Pocketgrad

* **Clean, concise implementation:** The code is well-structured, readable, and effectively demonstrates automatic differentiation. * **Effective use of NumPy:** Leveraging NumPy for array operations enhances performance and readability. * **Testable design:** Unit tests showcase a focus on modularity and testability, catching potential bugs early. * **Missing error handling and documentation:** Adding comprehensive docstrings and robust error handling will improve maintainability and usability. * **Room for optimization:** Exploring more advanced autograd techniques could further improve efficiency. * **Security concerns:** The high number of critical security issues necessitates immediate attention and remediation.