main() — langchain Function Reference

Architecture documentation for the main() function in check_version.py from the langchain codebase.

Function python LangChainCore MessageInterface calls 2 called by 1

Entity Profile

LangChainCore→ MessageInterface→ main() — langchain Function Reference

Dependency Diagram

graph TD
  06661442_038e_b46d_78bf_48e3415d8d56["main()"]
  38914e20_32e7_35e1_71af_1a3b2e7d5416["check_version.py"]
  06661442_038e_b46d_78bf_48e3415d8d56 -->|defined in| 38914e20_32e7_35e1_71af_1a3b2e7d5416
  f93eab3e_33c9_2a17_189c_f623a8825ef9["sys()"]
  f93eab3e_33c9_2a17_189c_f623a8825ef9 -->|calls| 06661442_038e_b46d_78bf_48e3415d8d56
  3bf46656_01e8_29bf_28c2_0a2b6164bcc8["get_pyproject_version()"]
  06661442_038e_b46d_78bf_48e3415d8d56 -->|calls| 3bf46656_01e8_29bf_28c2_0a2b6164bcc8
  aa3e2c9a_3150_1e34_78d5_e8bcfdc912a6["get_init_version()"]
  06661442_038e_b46d_78bf_48e3415d8d56 -->|calls| aa3e2c9a_3150_1e34_78d5_e8bcfdc912a6
  style 06661442_038e_b46d_78bf_48e3415d8d56 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/scripts/check_version.py lines 27–61

def main() -> int:
    """Validate version consistency."""
    script_dir = Path(__file__).parent
    package_dir = script_dir.parent

    pyproject_path = package_dir / "pyproject.toml"
    init_path = package_dir / "langchain" / "__init__.py"

    if not pyproject_path.exists():
        print(f"Error: {pyproject_path} not found")  # noqa: T201
        return 1

    if not init_path.exists():
        print(f"Error: {init_path} not found")  # noqa: T201
        return 1

    pyproject_version = get_pyproject_version(pyproject_path)
    init_version = get_init_version(init_path)

    if pyproject_version is None:
        print("Error: Could not find version in pyproject.toml")  # noqa: T201
        return 1

    if init_version is None:
        print("Error: Could not find __version__ in langchain/__init__.py")  # noqa: T201
        return 1

    if pyproject_version != init_version:
        print("Error: Version mismatch detected!")  # noqa: T201
        print(f"  pyproject.toml: {pyproject_version}")  # noqa: T201
        print(f"  langchain/__init__.py: {init_version}")  # noqa: T201
        return 1

    print(f"Version check passed: {pyproject_version}")  # noqa: T201
    return 0