Primer on Python Decorators – Real Python
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Primer on Python Decorators – Real Python
Write Like A Programmer
qntm.org
This pattern (set up, do work, clean up) is common across many different problem domains, so Python has a language feature to help with it. Context managers, defined using the with keyword, manage the setup and cleanup processes. Python's file objects support them, as do most database libraries.
Execute Program
In Python, a variable is just a name, nothing more. Remember this—it is important. An assignment statement associates the name to the left of the = symbol with the object denoted by the expression to the right of the =. Remember this too. An object can have one, more than one, or no name associated with it.
John Guttag • Introduction to Computation and Programming Using Python, second edition: With Application to Understanding Data
Programmers use the term syntactic sugar to refer to special rules that let you write your code in a way that doesn’t correspond to the normal rules but that’s easier to remember how to do and looks better.