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FailOnceThenSucceed Class — langchain Architecture

Architecture documentation for the FailOnceThenSucceed class in test_wrap_model_call.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  a0273c07_40b6_2e31_ebf2_bccf3fb9c5d7["FailOnceThenSucceed"]
  0f829642_e361_67a1_cbca_f82839bbbd31["GenericFakeChatModel"]
  a0273c07_40b6_2e31_ebf2_bccf3fb9c5d7 -->|extends| 0f829642_e361_67a1_cbca_f82839bbbd31
  573473e5_eb93_a7d7_84ba_c975071c09af["test_wrap_model_call.py"]
  a0273c07_40b6_2e31_ebf2_bccf3fb9c5d7 -->|defined in| 573473e5_eb93_a7d7_84ba_c975071c09af
  904852d6_c840_a9fd_01b2_49eff94004b3["_generate()"]
  a0273c07_40b6_2e31_ebf2_bccf3fb9c5d7 -->|method| 904852d6_c840_a9fd_01b2_49eff94004b3

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py lines 113–126

        class FailOnceThenSucceed(GenericFakeChatModel):
            @override
            def _generate(
                self,
                messages: list[BaseMessage],
                stop: list[str] | None = None,
                run_manager: CallbackManagerForLLMRun | None = None,
                **kwargs: Any,
            ) -> ChatResult:
                call_count["value"] += 1
                if call_count["value"] == 1:
                    msg = "First call fails"
                    raise ValueError(msg)
                return super()._generate(messages, **kwargs)

Defined In

Extends

Source

Frequently Asked Questions

What is the FailOnceThenSucceed class?
FailOnceThenSucceed is a class in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py.
Where is FailOnceThenSucceed defined?
FailOnceThenSucceed is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py at line 113.
What does FailOnceThenSucceed extend?
FailOnceThenSucceed extends GenericFakeChatModel.

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