def curry(n):
  def decorator(fn):
      @functools.wraps(fn)
      def surrogate(*args):
          if len(args) != n:
              raise TypeError("%s() takes exactly %d arguments (%d given)" %
                              (fn.__name__, n, len(args)))
          def curried(*rest, **kws):
              return fn(*(args + rest), **kws)
          return curried
      return surrogate
  return decorator

@curry(3)
def spam(a,b,c,d,e,f):
  print a,b,c,d,e,f

spam(1,2,3)(4,5,6)