2

我得到一个我觉得难以理解的堆栈跟踪:

screwed_up_code.py in atleast_4d(arr)
     28 def atleast_4d(arr):
     29     stshape = arr.shape
     30     while len(stshape)<4: stshape+=(1,)
     31     print arr.shape, stshape
---> 32     return arr.reshape(stshape)

/usr/lib/python2.7/dist-packages/numpy/core/memmap.pyc in __array_finalize__(self, obj)
    255         if hasattr(obj, '_mmap'):
    256             self._mmap = obj._mmap
--> 257             self.filename = obj.filename
    258             self.offset = obj.offset
    259             self.mode = obj.mode

AttributeError: 'memmap' object has no attribute 'filename'

如果你想知道arr.shape = (192, 384, 6)stshape = (192, 384, 6, 1)


更新

正如 NPE 所建议的,我查看了类似听起来 AttributeError 的错误报告。那里的一张海报将其归咎于由于ndarrays的酸洗而丢失的属性。我确实在酸洗数组,当像这样重新激活加载的数组时:

newarr = numpy.ndarray(pickled_array)
pickled_array = newarr                  # use the recreated instead of the pickled arr

我收到警告而不是异常,并且我的代码运行:

Exception AttributeError: AttributeError("'NoneType' object has no attribute 'tell'",) in  ignored
Exception AttributeError: AttributeError("'NoneType' object has no attribute 'tell'",) in  ignored
Exception AttributeError: AttributeError("'NoneType' object has no attribute 'tell'",) in <bound method memmap.__del__ of memmap([  85389.2734375,  125935.75     ,  173624.09375  ,  272958.78125  ,
        305687.65625  ,  433026.3125   ], dtype=float32)> ignored

我很高兴我的代码可以运行,并且暂时将其保留。

4

1 回答 1

3

这听起来与这个错误非常相似。

堆栈跟踪有点不同,但代码最终在完全相同的点失败,并出现完全相同的异常:

 File "C:\Python26\Lib\site-packages\numpy\core\memmap.py", line 257, in __array_finalize__
   self.filename = obj.filename
AttributeError: 'memmap' object has no attribute 'filename'

首次报告此问题的numpy-discussion线程表明该问题可能与另一个与对象酸洗有关的票证memmap有关。无论如何,该线程值得一读。

于 2013-04-13T09:16:00.577 回答