Python relative imports?

[khteh]

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Example Code

I have code like the following:

from .State import CustomAgentState
from .image import show_graph

Description

Running it with langgraph dev hits an error:

  File "/usr/src/Python/rag-agent/src/rag_agent/RAGAgent.py", line 3, in <module>
    from .State import CustomAgentState
ImportError: attempted relative import with no known parent package
Could not import python module for graph:
GraphSpec(id='rag_agent', path='./src/rag_agent/RAGAgent.py', module=None, variable='make_graph', config=None)
This error likely means you haven't installed your project and its dependencies yet. Before running the server, install your project:

How to use relative import with langgraph dev?

System Info

langchain==0.3.20
langchain-community==0.3.19
langchain-core==0.3.45
langchain-google-genai==2.1.0
langchain-google-vertexai==2.0.9
langchain-openai==0.3.8
langchain-text-splitters==0.3.6

[nirmal-joji]

any fix ?