I have been using Fastai v2, development version, in Google Colab for several months. 2 days ago, I moved to the released version of Fastai V2. I have encountered two problems:
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The following statement fails with a 'No module named 'fastai.vision.all"
from fastai.vision.all import * -
The following statement also fails:
ds_source = untar_data(URLs.PASCAL_2007)AssertionError Traceback (most recent call last)
in ()
----> 1 ds_source = untar_data(URLs.PASCAL_2007)/usr/local/lib/python3.6/dist-packages/fastai/datasets.py in untar_data(url, fname, dest, data, force_download, verbose)
233 fname = download_data(url, fname=fname, data=data)
234 if url in _checks:
–> 235 assert _check_file(fname) == _checks[url], f"Downloaded file {fname} does not match checksum expected! Remove that file from {Config().data_archive_path()} and try your code again."
236 if verbose: print(’.tgz file downloaded. Extracting the contents…’)
237 tarfile.open(fname, ‘r:gz’).extractall(dest.parent)AssertionError: Downloaded file /root/.fastai/data/pascal_2007.tgz does not match checksum expected! Remove that file from /root/.fastai/data and try your code again.
I have waited 48 hours before re-starting the notebook in the hope the folders would flush out. I also tried to fix the problem by renaming the existing folder containing pascal_2007.tgz and creating a new folder, but the problem persists in all cases.
