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4 . Context Managers and the with Statement: Explain the purpose and functionality of context managers in Python. Create custom context managers using the _

4. Context Managers and the with Statement:
Explain the purpose and functionality of context managers in Python.
Create custom context managers using the __enter__ and __exit__ methods.
Apply context managers for resource management (e.g., file I/O, database connections), exception handling, and simplifying code structure.
Discuss the role of context managers in handling file locks and thread synchronization.
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