Code/Code.node.ts:198:14) at WorkflowExecute.executeNode (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_@[email protected]_@[email protected]_08b575bec2313d5d8a4cc75358971443/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1091:8) at WorkflowExecute.runNode (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_@[email protected]_@[email protected]_08b575bec2313d5d8a4cc75358971443/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1272:11) at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_@[email protected]_@[email protected]_08b575bec2313d5d8a4cc75358971443/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1673:27 at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_@[email protected]_@[email protected]_08b575bec2313d5d8a4cc75358971443/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:2287:11
Please share your workflow
(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.){
"nodes": [
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
0,
0
],
"id": "21617019-a62f-4f07-8dfb-aae30432e8d5",
"name": "When clicking ‘Execute workflow’"
},
{
"parameters": {
"url": "https://news.ycombinator.com/",
"options": {}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
224,
0
],
"id": "484be7b7-d24d-4223-9cfa-2c86ef591349",
"name": "HTTP Request"
},
{
"parameters": {
"operation": "extractHtmlContent",
"extractionValues": {
"values": [
{
"key": "序号",
"cssSelector": "tr .athing .rank",
"returnArray": true
},
{
"key": "文章标题",
"cssSelector": "tr .titleline >a",
"returnArray": true
},
{
"key": "项目ID待处理",
"cssSelector": "tr .subtext .age",
"returnArray": true
},
{
"key": "发布时间UTC待处理",
"cssSelector": "tr .subtext .age",
"returnValue": "attribute",
"attribute": "title",
"returnArray": true
},
{
"key": "打分",
"cssSelector": "tr .subtext .score",
"returnArray": true
},
{
"key": "评论数",
"cssSelector": ".subline > a:nth-last-of-type(1)",
"returnArray": true
},
{
"key": "文章链接",
"cssSelector": "tr .titleline >a",
"returnValue": "attribute",
"attribute": "href",
"returnArray": true
}
]
},
"options": {}
},
"type": "n8n-nodes-base.html",
"typeVersion": 1.2,
"position": [
432,
0
],
"id": "506bf0f5-a58d-4521-8a6c-65d4e095ad57",
"name": "HTML"
},
{
"parameters": {
"language": "python",
"pythonCode": "# 准备一个空列表，用于存放我们处理后的新项目\nprocessed_items = []\n\n# --- 遍历所有输入的项目 ---\n# 这个循环会为你的每一个 item (每一行数据) 都执行一次\nfor item in _input.all():\n # 从当前 item 的 json 数据中安全地获取 '评论链接'\n comment_link = item.json.get('评论链接')\n \n # 只有当链接存在时，我们才为它创建一个新项目\n if comment_link:\n # --- 构建一个新的、只包含 '评论链接' 字段的项目 ---\n new_item = {\n 'json': {\n '评论链接': comment_link\n }\n }\n \n # 将这个新创建的、干净的项目添加到我们的结果列表中\n processed_items.append(new_item)\n\n# 返回由多个独立项目组成的新列表\nreturn processed_items"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
800,
192
],
"id": "1233e598-db7e-4adb-bf51-d213afde50e2",
"name": "保留评论链接"
},
{
"parameters": {
"language": "python",
"pythonCode": "from datetime import datetime, timedelta\nimport re\n\n# 你的输入只有一个 item，所以这个循环只会执行一次\nfor item in _input.all():\n json_data = item.json\n\n # --- 1. 处理 '项目ID待处理' 列表 ---\n project_ids_raw_list = json_data.get('项目ID待处理', [])\n processed_links = [] # 创建一个新列表来存放处理后的结果\n \n # 内部循环，遍历列表中的每一个链接字符串\n for link_str in project_ids_raw_list:\n try:\n extracted_id = link_str.split('[')[1].split(']')[0]\n full_link = f\"https://news.ycombinator.com/{extracted_id}\"\n processed_links.append(full_link)\n except (IndexError, AttributeError):\n processed_links.append('格式错误')\n \n # 用处理好的新列表替换旧字段，并重命名\n json_data['评论链接'] = processed_links\n if '项目ID待处理' in json_data:\n del json_data['项目ID待处理']\n\n # --- 2. 处理 '发布时间UTC待处理' 列表 ---\n publish_times_raw_list = json_data.get('发布时间UTC待处理', [])\n processed_times = []\n \n for time_str in publish_times_raw_list:\n try:\n time_part = time_str.split(' ')[0]\n utc_time = datetime.strptime(time_part, '%Y-%m-%dT%H:%M:%S')\n beijing_time = utc_time + timedelta(hours=8)\n formatted_time = beijing_time.strftime('%Y-%m-%d %H:%M:%S')\n processed_times.append(formatted_time)\n except (ValueError, IndexError, AttributeError):\n processed_times.append('时间格式错误')\n\n json_data['北京发布时间'] = processed_times\n if '发布时间UTC待处理' in json_data:\n del json_data['发布时间UTC待处理']\n \n # --- 3. 处理 '打分' 列表 ---\n scores_raw_list = json_data.get('打分', [])\n processed_scores = []\n \n for score_str in scores_raw_list:\n try:\n # 确保 score_str 是字符串，以防列表中有 None 或其他类型\n score_value = int(str(score_str).replace('points', '').strip())\n processed_scores.append(score_value)\n except (ValueError, AttributeError):\n processed_scores.append(0) # 如果转换失败，给一个默认值 0\n\n json_data['打分'] = processed_scores\n \n # --- 4. 处理 '评论数' 列表 ---\n comments_raw_list = json_data.get('评论数', [])\n processed_comments = []\n \n for comment_str in comments_raw_list:\n match = re.search(r'\\d+', str(comment_str))\n if match:\n processed_comments.append(int(match.group(0)))\n else:\n processed_comments.append(0)\n\n json_data['评论数'] = processed_comments\n\n# 返回被修改后的项目 (仍然只有一个 item)\nreturn _input.all()"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
640,
0
],
"id": "90479bc4-485d-4afb-8e1b-69954d2daa38",
"name": "网页内容"
},
{
"parameters": {
"language": "python",
"pythonCode": "import requests\n# 导入所需的库\nimport requests\nfrom bs4 import BeautifulSoup\n\n# --- 定义一个可复用的爬虫函数 ---\ndef scrape_web_content(url):\n \"\"\"\n 接收一个 URL，爬取其网页内容，并返回HTML文本。\n 包含基本的错误处理和超时设置。\n \"\"\"\n # 检查URL是否有效\n if not url or not isinstance(url, str) or not url.startswith('http'):\n return \"无效或空的 URL\"\n\n headers = {\n 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36'\n }\n\n try:\n # 发送 HTTP GET 请求\n response = requests.get(url, headers=headers, timeout=10)\n response.raise_for_status() # 如果请求失败 (如 404, 503), 则抛出异常\n \n # 直接返回响应的文本内容 (HTML)\n return response.text\n\n except requests.exceptions.RequestException as e:\n return f\"爬取失败: {e}\"\n except Exception as e:\n return f\"处理时发生未知错误: {e}\"\n\n# --- 主逻辑：遍历 n8n 的输入项目 ---\n# 这个循环会为你的每一个 item (每一行数据) 都执行一次\nfor item in _input.all():\n json_data = item.json\n\n # 1. 从当前 item 中获取 '评论链接'\n comment_url = json_data.get('评论链接')\n \n # 2. 调用爬虫函数抓取内容\n comment_content = scrape_web_content(comment_url)\n \n # 3. 将爬取到的内容添加到当前 item 的 json 数据中，创建新字段 '评论内容'\n item.json['评论内容'] = comment_content\n\n# 返回被修改后的所有项目\nreturn _input.all()"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1008,
192
],
"id": "868d0b9a-7184-4085-8e02-961a4f2efd5d",
"name": "Code in Python (Beta)"
}
],
"connections": {
"When clicking ‘Execute workflow’": {
"main": [
[
{
"node": "HTTP Request",
"type": "main",
"index": 0
}
]
]
},
"HTTP Request": {
"main": [
[
{
"node": "HTML",
"type": "main",
"index": 0
}
]
]
},
"HTML": {
"main": [
[
{
"node": "网页内容",
"type": "main",
"index": 0
}
]
]
},
"保留评论链接": {
"main": [
[
{
"node": "Code in Python (Beta)",
"type": "main",
"index": 0
}
]
]
},
"网页内容": {
"main": [
[
{
"node": "保留评论链接",
"type": "main",
"index": 0
}
]
]
}
},
"pinData": {
"网页内容": [
{
"序号": [
"1.",
"2.",
"3.",
"4.",
"5.",
"6.",
"7.",
"8.",
"9.",
"10.",
"11.",
"12.",
"13.",
"14.",
"15.",
"16.",
"17.",
"18.",
"19.",
"20.",
"21.",
"22.",
"23.",
"24.",
"25.",
"26.",
"27.",
"28.",
"29.",
"30."
],
"文章标题": [
"Meta Superintelligence's surprising first paper",
"Pipelining in psql (PostgreSQL 18)",
"The Flummoxagon",
"Show HN: Rift – A tiling window manager for macOS",
"Show HN: Sober not Sorry – free iOS tracker to help you quit bad habits",
"I/O Multiplexing (select vs. poll vs. epoll/kqueue)",
"4x faster LLM inference (Flash Attention guy's company)",
"Coral Protocol: Open infrastructure connecting the internet of agents",
"Ask HN: Abandoned/dead projects you think died before their time and why?",
"Anthropic's Prompt Engineering Tutorial",
"Vancouver Stock Exchange: Scam capital of the world (1989) [pdf]",
"The World's 2.75B Buildings",
"Show HN: A Lisp Interpreter for Shell Scripting",
"Paper2Video: Automatic Video Generation from Scientific Papers",
"A Guide for WireGuard VPN Setup with Pi-Hole Adblock and Unbound DNS",
"Microsoft only lets you opt out of AI photo scanning 3x a year",
"CamoLeak: Critical GitHub Copilot Vulnerability Leaks Private Source Code",
"Testing two 18 TB white label SATA hard drives from datablocks.dev",
"LineageOS 23",
"Windows Subsystem for FreeBSD",
"Show HN: I made an esoteric programming language that's read like a spellbook",
"Superpowers: How I'm using coding agents in October 2025",
"Google blocks Android hack that let Pixel users enable VoLTE anywhere",
"The <output> Tag",
"The World Trade Center under construction through photos, 1966-1979",
"How Apple designs a virtual knob (2012)",
"Floating Electrons on a Sea of Helium",
"Vibing a non-trivial Ghostty feature",
"Beyond indexes: How open table formats optimize query performance",
"Spyware maker NSO Group confirms acquisition by US investors"
],
"打分": [
301,
90,
39,
144,
29,
56,
7,
26,
135,
167,
94,
61,
59,
53,
88,
629,
44,
181,
240,
261,
16,
361,
164,
768,
217,
143,
8,
270,
64,
108
],
"评论数": [
160,
13,
5,
65,
23,
12,
0,
4,
414,
18,
41,
23,
8,
12,
10,
217,
9,
108,
93,
107,
1,
191,
58,
171,
105,
91,
0,
125,
3,
72
],
"文章链接": [
"https://paddedinputs.substack.com/p/meta-superintelligences-surprising",
"https://postgresql.verite.pro/blog/2025/10/01/psql-pipeline.html",
"https://n-e-r-v-o-u-s.com/blog/?p=9827",
"https://github.com/acsandmann/rift",
"https://sobernotsorry.app/",
"https://nima101.github.io/io_multiplexing",
"https://www.together.ai/blog/adaptive-learning-speculator-system-atlas",
"https://arxiv.org/abs/2505.00749",
"item?id=45553132",
"https://github.com/anthropics/prompt-eng-interactive-tutorial",
"https://scamcouver.wordpress.com/wp-content/uploads/2012/04/scam-capital.pdf",
"https://tech.marksblogg.com/building-footprints-gba.html",
"https://github.com/gue-ni/redstart",
"https://arxiv.org/abs/2510.05096",
"https://psyonik.tech/posts/a-guide-for-wireguard-vpn-setup-with-pi-hole-adblock-and-unbound-dns/",
"https://hardware.slashdot.org/story/25/10/11/0238213/microsofts-onedrive-begins-testing-face-recognizing-ai-for-photos-for-some-preview-users",
"https://www.legitsecurity.com/blog/camoleak-critical-github-copilot-vulnerability-leaks-private-source-code",
"https://ounapuu.ee/posts/2025/10/06/datablocks-white-label-drives/",
"https://lineageos.org/Changelog-30/",
"https://github.com/BalajeS/WSL-For-FreeBSD",
"https://github.com/sirbread/spellscript",
"https://blog.fsck.com/2025/10/09/superpowers/",
"https://www.androidauthority.com/pixel-ims-broken-october-update-3606444/",
"https://denodell.com/blog/html-best-kept-secret-output-tag",
"https://rarehistoricalphotos.com/twin-towers-construction-photographs/",
"https://jherrm.github.io/knobs/",
"https://arstechnica.com/science/2025/10/new-qubit-tech-traps-single-electrons-on-liquid-helium/",
"https://mitchellh.com/writing/non-trivial-vibing",
"https://jack-vanlightly.com/blog/2025/10/8/beyond-indexes-how-open-table-formats-optimize-query-performance",
"https://techcrunch.com/2025/10/10/spyware-maker-nso-group-confirms-acquisition-by-us-investors/"
],
"评论链接": [
"https://news.ycombinator.com/item?id=45553577",
"https://news.ycombinator.com/item?id=45555308",
"https://news.ycombinator.com/item?id=45504540",
"https://news.ycombinator.com/item?id=45553995",
"https://news.ycombinator.com/item?id=45555873",
"https://news.ycombinator.com/item?id=45523370",
"https://news.ycombinator.com/item?id=45556474",
"https://news.ycombinator.com/item?id=45555012",
"https://news.ycombinator.com/item?id=45553132",
"https://news.ycombinator.com/item?id=45551260",
"https://news.ycombinator.com/item?id=45553783",
"https://news.ycombinator.com/item?id=45506055",
"https://news.ycombinator.com/item?id=45520585",
"https://news.ycombinator.com/item?id=45553701",
"https://news.ycombinator.com/item?id=45552049",
"https://news.ycombinator.com/item?id=45551504",
"https://news.ycombinator.com/item?id=45553422",
"https://news.ycombinator.com/item?id=45489497",
"https://news.ycombinator.com/item?id=45553835",
"https://news.ycombinator.com/item?id=45547359",
"https://news.ycombinator.com/item?id=45555523",
"https://news.ycombinator.com/item?id=45547344",
"https://news.ycombinator.com/item?id=45553764",
"https://news.ycombinator.com/item?id=45547566",
"https://news.ycombinator.com/item?id=45498055",
"https://news.ycombinator.com/item?id=45506748",
"https://news.ycombinator.com/item?id=45515842",
"https://news.ycombinator.com/item?id=45549434",
"https://news.ycombinator.com/item?id=45516964",
"https://news.ycombinator.com/item?id=45555570"
],
"北京发布时间": [
"2025-10-12 07:16:05",
"2025-10-12 12:46:57",
"2025-10-07 23:40:09",
"2025-10-12 08:22:15",
"2025-10-12 14:46:58",
"2025-10-09 12:06:43",
"2025-10-12 16:37:01",
"2025-10-12 11:41:29",
"2025-10-12 06:16:18",
"2025-10-12 02:06:40",
"2025-10-12 07:43:42",
"2025-10-08 01:26:20",
"2025-10-09 04:58:37",
"2025-10-12 07:32:25",
"2025-10-12 03:41:27",
"2025-10-12 02:36:51",
"2025-10-12 06:58:30",
"2025-10-06 17:36:08",
"2025-10-12 07:53:17",
"2025-10-11 15:32:08",
"2025-10-12 13:31:00",
"2025-10-11 15:29:23",
"2025-10-12 07:41:00",
"2025-10-11 16:27:26",
"2025-10-07 08:40:26",
"2025-10-08 02:19:37",
"2025-10-08 21:18:25",
"2025-10-11 22:31:15",
"2025-10-08 23:01:06",
"2025-10-12 13:39:22"
]
}
]
},
"meta": {
"instanceId": "4c3a751e7d3935ecf344bab5378e53107b88fe3e154ce293c458a770a6ca1bdd"
}
}
Share the output returned by the last node
Information on your n8n setup
- **n8n version:**1.114.4
- **Database (default: SQLite):**sqlite
- n8n EXECUTIONS_PROCESS setting (default: own, main):own
- Running n8n via (Docker, npm, n8n cloud, desktop app):Docker
- Operating system:Mac OS Sequoia 15.6.1