decorators.py 文件源码

def __init__(self, func, *args, **kwargs):
    super(functionable, self).__init__()
    self._function = func
    self.__name__ = self._function.__name__
    try: # sometime cannot get the source
      self._source = inspect.getsource(self._function)
    except Exception as e:
      print("[WARNING] Cannot get source code of function:", func,
            "(error:%s)" % str(e))
      self._source = None
    # try to pickle the function directly
    try:
      self._sandbox = cPickle.dumps(self._function,
          protocol=cPickle.HIGHEST_PROTOCOL)
    except Exception:
      self._sandbox = _serialize_function_sandbox(func, self._source)
    # ====== store argsmap ====== #
    argspec = inspect.getargspec(func)
    argsmap = OrderedDict([(i, _ArgPlaceHolder_()) for i in argspec.args])
    # store defaults
    if argspec.defaults is not None:
      for name, arg in zip(argspec.args[::-1], argspec.defaults[::-1]):
        argsmap[name] = arg
    # update positional arguments
    for name, arg in zip(argspec.args, args):
      argsmap[name] = arg
    # update kw arguments
    argsmap.update(kwargs)
    self._argsmap = argsmap

  # ==================== Pickling methods ==================== #