“contextlib” simplifies context management with “with” statement from "summary" of Fluent Python by Luciano Ramalho
The contextlib module provides utility functions for working with context managers and the with statement. One of the most common use cases for context managers is managing resources that need to be cleaned up after they are used. By using the with statement, you can ensure that the cleanup code is always run, even if an exception is raised during the execution of the with block. contextlib makes it easy to define your own context managers by providing a decorator called contextmanager. This decorator takes a generator function as an argument and returns a new function that can be used as a context manager. The generator function should yield exactly one value, which will be bound to the target variable in the as clause of the with statement. By using co...
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