Upload 6 files

bot_backend.py

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+import json
+import openai
+import os
+import copy
+import shutil
+from jupyter_backend import *
+from typing import *
+
+functions = [
+    {
+        "name": "execute_code",
+        "description": "This function allows you to execute Python code and retrieve the terminal output. If the code "
+                       "generates image output, the function will return the text '[image]'. The code is sent to a "
+                       "Jupyter kernel for execution. The kernel will remain active after execution, retaining all "
+                       "variables in memory.",
+        "parameters": {
+            "type": "object",
+            "properties": {
+                "code": {
+                    "type": "string",
+                    "description": "The code text"
+                }
+            },
+            "required": ["code"],
+        }
+    }
+]
+
+system_msg = '''You are an AI code interpreter.
+Your goal is to help users do a variety of jobs by executing Python code.
+
+You should:
+1. Comprehend the user's requirements carefully & to the letter.
+2. Give a brief description for what you plan to do & call the provided function to run code.
+3. Provide results analysis based on the execution output.
+4. If error occurred, try to fix it.
+
+Note: If the user uploads a file, you will receive a system message "User uploaded a file: filename". Use the filename as the path in the code. '''
+
+with open('config.json') as f:
+    config = json.load(f)
+
+if not config['API_KEY']:
+    config['API_KEY'] = os.getenv('OPENAI_API_KEY')
+    os.unsetenv('OPENAI_API_KEY')
+
+
+def get_config():
+    return config
+
+
+def config_openai_api(api_type, api_base, api_version, api_key):
+    openai.api_type = api_type
+    openai.api_base = api_base
+    openai.api_version = api_version
+    openai.api_key = api_key
+
+
+class GPTResponseLog:
+    def __init__(self):
+        self.assistant_role_name = ''
+        self.content = ''
+        self.function_name = None
+        self.function_args_str = ''
+        self.display_code_block = ''
+        self.finish_reason = 'stop'
+        self.bot_history = None
+
+    def reset_gpt_response_log_values(self, exclude=None):
+        if exclude is None:
+            exclude = []
+
+        attributes = {'assistant_role_name': '',
+                      'content': '',
+                      'function_name': None,
+                      'function_args_str': '',
+                      'display_code_block': '',
+                      'finish_reason': 'stop',
+                      'bot_history': None}
+
+        for attr_name in exclude:
+            del attributes[attr_name]
+        for attr_name, value in attributes.items():
+            setattr(self, attr_name, value)
+
+    def set_assistant_role_name(self, assistant_role_name: str):
+        self.assistant_role_name = assistant_role_name
+
+    def add_content(self, content: str):
+        self.content += content
+
+    def set_function_name(self, function_name: str):
+        self.function_name = function_name
+
+    def copy_current_bot_history(self, bot_history: List):
+        self.bot_history = copy.deepcopy(bot_history)
+
+    def add_function_args_str(self, function_args_str: str):
+        self.function_args_str += function_args_str
+
+    def update_display_code_block(self, display_code_block):
+        self.display_code_block = display_code_block
+
+    def update_finish_reason(self, finish_reason: str):
+        self.finish_reason = finish_reason
+
+
+class BotBackend(GPTResponseLog):
+    def __init__(self):
+        super().__init__()
+        self.unique_id = hash(id(self))
+        self.jupyter_work_dir = f'cache/work_dir_{self.unique_id}'
+        self.jupyter_kernel = JupyterKernel(work_dir=self.jupyter_work_dir)
+        self.gpt_model_choice = "GPT-3.5"
+        self.revocable_files = []
+        self._init_conversation()
+        self._init_api_config()
+        self._init_kwargs_for_chat_completion()
+
+    def _init_conversation(self):
+        first_system_msg = {'role': 'system', 'content': system_msg}
+        if hasattr(self, 'conversation'):
+            self.conversation.clear()
+            self.conversation.append(first_system_msg)
+        else:
+            self.conversation: List[Dict] = [first_system_msg]
+
+    def _init_api_config(self):
+        self.config = get_config()
+        api_type = self.config['API_TYPE']
+        api_base = self.config['API_base']
+        api_version = self.config['API_VERSION']
+        api_key = config['API_KEY']
+        config_openai_api(api_type, api_base, api_version, api_key)
+
+    def _init_kwargs_for_chat_completion(self):
+        self.kwargs_for_chat_completion = {
+            'stream': True,
+            'messages': self.conversation,
+            'functions': functions,
+            'function_call': 'auto'
+        }
+
+        model_name = self.config['model'][self.gpt_model_choice]['model_name']
+
+        if self.config['API_TYPE'] == 'azure':
+            self.kwargs_for_chat_completion['engine'] = model_name
+        else:
+            self.kwargs_for_chat_completion['model'] = model_name
+
+    def _clear_all_files_in_work_dir(self):
+        for filename in os.listdir(self.jupyter_work_dir):
+            os.remove(
+                os.path.join(self.jupyter_work_dir, filename)
+            )
+
+    def add_gpt_response_content_message(self):
+        self.conversation.append(
+            {'role': self.assistant_role_name, 'content': self.content}
+        )
+
+    def add_text_message(self, user_text):
+        self.conversation.append(
+            {'role': 'user', 'content': user_text}
+        )
+        self.revocable_files.clear()
+        self.update_finish_reason(finish_reason='new_input')
+
+    def add_file_message(self, path, bot_msg):
+        filename = os.path.basename(path)
+        work_dir = self.jupyter_work_dir
+
+        shutil.copy(path, work_dir)
+
+        gpt_msg = {'role': 'system', 'content': f'User uploaded a file: {filename}'}
+        self.conversation.append(gpt_msg)
+        self.revocable_files.append(
+            {
+                'bot_msg': bot_msg,
+                'gpt_msg': gpt_msg,
+                'path': os.path.join(work_dir, filename)
+            }
+        )
+
+    def add_function_call_response_message(self, function_response: str, save_tokens=True):
+        self.conversation.append(
+            {
+                "role": self.assistant_role_name,
+                "name": self.function_name,
+                "content": self.function_args_str
+            }
+        )
+
+        if save_tokens and len(function_response) > 500:
+            function_response = f'{function_response[:200]}\n[Output too much, the middle part output is omitted]\n ' \
+                                f'End part of output:\n{function_response[-200:]}'
+        self.conversation.append(
+            {
+                "role": "function",
+                "name": self.function_name,
+                "content": function_response,
+            }
+        )
+
+    def revoke_file(self):
+        if self.revocable_files:
+            file = self.revocable_files[-1]
+            bot_msg = file['bot_msg']
+            gpt_msg = file['gpt_msg']
+            path = file['path']
+
+            assert self.conversation[-1] is gpt_msg
+            del self.conversation[-1]
+
+            os.remove(path)
+
+            del self.revocable_files[-1]
+
+            return bot_msg
+        else:
+            return None
+
+    def update_gpt_model_choice(self, model_choice):
+        self.gpt_model_choice = model_choice
+        self._init_kwargs_for_chat_completion()
+
+    def restart(self):
+        self._clear_all_files_in_work_dir()
+        self.revocable_files.clear()
+        self._init_conversation()
+        self.reset_gpt_response_log_values()
+        self.jupyter_kernel.restart_jupyter_kernel()

config.json

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+{
+  "API_TYPE": "open_ai",
+  "API_base": "https://api.zeroai.link/v1",
+  "API_VERSION": null,
+  "API_KEY": "sk-g8IWhTw12439JewdEaD8CdBe7d2049548200AcBb6a74078f",
+  "model": {
+    "GPT-3.5": {
+      "model_name": "gpt-3.5-turbo-16k-0613",
+      "available": true
+    },
+    "GPT-4": {
+      "model_name": "gpt-4-0613",
+      "available": true
+    }
+  }
+}

functional.py

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+from bot_backend import *
+import base64
+import time
+
+
+def chat_completion(bot_backend: BotBackend):
+    model_choice = bot_backend.gpt_model_choice
+    config = bot_backend.config
+    kwargs_for_chat_completion = bot_backend.kwargs_for_chat_completion
+
+    assert config['model'][model_choice]['available'], f"{model_choice} is not available for your API key"
+
+    response = openai.ChatCompletion.create(**kwargs_for_chat_completion)
+    return response
+
+
+def add_function_response_to_bot_history(content_to_display, history, unique_id):
+    images, text = [], []
+
+    # terminal output
+    error_occurred = False
+    for mark, out_str in content_to_display:
+        if mark in ('stdout', 'execute_result_text', 'display_text'):
+            text.append(out_str)
+        elif mark in ('execute_result_png', 'execute_result_jpeg', 'display_png', 'display_jpeg'):
+            if 'png' in mark:
+                images.append(('png', out_str))
+            else:
+                images.append(('jpg', out_str))
+        elif mark == 'error':
+            text.append(delete_color_control_char(out_str))
+            error_occurred = True
+    text = '\n'.join(text).strip('\n')
+    if error_occurred:
+        history.append([None, f'❌Terminal output:\n```shell\n\n{text}\n```'])
+    else:
+        history.append([None, f'✔️Terminal output:\n```shell\n{text}\n```'])
+
+    # image output
+    for filetype, img in images:
+        image_bytes = base64.b64decode(img)
+        temp_path = f'cache/temp_{unique_id}'
+        if not os.path.exists(temp_path):
+            os.mkdir(temp_path)
+        path = f'{temp_path}/{hash(time.time())}.{filetype}'
+        with open(path, 'wb') as f:
+            f.write(image_bytes)
+        history.append(
+            [
+                None,
+                f'<img src=\"file={path}\" style=\'width: 600px; max-width:none; max-height:none\'>'
+            ]
+        )
+
+
+def parse_json(function_args: str, finished: bool):
+    """
+    GPT may generate non-standard JSON format string, which contains '\n' in string value, leading to error when using
+    `json.loads()`.
+    Here we implement a parser to extract code directly from non-standard JSON string.
+    :return: code string if successfully parsed otherwise None
+    """
+    parser_log = {
+        'met_begin_{': False,
+        'begin_"code"': False,
+        'end_"code"': False,
+        'met_:': False,
+        'met_end_}': False,
+        'met_end_code_"': False,
+        "code_begin_index": 0,
+        "code_end_index": 0
+    }
+    try:
+        for index, char in enumerate(function_args):
+            if char == '{':
+                parser_log['met_begin_{'] = True
+            elif parser_log['met_begin_{'] and char == '"':
+                if parser_log['met_:']:
+                    if finished:
+                        parser_log['code_begin_index'] = index + 1
+                        break
+                    else:
+                        if index + 1 == len(function_args):
+                            return ''
+                        else:
+                            temp_code_str = function_args[index + 1:]
+                            if '\n' in temp_code_str:
+                                return temp_code_str.strip('\n')
+                            else:
+                                return json.loads(function_args + '"}')['code']
+                elif parser_log['begin_"code"']:
+                    parser_log['end_"code"'] = True
+                else:
+                    parser_log['begin_"code"'] = True
+            elif parser_log['end_"code"'] and char == ':':
+                parser_log['met_:'] = True
+            else:
+                continue
+        if finished:
+            for index, char in enumerate(function_args[::-1]):
+                back_index = -1 - index
+                if char == '}':
+                    parser_log['met_end_}'] = True
+                elif parser_log['met_end_}'] and char == '"':
+                    parser_log['code_end_index'] = back_index - 1
+                    break
+                else:
+                    continue
+            code_str = function_args[parser_log['code_begin_index']: parser_log['code_end_index'] + 1]
+            if '\n' in code_str:
+                return code_str.strip('\n')
+            else:
+                return json.loads(function_args)['code']
+
+    except Exception as e:
+        return None

jupyter_backend.py

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+import jupyter_client
+import re
+
+
+def delete_color_control_char(string):
+    ansi_escape = re.compile(r'(\x9B|\x1B\[)[0-?]*[ -\/]*[@-~]')
+    return ansi_escape.sub('', string)
+
+
+class JupyterKernel:
+    def __init__(self, work_dir):
+        self.kernel_manager, self.kernel_client = jupyter_client.manager.start_new_kernel(kernel_name='python3')
+        self.work_dir = work_dir
+        self._create_work_dir()
+        self.available_functions = {
+            'execute_code': self.execute_code,
+            'python': self.execute_code
+        }
+
+    def execute_code_(self, code):
+        msg_id = self.kernel_client.execute(code)
+
+        # Get the output of the code
+        iopub_msg = self.kernel_client.get_iopub_msg()
+
+        all_output = []
+        while True:
+            if iopub_msg['msg_type'] == 'stream':
+                if iopub_msg['content'].get('name') == 'stdout':
+                    output = iopub_msg['content']['text']
+                    all_output.append(('stdout', output))
+                iopub_msg = self.kernel_client.get_iopub_msg()
+            elif iopub_msg['msg_type'] == 'execute_result':
+                if 'data' in iopub_msg['content']:
+                    if 'text/plain' in iopub_msg['content']['data']:
+                        output = iopub_msg['content']['data']['text/plain']
+                        all_output.append(('execute_result_text', output))
+                    if 'text/html' in iopub_msg['content']['data']:
+                        output = iopub_msg['content']['data']['text/html']
+                        all_output.append(('execute_result_html', output))
+                    if 'image/png' in iopub_msg['content']['data']:
+                        output = iopub_msg['content']['data']['image/png']
+                        all_output.append(('execute_result_png', output))
+                    if 'image/jpeg' in iopub_msg['content']['data']:
+                        output = iopub_msg['content']['data']['image/jpeg']
+                        all_output.append(('execute_result_jpeg', output))
+                iopub_msg = self.kernel_client.get_iopub_msg()
+            elif iopub_msg['msg_type'] == 'display_data':
+                if 'data' in iopub_msg['content']:
+                    if 'text/plain' in iopub_msg['content']['data']:
+                        output = iopub_msg['content']['data']['text/plain']
+                        all_output.append(('display_text', output))
+                    if 'text/html' in iopub_msg['content']['data']:
+                        output = iopub_msg['content']['data']['text/html']
+                        all_output.append(('display_html', output))
+                    if 'image/png' in iopub_msg['content']['data']:
+                        output = iopub_msg['content']['data']['image/png']
+                        all_output.append(('display_png', output))
+                    if 'image/jpeg' in iopub_msg['content']['data']:
+                        output = iopub_msg['content']['data']['image/jpeg']
+                        all_output.append(('display_jpeg', output))
+                iopub_msg = self.kernel_client.get_iopub_msg()
+            elif iopub_msg['msg_type'] == 'error':
+                if 'traceback' in iopub_msg['content']:
+                    output = '\n'.join(iopub_msg['content']['traceback'])
+                    all_output.append(('error', output))
+                iopub_msg = self.kernel_client.get_iopub_msg()
+            elif iopub_msg['msg_type'] == 'status' and iopub_msg['content'].get('execution_state') == 'idle':
+                break
+            else:
+                iopub_msg = self.kernel_client.get_iopub_msg()
+
+        return all_output
+
+    def execute_code(self, code):
+        text_to_gpt = []
+        content_to_display = self.execute_code_(code)
+        for mark, out_str in content_to_display:
+            if mark in ('stdout', 'execute_result_text', 'display_text'):
+                text_to_gpt.append(out_str)
+            elif mark in ('execute_result_png', 'execute_result_jpeg', 'display_png', 'display_jpeg'):
+                text_to_gpt.append('[image]')
+            elif mark == 'error':
+                text_to_gpt.append(delete_color_control_char(out_str))
+
+        return '\n'.join(text_to_gpt), content_to_display
+
+    def _create_work_dir(self):
+        # set work dir in jupyter environment
+        init_code = f"import os\n" \
+                    f"if not os.path.exists('{self.work_dir}'):\n" \
+                    f"    os.mkdir('{self.work_dir}')\n" \
+                    f"os.chdir('{self.work_dir}')\n" \
+                    f"del os"
+        self.execute_code_(init_code)
+
+    def restart_jupyter_kernel(self):
+        self.kernel_client.shutdown()
+        self.kernel_manager, self.kernel_client = jupyter_client.manager.start_new_kernel(kernel_name='python3')
+        self._create_work_dir()

response_parser.py

@@ -0,0 +1,200 @@
+from abc import ABCMeta, abstractmethod
+from functional import *
+
+
+class ChoiceStrategy(metaclass=ABCMeta):
+    def __init__(self, choice):
+        self.choice = choice
+        self.delta = choice['delta']
+
+    @abstractmethod
+    def support(self):
+        pass
+
+    @abstractmethod
+    def execute(self, bot_backend: BotBackend, history: List, whether_exit: bool):
+        pass
+
+
+class RoleChoiceStrategy(ChoiceStrategy):
+
+    def support(self):
+        return 'role' in self.delta
+
+    def execute(self, bot_backend: BotBackend, history: List, whether_exit: bool):
+        bot_backend.set_assistant_role_name(assistant_role_name=self.delta['role'])
+        return history, whether_exit
+
+
+class ContentChoiceStrategy(ChoiceStrategy):
+    def support(self):
+        return 'content' in self.delta and self.delta['content'] is not None
+        # null value of content often occur in function call:
+        #     {
+        #       "role": "assistant",
+        #       "content": null,
+        #       "function_call": {
+        #         "name": "python",
+        #         "arguments": ""
+        #       }
+        #     }
+
+    def execute(self, bot_backend: BotBackend, history: List, whether_exit: bool):
+        bot_backend.add_content(content=self.delta.get('content', ''))
+        history[-1][1] = bot_backend.content
+        return history, whether_exit
+
+
+class NameFunctionCallChoiceStrategy(ChoiceStrategy):
+    def support(self):
+        return 'function_call' in self.delta and 'name' in self.delta['function_call']
+
+    def execute(self, bot_backend: BotBackend, history: List, whether_exit: bool):
+        function_dict = bot_backend.jupyter_kernel.available_functions
+        bot_backend.set_function_name(function_name=self.delta['function_call']['name'])
+        bot_backend.copy_current_bot_history(bot_history=history)
+        if bot_backend.function_name not in function_dict:
+            history.append(
+                [
+                    None,
+                    f'GPT attempted to call a function that does '
+                    f'not exist: {bot_backend.function_name}\n '
+                ]
+            )
+            whether_exit = True
+
+        return history, whether_exit
+
+
+class ArgumentsFunctionCallChoiceStrategy(ChoiceStrategy):
+
+    def support(self):
+        return 'function_call' in self.delta and 'arguments' in self.delta['function_call']
+
+    def execute(self, bot_backend: BotBackend, history: List, whether_exit: bool):
+        bot_backend.add_function_args_str(function_args_str=self.delta['function_call']['arguments'])
+
+        if bot_backend.function_name == 'python':  # handle hallucinatory function calls
+            """
+            In practice, we have noticed that GPT, especially GPT-3.5, may occasionally produce hallucinatory
+            function calls. These calls involve a non-existent function named `python` with arguments consisting 
+            solely of raw code text (not a JSON format).
+            """
+            temp_code_str = bot_backend.function_args_str
+            bot_backend.update_display_code_block(
+                display_code_block="\n🔴Working:\n```python\n{}\n```".format(temp_code_str)
+            )
+            history = copy.deepcopy(bot_backend.bot_history)
+            history[-1][1] += bot_backend.display_code_block
+        else:
+            temp_code_str = parse_json(function_args=bot_backend.function_args_str, finished=False)
+            if temp_code_str is not None:
+                bot_backend.update_display_code_block(
+                    display_code_block="\n🔴Working:\n```python\n{}\n```".format(
+                        temp_code_str
+                    )
+                )
+                history = copy.deepcopy(bot_backend.bot_history)
+                history[-1][1] += bot_backend.display_code_block
+
+        return history, whether_exit
+
+
+class FinishReasonChoiceStrategy(ChoiceStrategy):
+    def support(self):
+        return self.choice['finish_reason'] is not None
+
+    def execute(self, bot_backend: BotBackend, history: List, whether_exit: bool):
+        function_dict = bot_backend.jupyter_kernel.available_functions
+
+        if bot_backend.content:
+            bot_backend.add_gpt_response_content_message()
+
+        bot_backend.update_finish_reason(finish_reason=self.choice['finish_reason'])
+        if bot_backend.finish_reason == 'function_call':
+            try:
+
+                code_str = self.get_code_str(bot_backend)
+
+                bot_backend.update_display_code_block(
+                    display_code_block="\n🟢Working:\n```python\n{}\n```".format(code_str)
+                )
+                history = copy.deepcopy(bot_backend.bot_history)
+                history[-1][1] += bot_backend.display_code_block
+
+                # function response
+                text_to_gpt, content_to_display = function_dict[
+                    bot_backend.function_name
+                ](code_str)
+
+                # add function call to conversion
+                bot_backend.add_function_call_response_message(function_response=text_to_gpt, save_tokens=True)
+
+                add_function_response_to_bot_history(
+                    content_to_display=content_to_display, history=history, unique_id=bot_backend.unique_id
+                )
+
+            except json.JSONDecodeError:
+                history.append(
+                    [None, f"GPT generate wrong function args: {bot_backend.function_args_str}"]
+                )
+                whether_exit = True
+                return history, whether_exit
+
+            except Exception as e:
+                history.append([None, f'Backend error: {e}'])
+                whether_exit = True
+                return history, whether_exit
+
+        bot_backend.reset_gpt_response_log_values(exclude=['finish_reason'])
+
+        return history, whether_exit
+
+    @staticmethod
+    def get_code_str(bot_backend):
+        if bot_backend.function_name == 'python':
+            code_str = bot_backend.function_args_str
+        else:
+            code_str = parse_json(function_args=bot_backend.function_args_str, finished=True)
+            if code_str is None:
+                raise json.JSONDecodeError
+        return code_str
+
+
+class ChoiceHandler:
+    strategies = [
+        RoleChoiceStrategy, ContentChoiceStrategy, NameFunctionCallChoiceStrategy,
+        ArgumentsFunctionCallChoiceStrategy, FinishReasonChoiceStrategy
+    ]
+
+    def __init__(self, choice):
+        self.choice = choice
+
+    def handle(self, bot_backend: BotBackend, history: List, whether_exit: bool):
+        for Strategy in self.strategies:
+            strategy_instance = Strategy(choice=self.choice)
+            if not strategy_instance.support():
+                continue
+            history, whether_exit = strategy_instance.execute(
+                bot_backend=bot_backend,
+                history=history,
+                whether_exit=whether_exit
+            )
+        return history, whether_exit
+
+
+def parse_response(chunk, history, bot_backend: BotBackend):
+    """
+    :return: history, whether_exit
+    """
+    whether_exit = False
+    if chunk['choices']:
+        choice = chunk['choices'][0]
+        choice_handler = ChoiceHandler(choice=choice)
+        history, whether_exit = choice_handler.handle(
+            history=history,
+            bot_backend=bot_backend,
+            whether_exit=whether_exit
+        )
+
+    return history, whether_exit

web_ui.py

@@ -0,0 +1,185 @@
+from response_parser import *
+import gradio as gr
+
+
+def initialization(state_dict: Dict) -> None:
+    if not os.path.exists('cache'):
+        os.mkdir('cache')
+    if state_dict["bot_backend"] is None:
+        state_dict["bot_backend"] = BotBackend()
+        if 'OPENAI_API_KEY' in os.environ:
+            del os.environ['OPENAI_API_KEY']
+
+
+def get_bot_backend(state_dict: Dict) -> BotBackend:
+    return state_dict["bot_backend"]
+
+
+def switch_to_gpt4(state_dict: Dict, whether_switch: bool) -> None:
+    bot_backend = get_bot_backend(state_dict)
+    if whether_switch:
+        bot_backend.update_gpt_model_choice("GPT-4")
+    else:
+        bot_backend.update_gpt_model_choice("GPT-3.5")
+
+
+def add_text(state_dict: Dict, history: List, text: str) -> Tuple[List, Dict]:
+    bot_backend = get_bot_backend(state_dict)
+    bot_backend.add_text_message(user_text=text)
+
+    history = history + [(text, None)]
+
+    return history, gr.update(value="", interactive=False)
+
+
+def add_file(state_dict: Dict, history: List, file) -> List:
+    bot_backend = get_bot_backend(state_dict)
+    path = file.name
+    filename = os.path.basename(path)
+
+    bot_msg = [f'📁[{filename}]', None]
+    history.append(bot_msg)
+
+    bot_backend.add_file_message(path=path, bot_msg=bot_msg)
+
+    return history
+
+
+def undo_upload_file(state_dict: Dict, history: List) -> Tuple[List, Dict]:
+    bot_backend = get_bot_backend(state_dict)
+    bot_msg = bot_backend.revoke_file()
+
+    if bot_msg is None:
+        return history, gr.Button.update(interactive=False)
+
+    else:
+        assert history[-1] == bot_msg
+        del history[-1]
+        if bot_backend.revocable_files:
+            return history, gr.Button.update(interactive=True)
+        else:
+            return history, gr.Button.update(interactive=False)
+
+
+def refresh_file_display(state_dict: Dict) -> List[str]:
+    bot_backend = get_bot_backend(state_dict)
+    work_dir = bot_backend.jupyter_work_dir
+    filenames = os.listdir(work_dir)
+    paths = []
+    for filename in filenames:
+        paths.append(
+            os.path.join(work_dir, filename)
+        )
+    return paths
+
+
+def restart_ui(history: List) -> Tuple[List, Dict, Dict, Dict, Dict]:
+    history.clear()
+    return (
+        history,
+        gr.Textbox.update(value="", interactive=False),
+        gr.Button.update(interactive=False),
+        gr.Button.update(interactive=False),
+        gr.Button.update(interactive=False)
+    )
+
+
+def restart_bot_backend(state_dict: Dict) -> None:
+    bot_backend = get_bot_backend(state_dict)
+    bot_backend.restart()
+
+
+def bot(state_dict: Dict, history: List) -> List:
+    bot_backend = get_bot_backend(state_dict)
+
+    while bot_backend.finish_reason in ('new_input', 'function_call'):
+        if history[-1][0] is None:
+            history.append(
+                [None, ""]
+            )
+        else:
+            history[-1][1] = ""
+
+        response = chat_completion(bot_backend=bot_backend)
+        for chunk in response:
+            history, weather_exit = parse_response(
+                chunk=chunk,
+                history=history,
+                bot_backend=bot_backend
+            )
+            yield history
+            if weather_exit:
+                exit(-1)
+
+    yield history
+
+
+if __name__ == '__main__':
+    config = get_config()
+    with gr.Blocks(theme=gr.themes.Base()) as block:
+        """
+        Reference: https://www.gradio.app/guides/creating-a-chatbot-fast
+        """
+        # UI components
+        state = gr.State(value={"bot_backend": None})
+        with gr.Tab("Chat"):
+            chatbot = gr.Chatbot([], elem_id="chatbot", label="Local Code Interpreter", height=750)
+            with gr.Row():
+                with gr.Column(scale=0.85):
+                    text_box = gr.Textbox(
+                        show_label=False,
+                        placeholder="Enter text and press enter, or upload a file",
+                        container=False
+                    )
+                with gr.Column(scale=0.15, min_width=0):
+                    file_upload_button = gr.UploadButton("📁", file_types=['file'])
+            with gr.Row(equal_height=True):
+                with gr.Column(scale=0.7):
+                    check_box = gr.Checkbox(label="Use GPT-4", interactive=config['model']['GPT-4']['available'])
+                    check_box.change(fn=switch_to_gpt4, inputs=[state, check_box])
+                with gr.Column(scale=0.15, min_width=0):
+                    restart_button = gr.Button(value='🔄 Restart')
+                with gr.Column(scale=0.15, min_width=0):
+                    undo_file_button = gr.Button(value="↩️Undo upload file", interactive=False)
+        with gr.Tab("Files"):
+            file_output = gr.Files()
+
+        # Components function binding
+        txt_msg = text_box.submit(add_text, [state, chatbot, text_box], [chatbot, text_box], queue=False).then(
+            bot, [state, chatbot], chatbot
+        )
+        txt_msg.then(fn=refresh_file_display, inputs=[state], outputs=[file_output])
+        txt_msg.then(lambda: gr.update(interactive=True), None, [text_box], queue=False)
+        txt_msg.then(lambda: gr.Button.update(interactive=False), None, [undo_file_button], queue=False)
+
+        file_msg = file_upload_button.upload(
+            add_file, [state, chatbot, file_upload_button], [chatbot], queue=False
+        ).then(
+            bot, [state, chatbot], chatbot
+        )
+        file_msg.then(lambda: gr.Button.update(interactive=True), None, [undo_file_button], queue=False)
+        file_msg.then(fn=refresh_file_display, inputs=[state], outputs=[file_output])
+
+        undo_file_button.click(
+            fn=undo_upload_file, inputs=[state, chatbot], outputs=[chatbot, undo_file_button]
+        ).then(
+            fn=refresh_file_display, inputs=[state], outputs=[file_output]
+        )
+
+        restart_button.click(
+            fn=restart_ui, inputs=[chatbot],
+            outputs=[chatbot, text_box, restart_button, file_upload_button, undo_file_button]
+        ).then(
+            fn=restart_bot_backend, inputs=[state], queue=False
+        ).then(
+            fn=refresh_file_display, inputs=[state], outputs=[file_output]
+        ).then(
+            fn=lambda: (gr.Textbox.update(interactive=True), gr.Button.update(interactive=True),
+                        gr.Button.update(interactive=True)),
+            inputs=None, outputs=[text_box, restart_button, file_upload_button], queue=False
+        )
+
+        block.load(fn=initialization, inputs=[state])
+
+    block.queue()
+    block.launch(inbrowser=True)