"@apply antipattern" or "Python doesn't need a with_statement!"

Remember the new funky open syntax?

with open("somefile","r") as f:
    print f.readlines()

It looks very pretty and ensures that the file gets closed after usage. Neat. However, nothing stops us from writing a decorator that does similar job without importing from __future__:

def opened(*args):
    def decorator(function):
        def ret():
            f = open(*args)
            try:
                function(f)
            finally:
                f.close()
        return ret
    return decorator

I know what it looks like. Even though, it makes us able to write simply:

@opened("file.txt", "r")
def do_it(f):
    print f.readlines()
do_it()

or even:

@apply 
@opened("file.txt", "r")
def do_it(f):
    print f.readlines()

You see now why Guido doesn't like functional programming.