[英]Decoding msgpack_numpy with utf-8 strings
I use python 3.6 with msgpack==0.5.1
and msgpack_numpy==0.4.2
. 我使用python 3.6和msgpack==0.5.1
和msgpack_numpy==0.4.2
。
When trying to encode and decode a dict
, the string needs to be handled using utf-8
to restore the dict's keys as strings (instead of binaries). 尝试对dict
进行编码和解码时, 需要使用utf-8
处理字符串,以将dict的键恢复为字符串(而不是二进制文件)。
For example: 例如:
import msgpack
d = {'key': None}
binary = msgpack.packb(d)
ret = msgpack.unpackb(binary)
ret.keys()
>>> dict_keys([b'key'])
ret = msgpack.unpackb(binary, encoding='utf-8')
ret.keys()
>>> dict_keys(['key'])
However, when using msgpack_numpy
, passing encoding='utf-8'
brakes the numpy
decoding: 但是,当使用msgpack_numpy
,传递encoding='utf-8'
msgpack_numpy
numpy
解码:
import numpy as np
import msgpack_numpy as m
m.patch()
d['key'] = np.arange(5)
binary = msgpack.packb(d)
ret = msgpack.unpackb(binary)
ret.keys()
>>> dict_keys([b'key'])
ret[b'key']
>>> array([0, 1, 2, 3, 4])
ret = msgpack.unpackb(binary, encoding='utf-8')
ret.keys()
>>> dict_keys(['key'])
ret['key']
>>> {'data': '\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00', 'kind': '', 'nd': True, 'shape': [5], 'type': '<i8'}
Is it possible to encode/decode numpy
arrays using msgpack
without replacing the dict's keys to binary? 是否可以使用msgpack
编码/解码numpy
数组而无需将字典的键替换为二进制?
I fiddled with different packing options and discovered that using use_bin_type=True
when packing the object solves the problem. 我弄弄了不同的打包选项,发现打包对象时使用use_bin_type=True
解决了问题。
import msgpack
import numpy as np
import msgpack_numpy as m
m.patch()
d = {'key': np.arange(5)}
binary = msgpack.packb(d, use_bin_type=True)
ret = msgpack.unpackb(binary, encoding='utf-8')
ret.keys()
>>> dict_keys(['key'])
ret['key']
>>> array([0, 1, 2, 3, 4])
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