how to get tools return data?

[nothk]

https://docs.deepwisdom.ai/main/en/guide/tutorials/create_and_use_tools.html

# metagpt/tools/libs/calculate_factorial.py
import math
from metagpt.tools.tool_registry import register_tool

# Register tool with the decorator
@register_tool()
def calculate_factorial(n):
    """
    Calculate the factorial of a non-negative integer.
    """
    if n < 0:
        raise ValueError("Input must be a non-negative integer")
    return math.factorial(n)

import asyncio
from metagpt.roles.di.data_interpreter import DataInterpreter
from metagpt.tools.libs import calculate_factorial

async def main(requirement: str):
   role = DataInterpreter(tools=["calculate_factorial"])    # integrate the tool
   await role.run(requirement)

if __name__ == "__main__":
   requirement = "Please calculate the factorial of 5."
   asyncio.run(main(requirement))

tools can return a result but just print in CLI (print 5! = 120 in CLI ) how to get returned data and assign it to a variable? for example,, var1 = 120 (calculated by this tool...) var1 = return data of asyncio.run(main(requirement))

thanks a lot

[shenchucheng]

Would you consider updating the requirement to "Please calculate the factorial of 5 and save the result to 'result.txt'"? This modification allows you to retrieve the calculated result from the 'result.txt' file.