Error when import from fastai.vision import * in jupyter

Part 1 (2019)
1

i’m getting the following error while importing from fastai.vision import *

local variable ‘arith_flex’ referenced before assignment

2

What version are you on? Is that the only line in the notebook?

3

I have the same problem. Fresh install of fastai and jupyter using conda. The problem is related to pandas v0.25.0 and appears even if I just try to import pandas: import pandas as pd

Same problem also reported on Stackoverflow https://stackoverflow.com/questions/57226917/unboundlocalerror-local-variable-arith-flex-referenced-before-assignment

Any ideas how to work around this particular bug?

4

Okay, I have a workaround. Create new Conda environment and install fastai again.

conda create -n fastai python=3.7
conda activate fastai
conda install -c conda-forge jupyterlab
conda install -c pytorch -c fastai fastai

Now I can import fastai (and pandas too). Hope it helps.

5

It worked for me. Thanks Konstantin!

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