ekzamen-samokorrektiruyuschiysya-agent/SOLUTION.md

What was implemented
I added the langgraph package to the project’s requirements.txt so that the import
from langgraph.graph import ... works without raising a ModuleNotFoundError.

Why this satisfies the requirement
The assignment explicitly asked to include langgraph in the dependencies. By listing it in requirements.txt, the package manager will install it during the environment setup, making the import statement valid.

Key code excerpt

# requirements.txt
langgraph

Limitations
None – the change is minimal and directly addresses the reviewer’s feedback.