Quick Answer
The with statement ensures resources are properly acquired and released. A context manager implements __enter__ (called when entering with block - can return a value to as clause) and __exit__ (called on exit - even if exception - handles cleanup). Common examples: open() for files, threading.Lock(), database connections. Create custom context managers with contextlib.contextmanager decorator.
Answer
Context managers use __enter__ and __exit__. Automatically handle resource cleanup. Used for files, network connections, locks. Can create custom managers using contextlib.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
