Hello, Multi-line lambda is element of many languages, but they are not needed in the form in which they are made in many languages. А good use would be to use the lambda as the last argument of the function. Syntax:

def func(lambda1): lambda1()

func(): print(1)

Can be used for create dsl. For example html:

html: head()

body(): p(): "Hello world" a(href="python.org"): "Python link"

Or for create new syntax constructions:

def unless(condition, _lambda): if not(condition): _lambda()

unless(0): print('yes')