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FailFirstSucceedSecond Class — langchain Architecture

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

Class python

Entity Profile

Dependency Diagram

graph TD
  ee1b6e3f_02d1_ad2a_b6f4_439040bbf10d["FailFirstSucceedSecond"]
  0f829642_e361_67a1_cbca_f82839bbbd31["GenericFakeChatModel"]
  ee1b6e3f_02d1_ad2a_b6f4_439040bbf10d -->|extends| 0f829642_e361_67a1_cbca_f82839bbbd31
  573473e5_eb93_a7d7_84ba_c975071c09af["test_wrap_model_call.py"]
  ee1b6e3f_02d1_ad2a_b6f4_439040bbf10d -->|defined in| 573473e5_eb93_a7d7_84ba_c975071c09af
  2827e883_90a0_f959_9ef5_8aa465042200["_generate()"]
  ee1b6e3f_02d1_ad2a_b6f4_439040bbf10d -->|method| 2827e883_90a0_f959_9ef5_8aa465042200

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py lines 1579–1592

        class FailFirstSucceedSecond(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 fails"
                    raise ValueError(msg)
                return super()._generate(messages, **kwargs)

Defined In

Extends

Source

Frequently Asked Questions

What is the FailFirstSucceedSecond class?
FailFirstSucceedSecond 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 FailFirstSucceedSecond defined?
FailFirstSucceedSecond is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py at line 1579.
What does FailFirstSucceedSecond extend?
FailFirstSucceedSecond extends GenericFakeChatModel.

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