_hash_string() — langchain Function Reference

Architecture documentation for the _hash_string() function in api.py from the langchain codebase.

Function python CoreAbstractions Serialization calls 2 called by 1

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CoreAbstractions→ Serialization→ _hash_string() — langchain Function Reference

Dependency Diagram

graph TD
  390d38a7_c5c5_6107_c482_53f850cc3c38["_hash_string()"]
  203188c0_72d6_6932_bc21_edf25c4c00ef["api.py"]
  390d38a7_c5c5_6107_c482_53f850cc3c38 -->|defined in| 203188c0_72d6_6932_bc21_edf25c4c00ef
  5bcb48ef_fe17_bbfa_b7d3_dbe9f557ce9d["_hash_nested_dict()"]
  5bcb48ef_fe17_bbfa_b7d3_dbe9f557ce9d -->|calls| 390d38a7_c5c5_6107_c482_53f850cc3c38
  dadaa1e9_e74e_95c1_ae3a_65e79ceaffbe["_warn_about_sha1()"]
  390d38a7_c5c5_6107_c482_53f850cc3c38 -->|calls| dadaa1e9_e74e_95c1_ae3a_65e79ceaffbe
  620ce5e7_2594_a746_99a6_c56af4fd553a["_calculate_hash()"]
  390d38a7_c5c5_6107_c482_53f850cc3c38 -->|calls| 620ce5e7_2594_a746_99a6_c56af4fd553a
  style 390d38a7_c5c5_6107_c482_53f850cc3c38 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/indexing/api.py lines 73–80

def _hash_string(
    input_string: str, *, algorithm: Literal["sha1", "sha256", "sha512", "blake2b"]
) -> uuid.UUID:
    """Hash *input_string* to a deterministic UUID using the configured algorithm."""
    if algorithm == "sha1":
        _warn_about_sha1()
    hash_value = _calculate_hash(input_string, algorithm)
    return uuid.uuid5(NAMESPACE_UUID, hash_value)