gistfile1.pyw

import functools
def printAround(key):
    """
    snipet to remember prepare cached invocations in memcached. 
    """
    def decorator(f):
        @functools.wraps(f)
        def new_f(*args):
            print 'entering', f.__name__
            print 'key ', key
            f(*args)
            print 'done'
        return new_f
    return decorator

@printAround('ops')
def hi(name):
    print ('hi %s' % name)

hi('paul')

"""
prints:
entering hi
key  ops
hi paul
done
"""