Cannot import 'BytesType' from diskcache.core

[Jaideepm08]

I was trying to run "p2ch10_explore_data.ipynb", facing import error from diskcache.core

ImportError: cannot import name 'BytesType'
Looks like diskcache has been updated and does not have 'BytesType' anymore.
Any alternatives to "utils/disk.py"?

[al00014]

It seems that using the following line could fix the current issues:
from cassandra.cqltypes import BytesType

And the BytesIO line should be changed to the following:
from diskcache import FanoutCache, Disk,core
from diskcache.core import io
from io import BytesIO
from diskcache.core import MODE_BINARY

[t-vi]

Heya, thank you for reporting this! We'll need to update the code.

[diogodanielsoaresferreira]

I had the same error and, as @al00014 suggested, adding the following should work:
from cassandra.cqltypes import BytesType
from diskcache import FanoutCache, Disk,core
from diskcache.core import io
from io import BytesIO
from diskcache.core import MODE_BINARY

Besides that, I also needed to add cassandra-driver to the requirements.

[fmarti04]

@diogodanielsoaresferreira, I am having the same issue. I installed cassandra ('pip install cassandra-driver') and then added the following to the header of the 'disk.py' file:

from cassandra.cqltypes import BytesType
from diskcache import FanoutCache, Disk,core
from diskcache.core import io
from io import BytesIO
from diskcache.core import MODE_BINARY

Now I get the error 'cannot import name 'BytesType' from 'diskcache.core'.

Thanks in advance!

[diogodanielsoaresferreira]

@fmarti04 you also have to delete/comment the following lines:

from diskcache import FanoutCache, Disk
from diskcache.core import BytesType, MODE_BINARY, BytesIO

Does it work?

[fmarti04]

@diogodanielsoaresferreira thank you so much for replying to my message so quickly. Yes, your proposed change works. I was editing the wrong "disk.py" file. The correct "disk.py" file to edit is the one found under "/util/disk.py", not the one found under "p2ch10/util/disk.py".

Thanks again Diogo!

[jeffj9930]

Thank you (all above). This helped a lot. I couldn't figure out what I was doing wrong it just kept complaining about things not being found after install and install and...

I hope the code gets updated. I just downloaded mine on Nov 17th and it is not corrected at least in Manning Pub. Maybe GitHub is more up to date.
Jeff

[AliceSum]

Updated:
I have checked the following code, and it works!

[AliceSum]

I used the following pip installs:
!pip install cassandra-driver
!pip install diskcache
!pip install SimpleITK

I have to use this code to for colab "cd dlwpt-code" because I want to use the dlwpt-code as main directory.

[AliceSum]

This pull request fixes this issue with @diogodanielsoaresferreira's solution.
#51

I am currently testing it with the p2ch10_explore_data.ipynb.
https://github.com/JonathanSum/pytorch-Deep-Learning_colab/blob/master/p2ch10_explore_data.ipynb