132 def deepcopy(x, memo=None, _nil=[]):  function
210 def _deepcopy_list(x, memo, deepcopy=deepcopy):  argument
215         append(deepcopy(a, memo))
219 def _deepcopy_tuple(x, memo, deepcopy=deepcopy):  argument
220     y = [deepcopy(a, memo) for a in x]
236 def _deepcopy_dict(x, memo, deepcopy=deepcopy):  argument
240         y[deepcopy(key, memo)] = deepcopy(value, memo)
247     return type(x)(x.__func__, deepcopy(x.__self__, memo))
270                  deepcopy=deepcopy):  argument
273         args = (deepcopy(arg, memo) for arg in args)
280             state = deepcopy(state, memo)
297                 item = deepcopy(item, memo)
305                 key = deepcopy(key, memo)
306                 value = deepcopy(value, memo)