now() — langchain Function Reference

Architecture documentation for the now() function in utils.py from the langchain codebase.

Function python Observability CallbackManager called by 1

Entity Profile

Observability→ CallbackManager→ now() — langchain Function Reference

Dependency Diagram

graph TD
  a7fdd325_2e44_73a8_fe05_2212f3ba1948["now()"]
  8a3545bb_7e94_a2be_a861_3d58e34c213a["MockDateTime"]
  a7fdd325_2e44_73a8_fe05_2212f3ba1948 -->|defined in| 8a3545bb_7e94_a2be_a861_3d58e34c213a
  134db6ff_44dc_a037_5d16_5637e58f9750["mock_now()"]
  134db6ff_44dc_a037_5d16_5637e58f9750 -->|calls| a7fdd325_2e44_73a8_fe05_2212f3ba1948
  style a7fdd325_2e44_73a8_fe05_2212f3ba1948 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/utils/utils.py lines 95–106

        def now(cls, tz: datetime.tzinfo | None = None) -> "MockDateTime":
            # Create a copy of dt_value.
            return MockDateTime(
                dt_value.year,
                dt_value.month,
                dt_value.day,
                dt_value.hour,
                dt_value.minute,
                dt_value.second,
                dt_value.microsecond,
                dt_value.tzinfo,
            )