petya
75601988c2
- Cover, TOC, 5 dividers, 3 recap slides - 5 sections (chains, langgraph, deepagents, openswe, ecosystem) - design-system.js with theme tokens + 9 helper functions - research/: timeline + sources + per-tech notes - final-compile.js + merge.js for rebuild pipeline - output/: langchain-evolution.pptx (2.3 MB) + langchain-evolution.pdf (1.1 MB) + 7 sample previews
52 lines
1.8 KiB
JavaScript
52 lines
1.8 KiB
JavaScript
// Slide 05: ChatModels -- provider routing through init_chat_model
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// Code slide: how to switch providers without changing call sites.
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const ds = require('./design-system');
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function createSlide(pres, theme) {
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const slide = pres.addSlide();
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ds.helpers.slideBase(slide, pres, theme);
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ds.helpers.addHeader(slide, pres, theme, {
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eyebrow: 'STAGE 1: CHAINS',
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section: 'ChatModels',
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title: 'Переключение провайдера -- одна строка',
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sectionNumber: 1,
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});
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ds.helpers.addCodeBlock(slide, pres, theme, {
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x: 0.5, y: 1.5, w: 9.0, h: 3.25,
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language: 'python',
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filePath: 'examples/multi_provider.py',
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code: [
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'from langchain.chat_models import init_chat_model',
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'',
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'# OpenAI',
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'm_openai = init_chat_model("openai:gpt-4.1-mini")',
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'',
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'# Anthropic',
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'm_anthropic = init_chat_model("anthropic:claude-3-7-sonnet-latest")',
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'',
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'# Google Vertex AI',
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'm_google = init_chat_model("google_vertexai:gemini-2.0-flash")',
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'',
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'# Все три -- объекты BaseChatModel. Один и тот же .invoke()',
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'for m in [m_openai, m_anthropic, m_google]:',
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' print(type(m).__name__, ":", m.invoke("ping").content[:30])',
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].join('\n'),
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});
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// Bottom callout -- env vars
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ds.helpers.addCallout(slide, pres, theme, {
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x: 0.5, y: 4.85, w: 9.0, h: 0.3,
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kind: 'warning',
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text: 'Нужны API-ключи в env: OPENAI_API_KEY / ANTHROPIC_API_KEY / GOOGLE_API_KEY -- провайдер-пакет сам их подхватит.',
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});
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ds.helpers.addSourceLine(slide, pres, theme, {
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source: 'python.langchain.com/docs/concepts/chat_models/',
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});
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ds.helpers.addPageNumber(slide, pres, theme, 5);
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}
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module.exports = { createSlide }; |