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')

>