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+FROM python:3.9
+
+WORKDIR /code
+
+COPY ./requirements.txt /code/requirements.txt
+RUN python3 -m pip install --no-cache-dir --upgrade pip
+RUN python3 -m pip install --no-cache-dir --upgrade -r /code/requirements.txt
+
+COPY . .
+
+CMD ["panel", "serve", "/code/app.py", "--address", "0.0.0.0", "--port", "7860",  "--allow-websocket-origin", "*"]
+
+RUN mkdir /.cache
+RUN chmod 777 /.cache
+RUN mkdir .chroma
+RUN chmod 777 .chroma

app.py

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+import hvplot.pandas
+import numpy as np
+import panel as pn
+import pandas as pd
+import openai
+from llama_index import VectorStoreIndex, download_loader
+from langchain.agents import initialize_agent, Tool
+from langchain.llms import OpenAI
+from langchain.chains.conversation.memory import ConversationBufferMemory
+from panel.chat import ChatInterface
+import time
+pn.extension("perspective")
+
+def callback(contents: str, user: str, instance: pn.chat.ChatInterface):
+    message = f"Echoing {user}: {contents}"
+    return message
+chat_interface = pn.chat.ChatInterface(callback=callback)
+msg_panel = chat_interface.send(
+    "Enter a WEB link and ask anything!-\nNote: images in the link will be ignored!!!",
+    user="assistant",
+    respond=False,
+)
+website_url_input = pn.widgets.TextInput(name='Website URL', placeholder="https://www.google.com/")
+submit = pn.widgets.Button(name='Submit', button_type='primary')
+
+
+def on_submit(event, contents, ):
+
+    try:
+        SimpleWebPageReader = download_loader("SimpleWebPageReader")
+
+        # Set OpenAI API key
+        openai.api_key = "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"  # Replace with your actual API key
+
+        # Get the entered website URL
+        website_url = website_url_input.value
+
+        if website_url:
+            # Initialize SimpleWebPageReader with the provided website URL
+            loader = SimpleWebPageReader()
+            documents = loader.load_data(urls=[website_url])
+
+            # Create VectorStoreIndex from documents
+            index = VectorStoreIndex.from_documents(documents)
+
+            # Initialize LangChain OpenAI
+            index = VectorStoreIndex.from_documents(documents)
+            llm = OpenAI(openai_api_key="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", temperature=0, streaming = True
+                         )
+
+            # Initialize ConversationBufferMemory
+            memory = ConversationBufferMemory(memory_key="chat_history")
+
+            # Initialize agent chain
+            tools = [
+                Tool(
+                    name="Website Index",
+                    func=lambda q: index.as_query_engine(),
+                    description="Useful when you want to answer questions about the text on websites.",
+                ),
+            ]
+
+
+            query_engine = index.as_query_engine()
+            response = query_engine.query(contents)
+
+            return str(response),
+
+    except Exception as e:
+        print(f"Error: {e}")
+def even_or_odd(contents, user, instance):
+    response_tuple = on_submit(event='', contents=contents)
+
+    # Extracting the first element of the tuple and converting it to a string
+    response_string = str(response_tuple)
+
+    return response_string
+# Set the callback function for the button click event
+submit.on_click(on_submit)
+
+# Instantiate the template with widgets displayed in the sidebar
+template = pn.template.BootstrapTemplate(
+    title='Chat with Web',
+    sidebar=[website_url_input, submit,
+             msg_panel],
+    header=[],
+
+)
+
+ChatInterface(callback=even_or_odd)
+def callback(contents: str, user: str, instance: pn.chat.ChatInterface):
+    message = query_engine.query(contents)
+    return message
+
+template.main.append(
+
+    ChatInterface(
+        callback=even_or_odd,
+        user="User",
+        avatar="🧑",
+        callback_user="System",
+    )
+)
+
+# Display the app
+template.servable()

requirements.txt

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+panel
+jupyter
+transformers
+numpy
+torch
+aiohttp
+aiohttp==3.9.1
+aiosignal==1.3.1
+altair==5.2.0
+annotated-types==0.6.0
+anyio==4.2.0
+async-timeout==4.0.3
+attrs==23.1.0
+beautifulsoup4==4.12.2
+bleach==6.1.0
+blinker==1.7.0
+bokeh==3.3.2
+cachetools==5.3.2
+certifi==2023.11.17
+charset-normalizer==3.3.2
+click==8.1.7
+colorama==0.4.6
+colorcet==3.0.1
+contourpy==1.2.0
+dataclasses-json==0.6.3
+Deprecated==1.2.14
+distro==1.8.0
+exceptiongroup==1.2.0
+frozenlist==1.4.1
+fsspec==2023.12.2
+gitdb==4.0.11
+GitPython==3.1.40
+greenlet==3.0.3
+h11==0.14.0
+holoviews==1.18.1
+html2text==2020.1.16
+httpcore==1.0.2
+httpx==0.26.0
+hvplot==0.9.1
+idna==3.6
+importlib-metadata==6.11.0
+Jinja2==3.1.2
+joblib==1.3.2
+jsonpatch==1.33
+jsonpointer==2.4
+jsonschema==4.20.0
+jsonschema-specifications==2023.11.2
+langchain==0.0.352
+langchain-community==0.0.6
+langchain-core==0.1.3
+langsmith==0.0.74
+linkify-it-py==2.0.2
+llama-index==0.9.21
+Markdown==3.5.1
+markdown-it-py==3.0.0
+MarkupSafe==2.1.3
+marshmallow==3.20.1
+mdit-py-plugins==0.4.0
+mdurl==0.1.2
+multidict==6.0.4
+mypy-extensions==1.0.0
+nest-asyncio==1.5.8
+nltk==3.8.1
+numpy==1.26.2
+openai==1.6.1
+packaging==23.2
+pandas==2.1.4
+panel==1.3.6
+param==2.0.1
+Pillow==10.1.0
+protobuf==4.25.1
+pyarrow==14.0.2
+pyct==0.5.0
+pydantic==2.5.3
+pydantic_core==2.14.6
+pydeck==0.8.1b0
+Pygments==2.17.2
+python-dateutil==2.8.2
+pytz==2023.3.post1
+pyviz_comms==3.0.0
+PyYAML==6.0.1
+rank-bm25==0.2.2
+referencing==0.32.0
+regex==2023.10.3
+requests==2.31.0
+rich==13.7.0
+rpds-py==0.15.2
+six==1.16.0
+smmap==5.0.1
+sniffio==1.3.0
+soupsieve==2.5
+SQLAlchemy==2.0.23
+streamlit==1.29.0
+streamlit-chat==0.1.1
+tenacity==8.2.3
+tiktoken==0.5.2
+toml==0.10.2
+toolz==0.12.0
+tornado==6.4
+tqdm==4.66.1
+typing-inspect==0.9.0
+typing_extensions==4.9.0
+tzdata==2023.3
+tzlocal==5.2
+uc-micro-py==1.0.2
+urllib3==2.1.0
+validators==0.22.0
+watchdog==3.0.0
+webencodings==0.5.1
+wrapt==1.16.0
+xyzservices==2023.10.1
+yarl==1.9.4
+zipp==3.17.0