Pascal VOC泡菜数据集不能加载泡菜

Question

我试图从斯坦福大学网站这里上加载Pascal数据集。还试图实现来自Pascal VOC Pystruct博客的语义图像分割的代码。但是当我试图加载泡菜文件时，我得到了UnicodeDecodeError。到目前为止，我尝试了下面的代码：

import numpy as np
try:
    import cPickle as pickle
except ImportError:
    import pickle

from pystruct import learners
import pystruct.models as crfs
from pystruct.utils import SaveLogger

data_train = pickle.load(open("trainingData/data_train.pickle"))
C = 0.01

我犯了个错误：

Traceback (most recent call last):
  File "/Users/mypath/PycharmProjects/semantic_segmentation_ex/ex1.py", line 11, in <module>
    data_train = pickle.load(open("trainingData/data_train.pickle"))
  File "/usr/local/Cellar/python3/3.6.2/Frameworks/Python.framework/Versions/3.6/lib/python3.6/encodings/ascii.py", line 26, in decode
    return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0x80 in position 0: ordinal not in range(128)

我找不到同样的问题和解决办法。我怎么才能让这个起作用？

Answer 1

我的一个朋友告诉我原因。序列化对象是一个Python2对象，所以如果使用python2加载，它将直接打开，不会出现任何问题。

但是，如果您希望加载Python3，则需要添加编码参数，以选择而不是打开函数。下面是示例代码：

import numpy as np

try:
    import cPickle as pickle
except ImportError:
    import pickle


with open('data_train.pickle', 'rb') as f:
    # If you use Python 3 needs a parameter as encoding='bytes'
    # Otherwise, you shouldn't add encoding parameters in Python 2
    data_train = pickle.load(f, encoding='bytes')


print("Finished loading data!")
print(data_train.keys())

特别感谢@ahmet-sezgin-duran