Read_feather() function error

Intro to Machine Learning (2018)
24

Thanks. This fixed the problem.

25

Still seeing this problem, and I have the latest versions of pandas and pyarrow:

>>> import pandas
>>> pandas.__version__
'0.23.4'
>>> import pyarrow
>>> pyarrow.__version__
'0.14.0'
>>> pandas.read_feather('iris.fth')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/user/.local/lib/python3.6/site-packages/pandas/io/feather_format.py", line 112, in read_feather
    return feather.read_dataframe(path, nthreads=nthreads)
TypeError: read_feather() got an unexpected keyword argument 'nthreads'
>>> 
>>> import feather
>>> feather.__version__
'0.4.0'
>>> feather.read_dataframe('iris.fth').head()
   sepal_length  sepal_width  petal_length  petal_width species
0           5.1          3.5           1.4          0.2  setosa
1           4.9          3.0           1.4          0.2  setosa
2           4.7          3.2           1.3          0.2  setosa
3           4.6          3.1           1.5          0.2  setosa
4           5.0          3.6           1.4          0.2  setosa

Downgrading pyarrow to 0.10.0 seems to fix it, but as you can see the problem is back with later versions.

26

As suggested above following resolved the issue:

!{sys.executable} -m pip install pyarrow==0.10.0

I also got the below warning (‘nthreads’ is deprecated and to use ‘use_threads’ instead)

/home/user/anaconda3/envs/fastai/lib/python3.6/site-packages/pandas/io/feather_format.py:112: FutureWarning: `nthreads` argument is deprecated, pass `use_threads` instead
  return feather.read_dataframe(path, nthreads=nthreads)