chore: improvements to command line arguments (#781)

# Motivation

Makes `run_eval` command require explicit arguments

# Content

<!-- Please include a summary of the change -->

# Testing

<!-- How was the change tested? -->

# Please check the following before marking your PR as ready for review

- [ ] I have added tests for my changes
- [ ] I have updated the documentation or added new documentation as
needed

Author: jemeza-codegen

codegen-examples/examples/swebench_agent_run/run_eval.py

@@ -269,14 +269,14 @@ def process_batch_local(examples: list[SweBenchExample], model: str, num_workers
 
 
 async def run_eval(
-    use_existing_preds: str | None,
     dataset: str,
-    length: int,
+    use_existing_preds: str | None = None,
+    length: int | None = None,
     instance_id: str | None = None,
     local: bool = False,
     codebases: dict[str, Codebase] = {},
     repo: str | None = None,
-    num_workers: int = 5,
+    num_workers: int = 2,
     model: str = "claude-3-7-sonnet-latest",
 ):
     run_id = use_existing_preds or str(uuid.uuid4())
@@ -353,20 +353,20 @@ async def run_eval(
 
 
 @click.command()
-@click.option("--use-existing-preds", help="The run ID of the existing predictions to use.", type=str, default=None)
 @click.option("--dataset", help="The dataset to use.", type=click.Choice(["lite", "full", "verified", "lite_small", "lite_medium", "lite_large"]), default="lite")
-@click.option("--length", help="The number of examples to process.", type=int, default=10)
+@click.option("--use-existing-preds", help="The run ID of the existing predictions to use.", type=str, default=None)
+@click.option("--length", help="The number of examples to process.", type=int, default=None)
 @click.option("--instance-id", help="The instance ID of the example to process.", type=str, default=None)
 @click.option("--local", help="Run the evaluation locally.", is_flag=True, default=False)
 @click.option("--repo", help="The repo to use.", type=str, default=None)
 @click.option(
     "--num-workers", help="The number of workers to use. This is the number of examples that will be processed concurrently. A large number may lead to rate limiting issues.", type=int, default=5
 )
 @click.option("--model", help="The model to use.", type=str, default="claude-3-7-sonnet-latest")
-def run_eval_command(use_existing_preds, dataset, length, instance_id, local, repo, num_workers, model):
+def run_eval_command(dataset, use_existing_preds, length, instance_id, local, repo, num_workers, model):
     print(f"Repo: {repo}")
     print(f"Model: {model}")
-    asyncio.run(run_eval(use_existing_preds=use_existing_preds, dataset=dataset, length=length, instance_id=instance_id, codebases=None, local=local, repo=repo, num_workers=num_workers, model=model))
+    asyncio.run(run_eval(dataset=dataset, use_existing_preds=use_existing_preds, length=length, instance_id=instance_id, local=local, repo=repo, num_workers=num_workers, model=model))
 
 
 if __name__ == "__main__":