[Python-ideas] Return for assignment blocks

[Rhodri James]

On 24/10/2018 15:04, Calvin Spealman wrote:
> My idea is not "assignment blocks" those already exist. `def` and `class`
> blocks are both syntaxes that assign to some name. I'm just using the term
> to refer to them as a group.
> 
> The proposal is just being able to return them. These two examples become
> equivalent:
> 
> def ignore_exc(exc_type):
>      return def (func):
>          @wraps(func)
>          return def (*args, **kwargs):
>              try:
>                  return func(*args, **kwargs)
>              except exc_type:
>                  pass
> 
> def ignore_exc(exc_type):
>      def decorator(func):
>          @wraps(func)
>          def wrapped_func(*args, **kwargs):
>              try:
>                  return func(*args, **kwargs)
>              except exc_type:
>                  pass
>          return wrapped_func
>      return decorator

Essentially this is a limited multi-line lambda.  Either people are 
going to be surprised that you can only use it in a return statement or 
you have to open the whole can of worms about multi-line lambdas.  Good 
luck on the latter.

-- 
Rhodri James *-* Kynesim Ltd