app.py

import os
import re
import copy
import time

import gradio as gr
from text_generation import Client
from transformers import load_tool
from share_btn import community_icon_html, loading_icon_html, share_js, share_btn_css


HF_TOKEN = os.environ.get("HF_TOKEN", None)
os.environ["HF_ALLOW_CODE_EVAL"] = "1"
print(HF_TOKEN)

FIM_PREFIX = "<fim_prefix>"
FIM_MIDDLE = "<fim_middle>"
FIM_SUFFIX = "<fim_suffix>"

FIM_INDICATOR = "<FILL_HERE>"

theme = gr.themes.Monochrome(
    primary_hue="indigo",
    secondary_hue="blue",
    neutral_hue="slate",
    radius_size=gr.themes.sizes.radius_sm,
    font=[
        gr.themes.GoogleFont("Open Sans"),
        "ui-sans-serif",
        "system-ui",
        "sans-serif",
    ],
)

tool = load_tool("vwxyzjn/pyserini-wikipedia-kilt-doc")
tool_fn = lambda x: tool(x).split("\n")[1][:600] # limit the amount if token, system_prompts

clients = {
    "StarCoderBase TriviaQA": [
        Client(
            "https://api-inference.huggingface.co/models/vwxyzjn/starcoderbase-triviaqa",
            headers={"Authorization": f"Bearer {HF_TOKEN}"},
        ),
        {"Wiki": tool_fn},
        """\
Answer the following question:
Q: In which branch of the arts is Patricia Neary famous?
A: Ballets
A2: <request><Wiki>Patricia Neary<call>Patricia Neary (born October 27, 1942) is an American ballerina, choreographer and ballet director, who has been particularly active in Switzerland. She has also been a highly successful ambassador for the Balanchine Trust, bringing George Balanchine's ballets to 60 cities around the globe.<response>
Result=Ballets<submit>
Q: Who won Super Bowl XX?
A: Chicago Bears
A2: <request><Wiki>Super Bowl XX<call>Super Bowl XX was an American football game between the National Football Conference (NFC) champion Chicago Bears and the American Football Conference (AFC) champion New England Patriots to decide the National Football League (NFL) champion for the 1985 season. The Bears defeated the Patriots by the score of 46–10, capturing their first NFL championship (and Chicago's first overall sports victory) since 1963, three years prior to the birth of the Super Bowl. Super Bowl XX was played on January 26, 1986 at the Louisiana Superdome in New Orleans.<response>
Result=Chicago Bears<submit>
""",
    ["Q: In which country is Oberhofen situated?", "Q: Irish Olympic champion Michelle smith was suspended in 1999 over drug allegations in which sport?"]
    ],
    "StarCoderBase GSM8K": [
        Client(
            "https://api-inference.huggingface.co/models/lvwerra/starcoderbase-gsm8k",
            headers={"Authorization": f"Bearer {HF_TOKEN}"},
        ),
        {"PythonInterpreter": load_tool("lvwerra/python-interpreter")},
        """\
Example of using a Python API to solve math questions. 

Q: Olivia has $23. She bought five bagels for $3 each. How much money does she have left?

<request><PythonInterpreter>
def solution():
    money_initial = 23
    bagels = 5
    bagel_cost = 3
    money_spent = bagels * bagel_cost
    money_left = money_initial - money_spent
    result = money_left
    return result
print(solution())
<call>72<response>

Result = 72 <submit>
""",
    ["Q: Tim has $400, and he received $1021. How much does he have?"]
    ],
}

def parse_tool_call(text, request_token="<request>", call_token="<call>"):
    """
    Parse request string. Expected format: <request><tool_name>query<call>
    """
    result = re.search(f"(?<={request_token}).*?(?={call_token})", text, re.DOTALL)

    # if we can't find a <request>/<call> span we return none
    if result is None:
        return None, None
    else:
        extracted_text = result.group()

    result = re.search(r"<(.*?)>", extracted_text)

    # if we can't find a tool name we return none
    if result is None:
        return None, None
    else:
        tool = result.group(1)

    # split off the tool name
    query = ">".join(extracted_text.split(">")[1:])

    return tool, query



def generate(
    prompt, system_prompt, version, temperature=0.9, max_new_tokens=256, top_p=0.95, repetition_penalty=1.0,
):
    client, tools, _, _ = clients[version]
    temperature = float(temperature)
    if temperature < 1e-2:
        temperature = 1e-2
    top_p = float(top_p)
    fim_mode = False

    # TextEnv tool
    generate_kwargs = dict(
        temperature=temperature,
        max_new_tokens=max_new_tokens,
        top_p=top_p,
        repetition_penalty=repetition_penalty,
        do_sample=True,
        seed=42,
        stop_sequences=["<call>", "<submit>"]
    )
    generation_still_running = True
    request_idx = -1
    call_idx = -1
    response_idx = -1
    submit_idx = -1
    
    i = 0
    while generation_still_running:
        try:
            stream = client.generate_stream(system_prompt + prompt, **generate_kwargs)


            # call env phase
            output = system_prompt + prompt
            generation_start_idx = len(output)
            highlighted_output = [
                (prompt, "QUERY"),
            ]
            yield highlighted_output, output[generation_start_idx:]
            for response in stream:
                i += 1
                output += response.token.text
                tool, query = parse_tool_call(output[generation_start_idx:])
                
                if tool is not None and query is not None:
                    # print("=====tool", i, tool, response, output)
                    if tool not in tools:
                        response = f"Unknown tool {tool}."
                    try:
                        response = tools[tool](query)
                        output += response + "<response>"
                        
                    except Exception as error:
                        response = f"Tool error: {str(error)}"

                if request_idx == -1:
                    request_idx = output[generation_start_idx:].find("<request>")
                if call_idx == -1:
                    call_idx = output[generation_start_idx:].find("<call>")
                    if call_idx != -1:
                        call_idx += len("<call>")
                if response_idx == -1:
                    response_idx = output[generation_start_idx:].find("<response>")
                    if response_idx != -1:
                        response_idx += len("<response>")
                if submit_idx == -1:
                    submit_idx = output[generation_start_idx:].find("<submit>")
                # I am sorry about the code
                print("-------", generation_start_idx, request_idx, call_idx, response_idx)
                highlighted_output = [
                    (prompt, "QUERY"),
                    (output[generation_start_idx:], "MODEL") if request_idx == -1 else ("", ""),
                    (output[generation_start_idx:generation_start_idx+request_idx], "MODEL"),
                    (output[generation_start_idx+request_idx:], "MODEL") if call_idx == -1 else  ("", ""),
                    (output[generation_start_idx+request_idx:generation_start_idx+call_idx], "TOOL_REQUEST"),
                    (output[generation_start_idx+call_idx:generation_start_idx+response_idx], "TOOL_CALL"),
                    (output[generation_start_idx+response_idx:], "MODEL") if submit_idx != -1 else ("", ""),
                    # (output[generation_start_idx:generation_start_idx+request_idx], ""),
                    # (output[generation_start_idx+request_idx:generation_start_idx+call_idx], "request"),
                    # (output[generation_start_idx+call_idx:], "call"),
                ]
                print(i, highlighted_output, output[generation_start_idx:])
                yield highlighted_output, output[generation_start_idx:]

            # breakpoint()
            call_output = copy.deepcopy(output)
            print("start submit output")
            # response phase
            generate_kwargs["stop_sequences"] = ["<submit>"]
            stream = client.generate_stream(output, **generate_kwargs)
            for response in stream:
                output += response.token.text
                if submit_idx == -1:
                    submit_idx = output[generation_start_idx:].find("<submit>")
                # print("-------", generation_start_idx, request_idx, call_idx, response_idx)
                highlighted_output = [
                    (prompt, "QUERY"),
                    (output[generation_start_idx:generation_start_idx+request_idx], "MODEL"),
                    (output[generation_start_idx+request_idx:generation_start_idx+call_idx], "TOOL_REQUEST"),
                    (output[generation_start_idx+call_idx:generation_start_idx+response_idx], "TOOL_CALL"),
                    (output[generation_start_idx+response_idx:], "MODEL") if submit_idx != -1 else ("", ""),
                ]
                # print(highlighted_output, output[generation_start_idx:])
                yield highlighted_output, output[generation_start_idx:]
            print("-------", generation_start_idx, request_idx, call_idx, response_idx)
            print(highlighted_output, output[generation_start_idx:])

            return highlighted_output, output[generation_start_idx:]
        except Exception as e:
            if "loading" in str(e):
                gr.Warning("waiting for model to load... (this could take up to 20 minutes, after which things are much faster)")
                time.sleep(7)
                continue
            else:
                raise gr.Error(str(e))           


examples = [
    "X_train, y_train, X_test, y_test = train_test_split(X, y, test_size=0.1)\n\n# Train a logistic regression model, predict the labels on the test set and compute the accuracy score",
    "// Returns every other value in the array as a new array.\nfunction everyOther(arr) {",
    "Poor English: She no went to the market. Corrected English:",
    "def alternating(list1, list2):\n   results = []\n   for i in range(min(len(list1), len(list2))):\n       results.append(list1[i])\n       results.append(list2[i])\n   if len(list1) > len(list2):\n       <FILL_HERE>\n   else:\n       results.extend(list2[i+1:])\n   return results",
]


def process_example(args):
    for x in generate(args):
        pass
    return x


css = ".generating {visibility: hidden}"

monospace_css = """
#q-input textarea {
    font-family: monospace, 'Consolas', Courier, monospace;
}
"""


css += share_btn_css + monospace_css + ".gradio-container {color: black}"


description = """
<div style="text-align: center;">
     <img src="https://huggingface.co/datasets/trl-internal-testing/example-images/resolve/main/images/textenv_demo_banner.png">
</div>
<div style="text-align: left;">
    <hr>
    <p>This is a demo to generate text the following StarCoderBase models fine-tuned using <a href="https://github.com/huggingface/trl/pull/424">TRL's TextEnvironment</a>:</p>
    <ul>
        <li><a href="https://huggingface.co/vwxyzjn/starcoderbase-triviaqa">StarCoderBase TriviaQA</a>: Uses a Wikipedia search index to answer trivia questions. It was trained on the TriviaQA dataset.</li>
        <li><a href="https://huggingface.co/lvwerra/starcoderbase-gsm8k">StarCoderBase GSM8K</a>: Uses a Python Interpreter to answer math questions. It was trained on the GSM8K dataset.</li>
    </ul>
</div>
"""

with gr.Blocks(theme=theme, analytics_enabled=False, css=css) as demo:
    with gr.Column():
        gr.Markdown(description)
        with gr.Row():
            version = gr.Dropdown(
                        list(clients.keys()),
                        value=list(clients.keys())[0],
                        label="Model",
                        info="Choose a model from the list",
                        )

        with gr.Row():
            with gr.Column():
                instruction = gr.Textbox(
                    value="Q: In which country is Oberhofen situated?",
                    # placeholder="Enter your question here. E.g., Q: In which country is Oberhofen situated?",
                    lines=2,
                    label="Input",
                )
                submit = gr.Button("Generate", variant="primary")
                
                output = gr.HighlightedText(
                    label="Output",
                    color_map={"QUERY": "red", "TOOL_CALL": "green", "TOOL_RESPONSE": "blue", "MODEL": "pink"},
                )
                gr.Markdown("_Note:_ The trivia model is trained to give an answer first and then refine it with a Wiki call.")
                gr_examples = gr.Examples(
                    examples=[example for client in clients.values() for example in client[3]],
                    inputs=[instruction],
                    cache_examples=False,
                )

                with gr.Row():
                    with gr.Column():
                        with gr.Accordion("Raw output", open=False):
                            output2 = gr.Code(elem_id="q-output", lines=30, label="Raw output")
                        with gr.Accordion("Advanced settings", open=False):
                            with gr.Row():
                                column_1, column_2 = gr.Column(), gr.Column()
                                with column_1:
                                    temperature = gr.Slider(
                                        label="Temperature",
                                        value=0.2,
                                        minimum=0.0,
                                        maximum=1.0,
                                        step=0.05,
                                        interactive=True,
                                        info="Higher values produce more diverse outputs",
                                    )
                                    max_new_tokens = gr.Slider(
                                        label="Max new tokens",
                                        value=256,
                                        minimum=0,
                                        maximum=8192,
                                        step=64,
                                        interactive=True,
                                        info="The maximum numbers of new tokens",
                                    )
                                with column_2:
                                    top_p = gr.Slider(
                                        label="Top-p (nucleus sampling)",
                                        value=0.90,
                                        minimum=0.0,
                                        maximum=1,
                                        step=0.05,
                                        interactive=True,
                                        info="Higher values sample more low-probability tokens",
                                    )
                                    repetition_penalty = gr.Slider(
                                        label="Repetition penalty",
                                        value=1.2,
                                        minimum=1.0,
                                        maximum=2.0,
                                        step=0.05,
                                        interactive=True,
                                        info="Penalize repeated tokens",
                                    )
                        with gr.Accordion("Prompt", open=False):
                            system_prompt = gr.Textbox(
                                value=clients[list(clients.keys())[0]][2],
                                label="System prompt",
                            )
                            version.select(
                                lambda x: (clients[x][2]),
                                inputs=[version],
                                outputs=[system_prompt],
                            )



    submit.click(
        generate,
        inputs=[instruction, system_prompt, version, temperature, max_new_tokens, top_p, repetition_penalty],
        outputs=[output, output2],
    )
demo.queue(concurrency_count=16).launch(debug=True)