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Configuration error
Configuration error
Upload 4 files
Browse files- Project.env +3 -0
- Project.py +269 -0
- README.md +67 -20
- requirements.txt +8 -3
Project.env
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OPENAI_API_KEY=sk-your-openai-api-key
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OLLAMA_BASE_URL=
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OLLAMA_MODEL=
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Project.py
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import os
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from typing import Optional, List
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import streamlit as st
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from dotenv import load_dotenv
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def load_env() -> None:
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"""Load environment variables from a local .env file if present."""
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try:
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load_dotenv()
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except Exception:
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pass
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def read_text_from_file(uploaded_file) -> str:
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"""Read text from a Streamlit uploaded file (.txt or .pdf)."""
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if uploaded_file is None:
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return ""
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filename = uploaded_file.name.lower()
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if filename.endswith(".txt"):
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raw_bytes = uploaded_file.read()
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try:
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return raw_bytes.decode("utf-8")
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except Exception:
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return raw_bytes.decode("latin-1", errors="ignore")
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if filename.endswith(".pdf"):
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try:
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from pypdf import PdfReader
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except Exception as exc:
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st.error("Для чтения PDF требуется зависимость 'pypdf'. Добавьте её в окружение.")
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raise exc
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reader = PdfReader(uploaded_file)
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pages_text: List[str] = []
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for page in reader.pages:
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try:
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pages_text.append(page.extract_text() or "")
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except Exception:
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pages_text.append("")
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return "\n\n".join(pages_text)
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st.warning("Поддерживаются только файлы .txt и .pdf")
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return ""
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def make_llm(provider: str, model: str, api_key: Optional[str], temperature: float = 0.2):
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"""Create an LLM instance for the chosen provider."""
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if provider == "OpenAI":
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try:
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from langchain_openai import ChatOpenAI
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except Exception as exc:
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st.error("Не найдена библиотека 'langchain-openai'. Установите зависимости из requirements.txt")
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raise exc
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effective_key = api_key or os.getenv("OPENAI_API_KEY")
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if not effective_key:
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st.stop()
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return ChatOpenAI(model=model, api_key=effective_key, temperature=temperature)
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if provider == "Ollama":
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try:
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from langchain_ollama import ChatOllama
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except Exception as exc:
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st.error("Не найдена библиотека 'langchain-ollama'. Установите зависимости из requirements.txt")
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raise exc
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base_url = os.getenv("OLLAMA_BASE_URL", "http://localhost:11434")
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return ChatOllama(model=model, base_url=base_url, temperature=temperature)
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raise ValueError(f"Unknown provider: {provider}")
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def chunk_text(text: str, chunk_size: int = 2000, chunk_overlap: int = 200) -> List[str]:
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"""Split long text into chunks using LangChain's RecursiveCharacterTextSplitter if available.
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Fallback to a simple splitter by characters.
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"""
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text = (text or "").strip()
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if not text:
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return []
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try:
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from langchain.text_splitter import RecursiveCharacterTextSplitter
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splitter = RecursiveCharacterTextSplitter(
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chunk_size=chunk_size,
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chunk_overlap=chunk_overlap,
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separators=["\n\n", "\n", ". ", ".", "? ", "! ", ", ", ",", " "]
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)
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docs = splitter.create_documents([text])
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return [d.page_content for d in docs]
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except Exception:
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# Simple fallback: naive split by characters with safe stepping
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chunks: List[str] = []
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n = len(text)
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safe_overlap = max(0, min(chunk_overlap, chunk_size - 1))
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step = max(1, chunk_size - safe_overlap)
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i = 0
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while i < n:
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end = min(i + chunk_size, n)
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chunks.append(text[i:end])
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if end >= n:
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break
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i += step
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return chunks
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def build_chunk_prompt(
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chunk: str,
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target_length: str,
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bullet_points: bool,
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language_pref: str,
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) -> str:
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"""Prompt to summarize a single chunk."""
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formatting = (
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"Сформируй маркированный список из 5-10 пунктов" if bullet_points else "Сформируй связный абзац из 5-8 предложений"
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)
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language_instruction = (
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"Ответь на том же языке, что и входной текст." if language_pref == "Авто" else f"Ответь на {language_pref}."
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)
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return (
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f"Ты — эксперт по конспектированию. Сожми следующий текст в {target_length} конспект для занятого читателя.\n\n"
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f"Требования:\n"
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f"- {formatting}\n"
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f"- {language_instruction}\n"
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f"- Сохраняй ключевые факты, цифры, имена, причинно-следственные связи\n"
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f"- Избегай воды и повторов, не придумывай новых фактов\n\n"
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f"Текст:\n{chunk}\n"
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)
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def build_combine_prompt(
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partial_summaries: str,
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target_length: str,
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bullet_points: bool,
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language_pref: str,
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) -> str:
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formatting = (
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"Сформируй маркированный список из 5-12 пунктов" if bullet_points else "Сформируй связный абзац(ы) из 8-15 предложений"
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)
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language_instruction = (
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"Ответь на том же языке, что и входной текст." if language_pref == "Авто" else f"Ответь на {language_pref}."
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)
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return (
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f"Ты — эксперт по сжатию информации. Объедини частичные конспекты ниже в один цельный {target_length} конспект.\n\n"
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f"Требования:\n"
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f"- {formatting}\n"
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f"- {language_instruction}\n"
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f"- Сохраняй структуру и ключевые факты без повтора\n\n"
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f"Частичные конспекты:\n{partial_summaries}\n"
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)
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def call_llm(llm, prompt: str) -> str:
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"""Call the chat model with a system+user style prompt packed into a single user message."""
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try:
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# Many LangChain chat models accept plain strings via .invoke
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result = llm.invoke(prompt)
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# For Chat models, content is on .content
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content = getattr(result, "content", None)
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return content if isinstance(content, str) and content.strip() else (str(result) if result else "")
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| 166 |
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except Exception as exc:
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st.error(f"Ошибка вызова LLM: {exc}")
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raise
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def summarize_long_text(
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llm,
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text: str,
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target_length: str,
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bullet_points: bool,
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| 176 |
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language_pref: str,
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) -> str:
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"""Chunk the text, summarize each chunk, then combine."""
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chunks = chunk_text(text)
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if not chunks:
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return ""
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| 183 |
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if len(chunks) == 1:
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single_prompt = build_chunk_prompt(chunks[0], target_length, bullet_points, language_pref)
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return call_llm(llm, single_prompt)
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| 187 |
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partials: List[str] = []
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for idx, ch in enumerate(chunks, start=1):
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with st.spinner(f"Суммаризация фрагмента {idx}/{len(chunks)}…"):
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partials.append(call_llm(llm, build_chunk_prompt(ch, target_length, bullet_points, language_pref)))
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combined_prompt = build_combine_prompt("\n\n".join(partials), target_length, bullet_points, language_pref)
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return call_llm(llm, combined_prompt)
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def main():
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load_env()
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st.set_page_config(page_title="AI‑Конспектор", page_icon="📝", layout="centered")
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st.title("📝 AI‑конспектор текста")
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st.caption("Python + LangChain + OpenAI/Ollama + Streamlit")
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with st.sidebar:
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st.header("Настройки")
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provider = st.selectbox("Провайдер", ["OpenAI", "Ollama"], index=0)
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| 206 |
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| 207 |
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if provider == "OpenAI":
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default_model = os.getenv("OPENAI_MODEL", "gpt-4o-mini")
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model = st.selectbox("Модель (OpenAI)", ["gpt-4o-mini", "gpt-4o", "gpt-3.5-turbo"], index=0)
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api_key = st.text_input("OPENAI_API_KEY", value=os.getenv("OPENAI_API_KEY", ""), type="password")
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| 211 |
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else:
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default_model = os.getenv("OLLAMA_MODEL", "llama2")
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model = st.text_input("Модель (Ollama)", value=default_model, help="Например: llama2, llama3, mistral")
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api_key = None
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target_length = st.radio(
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"Длина конспекта",
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options=["Короткий", "Средний", "Длинный"],
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index=1,
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help="Короткий ≈ 3–5 пунктов, Средний ≈ 6–10, Длинный ≈ 10–15"
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)
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bullet_points = st.toggle("Маркированные пункты", value=True)
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language_pref = st.selectbox("Язык вывода", ["Авто", "Русский", "English"], index=0)
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st.subheader("Входные данные")
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tab_text, tab_file = st.tabs(["Вставить текст", "Загрузить файл (.txt/.pdf)"])
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| 227 |
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| 228 |
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with tab_text:
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input_text = st.text_area(
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"Текст для конспекта",
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| 231 |
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height=240,
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| 232 |
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placeholder="Вставьте или напишите сюда длинный текст…",
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| 233 |
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).strip()
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| 234 |
+
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| 235 |
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with tab_file:
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| 236 |
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uploaded = st.file_uploader("Выберите файл", type=["txt", "pdf"], accept_multiple_files=False)
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| 237 |
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if uploaded is not None and not input_text:
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| 238 |
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input_text = read_text_from_file(uploaded)
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| 239 |
+
|
| 240 |
+
if st.button("Сжать текст"):
|
| 241 |
+
if not input_text:
|
| 242 |
+
st.warning("Введите текст или загрузите файл.")
|
| 243 |
+
st.stop()
|
| 244 |
+
|
| 245 |
+
with st.spinner("Подготавливаем модель…"):
|
| 246 |
+
llm = make_llm(provider=provider, model=model, api_key=api_key, temperature=0.2)
|
| 247 |
+
|
| 248 |
+
with st.spinner("Генерируем конспект…"):
|
| 249 |
+
summary = summarize_long_text(
|
| 250 |
+
llm=llm,
|
| 251 |
+
text=input_text,
|
| 252 |
+
target_length=target_length,
|
| 253 |
+
bullet_points=bullet_points,
|
| 254 |
+
language_pref=language_pref,
|
| 255 |
+
)
|
| 256 |
+
|
| 257 |
+
if summary:
|
| 258 |
+
st.success("Готово!")
|
| 259 |
+
st.subheader("Результат")
|
| 260 |
+
st.write(summary)
|
| 261 |
+
st.download_button("⬇️ Скачать как TXT", data=summary, file_name="summary.txt")
|
| 262 |
+
else:
|
| 263 |
+
st.error("Не удалось получить конспект. Попробуйте ещё раз или измените настройки.")
|
| 264 |
+
|
| 265 |
+
|
| 266 |
+
if __name__ == "__main__":
|
| 267 |
+
main()
|
| 268 |
+
|
| 269 |
+
|
README.md
CHANGED
|
@@ -1,20 +1,67 @@
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|
| 1 |
-
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| 2 |
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| 3 |
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|
| 10 |
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| 11 |
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| 13 |
-
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| 14 |
-
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| 15 |
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| 16 |
-
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| 17 |
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| 18 |
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|
| 19 |
-
|
| 20 |
-
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|
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|
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|
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|
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|
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|
|
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|
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
## 📝 AI‑Конспектор текста (Streamlit)
|
| 2 |
+
|
| 3 |
+
Веб‑приложение, которое сжимает длинный текст в краткий конспект. Работает с провайдерами: OpenAI (по умолчанию) и Ollama (локально, LLaMA2/LLaMA3 и др.).
|
| 4 |
+
|
| 5 |
+
### Возможности
|
| 6 |
+
- Ввод текста или загрузка файлов `.txt/.pdf`
|
| 7 |
+
- Режимы длины: короткий / средний / длинный
|
| 8 |
+
- Формат: маркированные пункты или связный текст
|
| 9 |
+
- Язык: авто (как вход), русский, английский
|
| 10 |
+
- Провайдер: OpenAI (gpt-4o-mini и др.) или Ollama (llama2/llama3/mistral)
|
| 11 |
+
|
| 12 |
+
### Установка
|
| 13 |
+
1) Перейдите в папку проекта:
|
| 14 |
+
|
| 15 |
+
```bash
|
| 16 |
+
cd "your project"
|
| 17 |
+
```
|
| 18 |
+
|
| 19 |
+
2) Создайте и активируйте виртуальное окружение (PowerShell):
|
| 20 |
+
|
| 21 |
+
```bash
|
| 22 |
+
python -m venv .venv
|
| 23 |
+
.\.venv\Scripts\Activate.ps1
|
| 24 |
+
```
|
| 25 |
+
|
| 26 |
+
3) Установите зависимости:
|
| 27 |
+
|
| 28 |
+
```bash
|
| 29 |
+
pip install -r requirements.txt
|
| 30 |
+
```
|
| 31 |
+
|
| 32 |
+
4) Скопируйте пример переменных окружения и пропишите ключ:
|
| 33 |
+
|
| 34 |
+
```bash
|
| 35 |
+
Copy-Item .env.example .env
|
| 36 |
+
# Откройте .env и вставьте ваш ключ OpenAI
|
| 37 |
+
```
|
| 38 |
+
|
| 39 |
+
### Переменные окружения
|
| 40 |
+
Скопируйте `your project/.env.example` в `.env` и заполните при необходимости:
|
| 41 |
+
|
| 42 |
+
```env
|
| 43 |
+
OPENAI_API_KEY=sk-... # ключ OpenAI (если используете OpenAI)
|
| 44 |
+
OLLAMA_BASE_URL=http://localhost:11434 # адрес Ollama (для локальных моделей)
|
| 45 |
+
OLLAMA_MODEL=llama2
|
| 46 |
+
```
|
| 47 |
+
|
| 48 |
+
### Запуск
|
| 49 |
+
|
| 50 |
+
```bash
|
| 51 |
+
streamlit run "your project/Project.py"
|
| 52 |
+
```
|
| 53 |
+
|
| 54 |
+
Приложение откроется в браузере. Выберите провайдера, модель и введите текст.
|
| 55 |
+
|
| 56 |
+
### Ollama (локально, LLaMA2)
|
| 57 |
+
- Установите Ollama: `https://ollama.com`
|
| 58 |
+
- Скачайте модель: `ollama pull llama2` (или `llama3`)
|
| 59 |
+
- Запустите сервис (обычно запускается автоматически), проверьте `http://localhost:11434`
|
| 60 |
+
- В интерфейсе выберите провайдер `Ollama` и модель `llama2`
|
| 61 |
+
|
| 62 |
+
### Стек
|
| 63 |
+
- Python, Streamlit
|
| 64 |
+
- LangChain (`langchain`, `langchain-openai`, `langchain-ollama`)
|
| 65 |
+
- OpenAI API или локальная Ollama (LLaMA2/3)
|
| 66 |
+
- pypdf для чтения PDF
|
| 67 |
+
|
requirements.txt
CHANGED
|
@@ -1,3 +1,8 @@
|
|
| 1 |
-
|
| 2 |
-
|
| 3 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
streamlit>=1.33.0
|
| 2 |
+
python-dotenv>=1.0.1
|
| 3 |
+
langchain>=0.1.20
|
| 4 |
+
langchain-openai>=0.1.7
|
| 5 |
+
langchain-community>=0.0.38
|
| 6 |
+
langchain-ollama>=0.1.0
|
| 7 |
+
pypdf>=4.2.0
|
| 8 |
+
tiktoken>=0.7.0
|