mnist.pkl.gz UnicodeDecodeError

代码如下（python3 pickle取代了cPickle）：

import pickle, gzip, numpy
f = gzip.open('mnist.pkl.gz','rb')
train_set, valid_set, test_seet = pickle.load(f)
f.close()

结果出错了： train_set, valid_set, test_seet = pickle.load(f)

UnicodeDecodeError: 'ascii' codec can't decode byte 0x90 in position 614: ordinal not in range(128)

看了好多编码解码的知识，终于被我试成功了，新的代码如下：

import pickle, gzip, numpy
f = gzip.open('mnist.pkl.gz','rb')
train_set, valid_set, test_seet = pickle.load(f,encoding='unicode-escape')
f.close()