Many Pythonistas are familiar with using decorators, but far fewer understand what’s happening under the hood and can write their own. It takes a little effort to learn their subtleties but, … ...

(And yes, Python's definition of "everything" isn't as wide as Smalltalk's.) When you define a function, you're creating a new ... a one-element list) of argument types. The second element in the list ...

In pytest, you define fixtures using a combination of the pytest.fixture decorator, along with a function definition. For example, say you have a file that returns a list of lines from a file, in ...

Find out by using Python’s built-in profiler to locate ... return x def add_2(x,y): if y % 20000 ... In Python, the mere act of making a function call incurs a relatively large ...