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import os |
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import time |
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import uuid |
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from typing import List, Tuple, Optional, Dict, Union |
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import google.generativeai as genai |
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import gradio as gr |
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from PIL import Image |
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print("google-generativeai:", genai.__version__) |
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TITLE = """<h1 align="center">Workflow 💬</h1>""" |
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GOOGLE_API_KEY = os.environ.get("GOOGLE_API_KEY") |
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AVATAR_IMAGES = ( |
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None, |
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"https://media.roboflow.com/spaces/gemini-icon.png" |
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) |
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IMAGE_CACHE_DIRECTORY = "/tmp" |
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IMAGE_WIDTH = 512 |
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CHAT_HISTORY = List[Tuple[Optional[Union[Tuple[str], str]], Optional[str]]] |
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def preprocess_stop_sequences(stop_sequences: str) -> Optional[List[str]]: |
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if not stop_sequences: |
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return None |
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return [sequence.strip() for sequence in stop_sequences.split(",")] |
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def preprocess_image(image: Image.Image) -> Optional[Image.Image]: |
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image_height = int(image.height * IMAGE_WIDTH / image.width) |
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return image.resize((IMAGE_WIDTH, image_height)) |
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def cache_pil_image(image: Image.Image) -> str: |
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image_filename = f"{uuid.uuid4()}.jpeg" |
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os.makedirs(IMAGE_CACHE_DIRECTORY, exist_ok=True) |
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image_path = os.path.join(IMAGE_CACHE_DIRECTORY, image_filename) |
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image.save(image_path, "JPEG") |
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return image_path |
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def preprocess_chat_history( |
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history: CHAT_HISTORY |
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) -> List[Dict[str, Union[str, List[str]]]]: |
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messages = [] |
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for user_message, model_message in history: |
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if isinstance(user_message, tuple): |
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pass |
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elif user_message is not None: |
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messages.append({'role': 'user', 'parts': [user_message]}) |
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if model_message is not None: |
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messages.append({'role': 'model', 'parts': [model_message]}) |
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return messages |
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def upload(files: Optional[List[str]], chatbot: CHAT_HISTORY) -> CHAT_HISTORY: |
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for file in files: |
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image = Image.open(file).convert('RGB') |
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image = preprocess_image(image) |
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image_path = cache_pil_image(image) |
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chatbot.append(((image_path,), None)) |
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return chatbot |
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def user(text_prompt: str, chatbot: CHAT_HISTORY): |
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if text_prompt: |
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chatbot.append((text_prompt, None)) |
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return "", chatbot |
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def bot( |
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google_key: str, |
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files: Optional[List[str]], |
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temperature: float, |
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max_output_tokens: int, |
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stop_sequences: str, |
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top_k: int, |
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top_p: float, |
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chatbot: CHAT_HISTORY |
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): |
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if len(chatbot) == 0: |
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return chatbot |
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google_key = google_key if google_key else GOOGLE_API_KEY |
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if not google_key: |
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raise ValueError( |
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"GOOGLE_API_KEY is not set. " |
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"Please follow the instructions in the README to set it up.") |
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genai.configure(api_key=google_key) |
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generation_config = genai.types.GenerationConfig( |
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temperature=temperature, |
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max_output_tokens=max_output_tokens, |
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stop_sequences=preprocess_stop_sequences(stop_sequences=stop_sequences), |
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top_k=top_k, |
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top_p=top_p) |
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if files: |
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text_prompt = [chatbot[-1][0]] \ |
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if chatbot[-1][0] and isinstance(chatbot[-1][0], str) \ |
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else [] |
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image_prompt = [Image.open(file).convert('RGB') for file in files] |
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model = genai.GenerativeModel('gemini-pro-vision') |
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response = model.generate_content( |
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text_prompt + image_prompt, |
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stream=True, |
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generation_config=generation_config) |
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else: |
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messages = preprocess_chat_history(chatbot) |
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model = genai.GenerativeModel('gemini-pro') |
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response = model.generate_content( |
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messages, |
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stream=True, |
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generation_config=generation_config) |
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chatbot[-1][1] = "" |
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for chunk in response: |
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for i in range(0, len(chunk.text), 10): |
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section = chunk.text[i:i + 10] |
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chatbot[-1][1] += section |
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time.sleep(0.01) |
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yield chatbot |
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google_key_component = gr.Textbox( |
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label="GOOGLE API KEY", |
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value="", |
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type="password", |
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placeholder="...", |
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info="You have to provide your own GOOGLE_API_KEY for this app to function properly", |
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visible=GOOGLE_API_KEY is None |
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) |
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chatbot_component = gr.Chatbot( |
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label='Workflow Bot', |
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bubble_full_width=False, |
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avatar_images=AVATAR_IMAGES, |
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scale=2, |
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height=400 |
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) |
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text_prompt_component = gr.Textbox( |
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placeholder="Hi there! [press Enter]", show_label=False, autofocus=True, scale=8 |
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) |
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upload_button_component = gr.UploadButton( |
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label="Upload Images", file_count="multiple", file_types=["image"], scale=1 |
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) |
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run_button_component = gr.Button(value="Run", variant="primary", scale=1) |
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temperature_component = gr.Slider( |
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minimum=0, |
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maximum=1.0, |
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value=0.4, |
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step=0.05, |
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label="Temperature", |
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info=( |
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"Temperature controls the degree of randomness in token selection. Lower " |
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"temperatures are good for prompts that expect a true or correct response, " |
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"while higher temperatures can lead to more diverse or unexpected results. " |
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)) |
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max_output_tokens_component = gr.Slider( |
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minimum=1, |
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maximum=2048, |
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value=1024, |
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step=1, |
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label="Token limit", |
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info=( |
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"Token limit determines the maximum amount of text output from one prompt. A " |
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"token is approximately four characters. The default value is 2048." |
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)) |
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stop_sequences_component = gr.Textbox( |
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label="Add stop sequence", |
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value="", |
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type="text", |
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placeholder="STOP, END", |
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info=( |
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"A stop sequence is a series of characters (including spaces) that stops " |
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"response generation if the model encounters it. The sequence is not included " |
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"as part of the response. You can add up to five stop sequences." |
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)) |
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top_k_component = gr.Slider( |
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minimum=1, |
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maximum=40, |
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value=32, |
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step=1, |
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label="Top-K", |
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info=( |
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"Top-k changes how the model selects tokens for output. A top-k of 1 means the " |
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"selected token is the most probable among all tokens in the model’s " |
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"vocabulary (also called greedy decoding), while a top-k of 3 means that the " |
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"next token is selected from among the 3 most probable tokens (using " |
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"temperature)." |
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)) |
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top_p_component = gr.Slider( |
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minimum=0, |
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maximum=1, |
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value=1, |
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step=0.01, |
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label="Top-P", |
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info=( |
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"Top-p changes how the model selects tokens for output. Tokens are selected " |
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"from most probable to least until the sum of their probabilities equals the " |
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"top-p value. For example, if tokens A, B, and C have a probability of .3, .2, " |
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"and .1 and the top-p value is .5, then the model will select either A or B as " |
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"the next token (using temperature). " |
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)) |
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user_inputs = [ |
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text_prompt_component, |
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chatbot_component |
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] |
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bot_inputs = [ |
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google_key_component, |
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upload_button_component, |
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temperature_component, |
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max_output_tokens_component, |
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stop_sequences_component, |
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top_k_component, |
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top_p_component, |
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chatbot_component |
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] |
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with gr.Blocks() as demo: |
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gr.HTML(TITLE) |
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with gr.Column(): |
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google_key_component.render() |
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chatbot_component.render() |
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with gr.Row(): |
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text_prompt_component.render() |
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upload_button_component.render() |
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run_button_component.render() |
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with gr.Accordion("Parameters", open=False): |
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temperature_component.render() |
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max_output_tokens_component.render() |
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stop_sequences_component.render() |
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with gr.Accordion("Advanced", open=False): |
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top_k_component.render() |
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top_p_component.render() |
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run_button_component.click( |
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fn=user, |
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inputs=user_inputs, |
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outputs=[text_prompt_component, chatbot_component], |
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queue=False |
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).then( |
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fn=bot, inputs=bot_inputs, outputs=[chatbot_component], |
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) |
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text_prompt_component.submit( |
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fn=user, |
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inputs=user_inputs, |
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outputs=[text_prompt_component, chatbot_component], |
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queue=False |
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).then( |
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fn=bot, inputs=bot_inputs, outputs=[chatbot_component], |
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) |
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upload_button_component.upload( |
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fn=upload, |
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inputs=[upload_button_component, chatbot_component], |
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outputs=[chatbot_component], |
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queue=False |
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) |
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demo.queue(max_size=99).launch(debug=False, show_error=True) |
