app.py

from smolagents import CodeAgent, DuckDuckGoSearchTool, HfApiModel, load_tool, tool
import datetime
import requests
import pytz
import yaml
import random
import math
import yfinance as yf
from forex_python.converter import CurrencyRates
from tools.final_answer import FinalAnswerTool
from Gradio_UI import GradioUI

# Example of a custom tool
def my_custom_tool(arg1: str, arg2: int) -> str:
    """A tool that does nothing yet 
    Args:
        arg1: the first argument
        arg2: the second argument
    """
    return "What magic will you build?"

@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """Fetches the current local time in a specified timezone.
    Args:
        timezone: A string representing a valid timezone (e.g., 'America/New_York').
    """
    try:
        tz = pytz.timezone(timezone)
        local_time = datetime.datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S")
        return f"The current local time in {timezone} is: {local_time}"
    except Exception as e:
        return f"Error fetching time for timezone '{timezone}': {str(e)}"

@tool
def calculator(expression: str) -> str:
    """Evaluates a mathematical expression and returns the result.
    Args:
        expression: A string representing a valid mathematical expression (e.g., '2 + 3 * 4').
    """
    try:
        result = eval(expression, {"__builtins__": None}, {"math": math})
        return f"The result of {expression} is: {result}"
    except Exception as e:
        return f"Error evaluating expression '{expression}': {str(e)}"

@tool
def python_repl(command: str) -> str:
    """Executes a Python command in a safe restricted environment.
    Args:
        command: A string representing a Python command (e.g., '2 ** 10').
    """
    try:
        result = eval(command, {"__builtins__": None}, {"math": math})
        return f"Execution result: {result}"
    except Exception as e:
        return f"Error executing command '{command}': {str(e)}"

@tool
def unit_converter(value: float, from_unit: str, to_unit: str) -> str:
    """Converts a given value from one unit to another (supports length and weight).
    Args:
        value: The numerical value to be converted.
        from_unit: The unit to convert from (e.g., 'm', 'km', 'lb', 'kg').
        to_unit: The unit to convert to.
    """
    conversions = {
        ('m', 'km'): lambda x: x / 1000,
        ('km', 'm'): lambda x: x * 1000,
        ('lb', 'kg'): lambda x: x * 0.453592,
        ('kg', 'lb'): lambda x: x / 0.453592,
    }
    try:
        result = conversions[(from_unit, to_unit)](value)
        return f"{value} {from_unit} is equal to {result} {to_unit}"
    except KeyError:
        return "Conversion not supported."

@tool
def stock_price_lookup(ticker: str) -> str:
    """Fetches the latest stock price for a given ticker symbol.
    Args:
        ticker: The stock ticker symbol (e.g., 'AAPL' for Apple Inc.).
    """
    try:
        stock = yf.Ticker(ticker)
        price = stock.history(period='1d')['Close'].iloc[-1]
        return f"The latest stock price of {ticker} is ${price:.2f}"
    except Exception as e:
        return f"Error fetching stock price for {ticker}: {str(e)}"

@tool
def currency_converter(amount: float, from_currency: str, to_currency: str) -> str:
    """Converts currency based on the latest exchange rates.
    Args:
        amount: The amount of money to be converted.
        from_currency: The currency to convert from (e.g., 'USD').
        to_currency: The currency to convert to (e.g., 'EUR').
    """
    try:
        c = CurrencyRates()
        converted_amount = c.convert(from_currency, to_currency, amount)
        return f"{amount} {from_currency} is equal to {converted_amount:.2f} {to_currency}"
    except Exception as e:
        return f"Error converting currency from {from_currency} to {to_currency}: {str(e)}"

final_answer = FinalAnswerTool()
model = HfApiModel(
    max_tokens=2096,
    temperature=0.5,
    model_id='https://wxknx1kg971u7k1n.us-east-1.aws.endpoints.huggingface.cloud',
    custom_role_conversions=None,
)

# Import tool from Hub
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)

with open("prompts.yaml", 'r') as stream:
    prompt_templates = yaml.safe_load(stream)
    
agent = CodeAgent(
    model=model,
    tools=[final_answer, calculator, python_repl, unit_converter, stock_price_lookup, currency_converter],
    max_steps=6,
    verbosity_level=1,
    grammar=None,
    planning_interval=None,
    name=None,
    description=None,
    prompt_templates=prompt_templates
)

GradioUI(agent).launch()