import functools

def log(text='call'):
	def decorator(func):
		@functools.wraps(func)
		def wrapper(*args, **kw):
			print '%s %s()' % (text, func.__name__)
			return func(*args, **kw)
		return wrapper
	return decorator

@log('execute')
def now():
	print '2015-04-14'

now()