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app.py

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+import gradio as gr
+from langchain_core.prompts import ChatPromptTemplate
+from langchain_openai import ChatOpenAI
+from langgraph.graph import StateGraph, END
+from typing import Dict, List
+
+# Assume you have your LangGraph setup here
+def agent_node(state):
+    prompt = ChatPromptTemplate.from_messages(
+        [("user", "{user_input}")]
+    )
+    model = ChatOpenAI()
+    response = model.invoke(prompt.format_messages(**state))
+    return {"response": response.content}
+
+def create_workflow():
+    workflow = StateGraph(Dict)
+    workflow.add_node("agent", agent_node)
+    workflow.set_entry_point("agent")
+    workflow.add_edge("agent", END)
+    return workflow.compile()
+
+workflow = create_workflow()
+
+def respond(message, history):
+    result = workflow.invoke({"user_input": message})
+    return result["response"]
+
+iface = gr.ChatInterface(respond)
+iface.launch()
+
+gr.close_all()

requirements.txt

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+aiofiles==23.2.1
+annotated-types==0.7.0
+anyio==4.9.0
+certifi==2025.1.31
+charset-normalizer==3.4.1
+click==8.1.8
+distro==1.9.0
+fastapi==0.115.12
+ffmpy==0.5.0
+filelock==3.18.0
+fsspec==2025.3.2
+gradio==5.23.2
+gradio_client==1.8.0
+greenlet==3.1.1
+groovy==0.1.2
+h11==0.14.0
+httpcore==1.0.7
+httpx==0.28.1
+huggingface-hub==0.30.1
+idna==3.10
+Jinja2==3.1.6
+jiter==0.9.0
+jsonpatch==1.33
+jsonpointer==3.0.0
+langchain==0.3.22
+langchain-core==0.3.49
+langchain-openai==0.3.11
+langchain-text-splitters==0.3.7
+langgraph==0.3.21
+langgraph-checkpoint==2.0.23
+langgraph-prebuilt==0.1.7
+langgraph-sdk==0.1.60
+langsmith==0.3.21
+markdown-it-py==3.0.0
+MarkupSafe==3.0.2
+mdurl==0.1.2
+numpy==2.2.4
+openai==1.70.0
+orjson==3.10.16
+ormsgpack==1.9.1
+packaging==24.2
+pandas==2.2.3
+pillow==11.1.0
+pydantic==2.11.1
+pydantic_core==2.33.0
+pydub==0.25.1
+Pygments==2.19.1
+python-dateutil==2.9.0.post0
+python-multipart==0.0.20
+pytz==2025.2
+PyYAML==6.0.2
+regex==2024.11.6
+requests==2.32.3
+requests-toolbelt==1.0.0
+rich==14.0.0
+ruff==0.11.2
+safehttpx==0.1.6
+semantic-version==2.10.0
+shellingham==1.5.4
+six==1.17.0
+sniffio==1.3.1
+SQLAlchemy==2.0.40
+starlette==0.46.1
+tenacity==9.0.0
+tiktoken==0.9.0
+tomlkit==0.13.2
+tqdm==4.67.1
+typer==0.15.2
+typing-inspection==0.4.0
+typing_extensions==4.13.0
+tzdata==2025.2
+urllib3==2.3.0
+uvicorn==0.34.0
+websockets==15.0.1
+xxhash==3.5.0
+zstandard==0.23.0