LangGraph Interrupt and Resume Workflow - Part 8/22

Description

Learn how to implement interrupt and resume workflows in LangGraph using the interrupt() mechanism for human-in-the-loop interactions. This tutorial covers state persistence with checkpointers, thread-specific resumption via Command, and dynamic execution control in stateful workflows. #LangGraph #Python #AI #Workflow #StateManagement #Interrupt #Resume #Tutorial Zen Koan Explanation: The code demonstrates how an `interrupt()` call pauses execution and saves the graph's state via the `checkpointer`, while the `thread_id` in the config acts as a persistent identifier to resume the exact same execution later. The koan reflects this by suggesting that while the interrupt (the "whisper") relies on the checkpoint to remember its state, the `thread_id` (which "forgets its own name") is merely a transient pointer—without it, the checkpoint cannot locate the saved state to resume. Source: https://docs.langchain.com/oss/python/langgraph/interrupts