The with statement, Python Software Foundation, 2024 (Python Software Foundation) - The official language specification detailing the syntax and execution model of the 'with' statement for resource management.
contextlib - Utilities for with Statement Contexts, Python Software Foundation, 2024 - Documentation for the 'contextlib' module, providing tools like '@contextmanager' for simplified creation of context managers.
PEP 343 -- The "with" Statement, Guido van Rossum, Alyssa Coghlan, 2005 - The foundational Python Enhancement Proposal (PEP) that introduced the 'with' statement and the context manager protocol to the language.