ImportError: cannot import name 'BytesType' from 'diskcache.core'

[sandip1604]

Hello Everyone

I am trying to learn along with the book by building cancer detection along with the book. However I get the following error.
Traceback (most recent call last):

File "/home/sandip/code/dsets.py", line 16, in
from util.disk import getCache

File "/home/sandip/code/util/disk.py", line 4, in
from diskcache.core import BytesType, MODE_BINARY, BytesIO

ImportError: cannot import name 'BytesType' from 'diskcache.core' (/home/sandip/anaconda3/envs/breast_cancer/lib/python3.7/site-packages/diskcache/core.py)

Please guide me to fix the issue.

Thanks in advance

[emilearthur]

@sandip1604
install diskcache version 4.1.0., Current version of diskcache does not have BytesType included.
Use pip install "diskcache==4.1.0" instead of pip install diskcache, which installs the current version