examples/aflow/scicode/optimized/round_2/graph.py

import evoagentx.workflow.operators as operator
import examples.aflow.scicode.optimized.round_2.prompt as prompt_custom
from evoagentx.models.model_configs import LLMConfig
from evoagentx.benchmark.benchmark import Benchmark
from evoagentx.models.model_utils import create_llm_instance

class Workflow:
    
    def __init__(
        self,
        name: str,
        llm_config: LLMConfig,
        benchmark: Benchmark
    ):
        self.name = name
        self.llm = create_llm_instance(llm_config)
        self.benchmark = benchmark 
        self.custom = operator.Custom(self.llm)
        self.custom_code_generate = operator.CustomCodeGenerate(self.llm)
        self.test = operator.Test(self.llm)
        self.ensemble = operator.ScEnsemble(self.llm)  # Added ensemble operator

    async def __call__(self, problem: str, entry_point: str):
        """
        Implementation of the workflow
        Custom operator to generate anything you want.
        But when you want to get standard code, you should use custom_code_generate operator.
        """
        # Generate multiple initial solutions
        solutions = []
        for _ in range(3):  # Generating three solutions
            response = await self.custom(input=problem + " Generate a solution, ensure it is functional.", instruction=prompt_custom.GENERATE_PYTHON_CODE_PROMPT)
            solutions.append(response['response'])

        # Test the solutions for errors
        test_results = []
        for solution in solutions:
            test_result = await self.test(problem=problem, solution=solution, entry_point=entry_point, benchmark=self.benchmark)
            test_results.append(test_result)

        # Select best solution using ensemble if errors detected
        successful_solutions = [result['solution'] for result in test_results if result['result']]
        if successful_solutions:
            return await self.ensemble(solutions=successful_solutions, problem=problem)  # Applying ensemble on successful solutions

        return "No valid solutions found."  # Handling case where no tests pass