Question

我正在尝试使用Macbook中的keras代码导入mnist数据集。但是它给出了下面的错误。

# Loading the data
from keras.datasets import mnist

(x_train, y_train), (x_test, y_test) = mnist.load_data()

我得到的错误：

During handling of the above exception, another exception occurred:

Exception                                 Traceback (most recent call last)
<ipython-input-11-fdb6855f8337> in <module>()
      2 from keras.datasets import mnist
      3 
----> 4 (x_train, y_train), (x_test, y_test) = mnist.load_data()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/keras/datasets/mnist.py in load_data(path)
     21     path = get_file(path,
     22                     origin='https://s3.amazonaws.com/img-datasets/mnist.npz',
---> 23                     file_hash='8a61469f7ea1b51cbae51d4f78837e45')
     24     f = np.load(path)
     25     x_train, y_train = f['x_train'], f['y_train']

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/keras/utils/data_utils.py in get_file(fname, origin, untar, md5_hash, file_hash, cache_subdir, hash_algorithm, extract, archive_format, cache_dir)
    222                 urlretrieve(origin, fpath, dl_progress)
    223             except URLError as e:
--> 224                 raise Exception(error_msg.format(origin, e.errno, e.reason))
    225             except HTTPError as e:
    226                 raise Exception(error_msg.format(origin, e.code, e.msg))

Exception: URL fetch failure on https://s3.amazonaws.com/img-datasets/mnist.npz: None -- [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777)

提前致谢

（注意：我尝试删除.keras/datasets/中的文件，如issue中所述

Answer 1

在Mac上，转到keras文件夹。应该位于〜/ .keras /

那里将有一个名为数据集的文件夹。从here下载数据集并将其移至该文件夹。现在，运行相同的代码。

Answer 2

如果在Mac上遇到此问题，那是因为Mac上的Python3.6没有证书，并且无法从Github验证证书。

运行以下命令以安装证书：

/Applications/Python 3.6/Install Certificates.command

查看这些链接以获取有关此问题的更多信息

https://github.com/ageron/handson-ml/issues/46

urllib and "SSL: CERTIFICATE_VERIFY_FAILED" Error

Keras mnist数据集导入

2 个答案: