env_var_is_set() — langchain Function Reference

Architecture documentation for the env_var_is_set() function in env.py from the langchain codebase.

Function python Observability CallbackManager

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Observability→ CallbackManager→ env_var_is_set() — langchain Function Reference

Dependency Diagram

graph TD
  431b90be_b257_0a34_7267_d8149e0238f3["env_var_is_set()"]
  359da5b8_85a8_468a_12ae_f45ea1dc33e4["env.py"]
  431b90be_b257_0a34_7267_d8149e0238f3 -->|defined in| 359da5b8_85a8_468a_12ae_f45ea1dc33e4
  style 431b90be_b257_0a34_7267_d8149e0238f3 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/utils/env.py lines 9–23

def env_var_is_set(env_var: str) -> bool:
    """Check if an environment variable is set.

    Args:
        env_var: The name of the environment variable.

    Returns:
        `True` if the environment variable is set, `False` otherwise.
    """
    return env_var in os.environ and os.environ[env_var] not in {
        "",
        "0",
        "false",
        "False",
    }