Python
Defining and Calling Functions
A function packages a piece of work behind a name. def creates it, the call runs it, and return decides what comes back - which is None if you never s...
Functions
Defining and calling functions, every argument style including *args and **kwargs, scope and the LEGB rule, and lambda expressions.
4 notes
Notes
Python
Function Arguments: Defaults, *args and **kwargs
Positional, keyword, default, variable length and keyword only arguments - five styles, one fixed order, and one famous trap involving mutable default...
Python
Scope and the LEGB Rule
Python resolves a name by looking in four places in a fixed order: local, enclosing, global, built-in. Assignment anywhere in a function makes the nam...
Python
Lambda Functions
A lambda is a small anonymous function written as a single expression. It exists for the places where naming a function would add nothing.