In Python, lambda is a keyword used to define anonymous functions (i.e., functions that don't have a name), sometimes called lambda functions (after the keyword, which in turn comes …

Mar 8, 2011 · Lambda is more of a concept or programming technique then anything else. Basically it's the idea that you get a function (a first-class object in python) returned as a result …

After reading everything I can find on lambda expressions in Python, I still don't understand how to make it do what I want. Everyone uses the example: lambda x, y : x + y Why do you need to …

I don't know python (although it's definitely high on my to-learn list), so I'm wondering... is there really a good reason multiple lines aren't allowed for a lambda-expression? Why can't the body …

An easy way to perform an if in lambda is by using list comprehension. You can't raise an exception in lambda, but this is a way in Python 3.x to do something close to your example:

I think that the usual use-case for a lambda is nested within another function (contrasted with regular functions which are defined in one place and called somewhere entirely different). If …

I don't quite understand the syntax behind the sorted() argument: key=lambda variable: variable[0] Isn't lambda arbitrary? Why is variable stated twice in what looks like a dict?

I find the list comprehension much clearer than filter + lambda, but use whichever you find easier. There are two things that may slow down your use of filter. The first is the function call …

Apr 21, 2015 · 12 Underscore is a Python convention to name an unused variable (e.g. static analysis tools does not report it as unused variable). In your case lambda argument is unused, …

SyntaxError: 'await' outside async function async lambda x: ... throws SyntaxError: invalid syntax. Pep 492 states: Syntax for asynchronous lambda functions could be provided, but this …