ImportError: cannot import name 'msgpack'

Question

I'm following a tutorial that uses castra and dask to read in reddit comments.

I have installed the latest versions of dask and pandas using anaconda and castra using pip. My pandas version is '0.22.0', and I have installed msgpack using pip install pandas-msgpack -U I am using Python 3.6.

Trying to import castra gives me the following error:

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-16-fcdf7be49118> in <module>()
     32 from pandas import Timestamp, NaT, DataFrame
     33 from toolz import dissoc
---> 34 from castra import Castra
     35 from toolz import peek, partition_all
     36 import time

/Users/edefilippis/anaconda/lib/python3.6/site-packages/castra/__init__.py in <module>()
----> 1 from .core import Castra
      2 
      3 __version__ = '0.1.7'

/Users/edefilippis/anaconda/lib/python3.6/site-packages/castra/core.py in <module>()
     22 import pandas as pd
     23 
---> 24 from pandas import msgpack
     25 
     26 

ImportError: cannot import name 'msgpack'

Answer 1

According to https://pandas-msgpack.readthedocs.io/en/latest/install.html try:

conda install pandas-msgpack --channel conda-forge

as you might be missing some dependencies. Also see pip vs conda:

What is the difference between pip and conda?