# chat-pykg/app.py import datetime import os import gradio as gr import chromadb from chromadb.config import Settings # logging.basicConfig(stream=sys.stdout, level=logging.INFO) # logging.getLogger().addHandler(logging.StreamHandler(stream=sys.stdout)) from langchain.vectorstores import Chroma from langchain.docstore.document import Document import shutil import random, string from chain import get_new_chain1 from ingest import ingest_docs def randomword(length): letters = string.ascii_lowercase return ''.join(random.choice(letters) for i in range(length)) def change_tab(): return gr.Tabs.update(selected=0) def merge_collections(collection_load_names, vs_state): merged_documents = [] merged_embeddings = [] client = chromadb.Client(Settings( chroma_db_impl="duckdb+parquet", persist_directory=".persisted_data" # Optional, defaults to .chromadb/ in the current directory )) for collection_name in collection_load_names: collection_name = collection_name if collection_name == '': continue collection = client.get_collection(collection_name) collection = collection.get(include=["metadatas", "documents", "embeddings"]) for i in range(len(collection['documents'])): merged_documents.append(Document(page_content=collection['documents'][i], metadata = collection['metadatas'][i])) merged_embeddings.append(collection['embeddings'][i]) merged_collection_name = "merged_collection" merged_vectorstore = Chroma.from_documents(documents=merged_documents, embeddings=merged_embeddings, collection_name=merged_collection_name) return merged_vectorstore def set_chain_up(openai_api_key, model_selector, k_textbox, max_tokens_textbox, vectorstore, agent): if not agent or type(agent) == str: if vectorstore != None: if model_selector in ["gpt-3.5-turbo", "gpt-4"]: if openai_api_key: os.environ["OPENAI_API_KEY"] = openai_api_key qa_chain = get_new_chain1(vectorstore, model_selector, k_textbox, max_tokens_textbox) os.environ["OPENAI_API_KEY"] = "" return qa_chain else: return 'no_open_aikey' else: qa_chain = get_new_chain1(vectorstore, model_selector, k_textbox, max_tokens_textbox) return qa_chain else: return 'no_vectorstore' else: return agent def delete_collection(all_collections_state, collections_viewer): client = chromadb.Client(Settings( chroma_db_impl="duckdb+parquet", persist_directory=".persisted_data" # Optional, defaults to .chromadb/ in the current directory )) for collection in collections_viewer: client.delete_collection(collection) all_collections_state.remove(collection) collections_viewer.remove(collection) return all_collections_state, collections_viewer def delete_all_collections(all_collections_state): shutil.rmtree(".persisted_data") return [] def list_collections(all_collections_state): client = chromadb.Client(Settings( chroma_db_impl="duckdb+parquet", persist_directory=".persisted_data" # Optional, defaults to .chromadb/ in the current directory )) collection_names = [[c.name][0] for c in client.list_collections()] return collection_names def update_checkboxgroup(all_collections_state): new_options = [i for i in all_collections_state] return gr.CheckboxGroup.update(choices=new_options) def destroy_agent(agent): agent = None return agent def chat(inp, history, agent): history = history or [] if type(agent) == str: if agent == 'no_open_aikey': history.append((inp, "Please paste your OpenAI key to use")) return history, history if agent == 'no_vectorstore': history.append((inp, "Please ingest some package docs to use")) return history, history if agent == 'all_collections' and inp != []: history.append(("", f"Current vectorstores: {inp}")) return history, history if agent == 'all_vs_deleted': history.append((inp, "All vectorstores deleted")) return history, history else: print("\n==== date/time: " + str(datetime.datetime.now()) + " ====") print("inp: " + inp) history = history or [] output = agent({"question": inp, "chat_history": history}) answer = output["answer"] history.append((inp, answer)) print(history) return history, history block = gr.Blocks(css=".gradio-container {background-color: system;}") with block: gr.Markdown("

chat-pykg

") with gr.Tabs() as tabs: with gr.TabItem("Chat", id=0): with gr.Row(): openai_api_key_textbox = gr.Textbox( placeholder="Paste your OpenAI API key (sk-...)", show_label=False, lines=1, type="password", ) model_selector = gr.Dropdown(["gpt-3.5-turbo", "gpt-4", "other"], label="Model", show_label=True) model_selector.value = "gpt-3.5-turbo" k_textbox = gr.Textbox( placeholder="k: Number of search results to consider", label="Search Results k:", show_label=True, lines=1, ) k_textbox.value = "20" max_tokens_textbox = gr.Textbox( placeholder="max_tokens: Maximum number of tokens to generate", label="max_tokens", show_label=True, lines=1, ) max_tokens_textbox.value="2000" chatbot = gr.Chatbot() with gr.Row(): message = gr.Textbox( label="What's your question?", placeholder="What is this code?", lines=1, ) submit = gr.Button(value="Send", variant="secondary").style(full_width=False) gr.Examples( examples=[ "What does this code do?", "Where is this specific method in the source code and why is it broken?" ], inputs=message, ) gr.HTML( """ This simple application is an implementation of ChatGPT but over an external dataset. The source code is split/broken down into many document objects using langchain's pythoncodetextsplitter, which apparently tries to keep whole functions etc. together. This means that each file in the source code is split into many smaller documents, and the k value is the number of documents to consider when searching for the most similar documents to the question. With gpt-3.5-turbo, k=10 seems to work well, but with gpt-4, k=20 seems to work better. The model's memory is set to 5 messages, but I haven't tested with gpt-3.5-turbo yet to see if it works well. It seems to work well with gpt-4.""" ) with gr.TabItem("Collections manager", id=1): with gr.Row(): with gr.Column(scale=2): all_collections_to_get = gr.List(headers=['New Collections to make'],row_count=3, label='Collections_to_get', show_label=True, interactive=True, max_cols=1, max_rows=3) make_collections_button = gr.Button(value="Make new collection(s)", variant="secondary").style(full_width=False) with gr.Row(): chunk_size_textbox = gr.Textbox( placeholder="Chunk size", label="Chunk size", show_label=True, lines=1, ) chunk_overlap_textbox = gr.Textbox( placeholder="Chunk overlap", label="Chunk overlap", show_label=True, lines=1, ) chunk_size_textbox.value = "1000" chunk_overlap_textbox.value = "1000" with gr.Row(): gr.HTML('
See the Langchain textsplitter docs
') with gr.Column(scale=2): collections_viewer = gr.CheckboxGroup(choices=[], label='Collections_viewer', show_label=True) with gr.Column(scale=1): load_collections_button = gr.Button(value="Load collection(s) to chat!", variant="secondary").style(full_width=False) get_all_collection_names_button = gr.Button(value="List all saved collections", variant="secondary").style(full_width=False) delete_collections_button = gr.Button(value="Delete selected saved collections", variant="secondary").style(full_width=False) delete_all_collections_button = gr.Button(value="Delete all saved collections", variant="secondary").style(full_width=False) gr.HTML( "
Powered by LangChain 🦜️🔗
" ) history_state = gr.State() agent_state = gr.State() vs_state = gr.State() all_collections_state = gr.State() chat_state = gr.State() submit.click(set_chain_up, inputs=[openai_api_key_textbox, model_selector, k_textbox, max_tokens_textbox, vs_state, agent_state], outputs=[agent_state]).then(chat, inputs=[message, history_state, agent_state], outputs=[chatbot, history_state]) message.submit(chat, inputs=[message, history_state, agent_state], outputs=[chatbot, history_state]) load_collections_button.click(merge_collections, inputs=[collections_viewer, vs_state], outputs=[vs_state])#.then(change_tab, None, tabs) #.then(set_chain_up, inputs=[openai_api_key_textbox, model_selector, k_textbox, max_tokens_textbox, vs_state, agent_state], outputs=[agent_state]) make_collections_button.click(ingest_docs, inputs=[all_collections_state, all_collections_to_get, chunk_size_textbox, chunk_overlap_textbox], outputs=[all_collections_state], show_progress=True).then(update_checkboxgroup, inputs = [all_collections_state], outputs = [collections_viewer]) delete_collections_button.click(delete_collection, inputs=[all_collections_state, collections_viewer], outputs=[all_collections_state, collections_viewer]).then(update_checkboxgroup, inputs = [all_collections_state], outputs = [collections_viewer]) delete_all_collections_button.click(delete_all_collections, inputs=[all_collections_state], outputs=[all_collections_state]).then(update_checkboxgroup, inputs = [all_collections_state], outputs = [collections_viewer]) get_all_collection_names_button.click(list_collections, inputs=[all_collections_state], outputs=[all_collections_state]).then(update_checkboxgroup, inputs = [all_collections_state], outputs = [collections_viewer]) # Whenever chain parameters change, destroy the agent. input_list = [openai_api_key_textbox, model_selector, k_textbox, max_tokens_textbox] output_list = [agent_state] for input_item in input_list: input_item.change( destroy_agent, inputs=output_list, outputs=output_list, ) all_collections_state.value = list_collections(all_collections_state) block.load(update_checkboxgroup, inputs = all_collections_state, outputs = collections_viewer) block.launch(debug=True)