langchain Architecture Docs
Home / Function/ exists() — langchain Function Reference

exists() — langchain Function Reference

Architecture documentation for the exists() function in entity.py from the langchain codebase.

Function python LangChainCore MessageInterface calls 1 called by 3

Entity Profile

Dependency Diagram

graph TD
  6c8d475b_0f36_5deb_090a_14caeed7002a["exists()"]
  65c1d19b_b721_7b61_7b71_c0d54a3a49e7["UpstashRedisEntityStore"]
  6c8d475b_0f36_5deb_090a_14caeed7002a -->|defined in| 65c1d19b_b721_7b61_7b71_c0d54a3a49e7
  1b01bc7e_1b70_92e9_f34a_d4ce5aec8859["exists()"]
  1b01bc7e_1b70_92e9_f34a_d4ce5aec8859 -->|calls| 6c8d475b_0f36_5deb_090a_14caeed7002a
  50bc4ae1_8e25_46d8_33bc_109fb37f2ff8["exists()"]
  50bc4ae1_8e25_46d8_33bc_109fb37f2ff8 -->|calls| 6c8d475b_0f36_5deb_090a_14caeed7002a
  51c4ff54_3688_e0d2_d041_9ea9d10b2773["exists()"]
  51c4ff54_3688_e0d2_d041_9ea9d10b2773 -->|calls| 6c8d475b_0f36_5deb_090a_14caeed7002a
  1b01bc7e_1b70_92e9_f34a_d4ce5aec8859["exists()"]
  6c8d475b_0f36_5deb_090a_14caeed7002a -->|calls| 1b01bc7e_1b70_92e9_f34a_d4ce5aec8859
  style 6c8d475b_0f36_5deb_090a_14caeed7002a fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/memory/entity.py lines 193–194

    def exists(self, key: str) -> bool:
        return self.redis_client.exists(f"{self.full_key_prefix}:{key}") == 1

Domain

Subdomains

Defined In

Calls

Called By

Source

Frequently Asked Questions

What does exists() do?
exists() is a function in the langchain codebase, defined in libs/langchain/langchain_classic/memory/entity.py.
Where is exists() defined?
exists() is defined in libs/langchain/langchain_classic/memory/entity.py at line 193.
What does exists() call?
exists() calls 1 function(s): exists.
What calls exists()?
exists() is called by 3 function(s): exists, exists, exists.

Analyze Your Own Codebase

Get architecture documentation, dependency graphs, and domain analysis for your codebase in minutes.

Try Supermodel Free