Implement argument name changes

dspy/functional/functional.py

@@ -53,7 +53,7 @@ def __init__(self):
  self.__dict__[name] = attr.copy()
 
 
-def TypedChainOfThought(signature, instructions=None, rationale_type=None, *, max_retries=3) -> dspy.Module: # noqa: N802
+def TypedChainOfThought(signature, instructions=None, reasoning=None, *, max_retries=3) -> dspy.Module: # noqa: N802
  """Just like TypedPredictor, but adds a ChainOfThought OutputField."""
  signature = ensure_signature(signature, instructions)
  output_keys = ", ".join(signature.output_fields.keys())
@@ -62,12 +62,12 @@ def TypedChainOfThought(signature, instructions=None, rationale_type=None, *, ma
  prefix="Reasoning: Let's think step by step in order to",
  desc="${produce the " + output_keys + "}. We ...",
  )
- rationale_type = rationale_type or DEFAULT_RATIONALE
+ reasoning = reasoning or DEFAULT_RATIONALE
 
  return TypedPredictor(
  signature.prepend(
  "reasoning",
- rationale_type,
+ reasoning,
  ),
  max_retries=max_retries,
  )

tests/functional/test_functional.py

@@ -619,20 +619,20 @@ class ScoredSignature(dspy.Signature):
  Proposed Signature: Output""")
 
 
-def test_custom_rationale_type():
+def test_custom_reasoning_field():
  class Question(pydantic.BaseModel):
  value: str
 
  class QuestionSignature(dspy.Signature):
  topic: str = dspy.InputField()
  question: Question = dspy.OutputField()
 
- rationale_type = dspy.OutputField(
+ reasoning = dspy.OutputField(
  prefix="Custom Reasoning: Let's break this down. To generate a question about",
  desc="${topic}, we should ...",
  )
 
- program = TypedChainOfThought(QuestionSignature, rationale_type=rationale_type)
+ program = TypedChainOfThought(QuestionSignature, reasoning=reasoning)
 
  expected = "What is the speed of light?"
  lm = DummyLM(["Thoughts", f'{{"value": "{expected}"}}'])