How do I decode a msgpack file in Python?

Question

I've created a msgpack file from a Pandas Dataframe, using the following code:

df.to_msgpack('ixto.msg')

I've confirmed that the file is saved in the directory, but I can't use msgpack library for python since the following code:

unp = msgpack.unpackb('ixto.msg')

gives me the following error:

AttributeError: 'str' object has no attribute 'read'

is this a typo? you're missing a trailing quotation mark: `unp = msgpack.unpackb('ixto.msg')` — EdChum, Jan 07 '16 at 16:19
See also: [How do I read and write with msgpack?](http://stackoverflow.com/q/43442194/562769) — Martin Thoma, May 16 '17 at 10:50

score 4 · Accepted Answer · answered Jan 07 '16 at 16:59

4

msgpack.unpackb expects bytes (thus the "b") containing encoded data, and you're giving it the name of the file containing the data.

So you need to read the file first :

with open('ixto.msg', 'rb') as f:
    unp = msgpack.unpackb(f.read())

answered Jan 07 '16 at 16:59

kjaquier

1 Answers1