Functional Python and Modules

Functional Python — cheat sheet

Write concise, expressive data transformations using functional tools.

Lambdas & Higher-Order Functions

square = lambda x: x ** 2

Inline anonymous function.

list(map(lambda x: x*2, nums))

Transform every element lazily.

list(filter(lambda x: x>0, nums))

Keep elements matching predicate.

@my_decorator
def func(): pass

Wrap function execution with decorator.

@functools.wraps(func)

Preserve original function __name__ and __doc__.