AttributeError: type object 'File' has no attribute 'read'

[nirutgupta]

isort failing for the version 5.6.4

ERROR: Unrecoverable exception thrown when parsing qaas_liftie/cli/core.py! This should NEVER happen.
If encountered, please open an issue: https://github.com/PyCQA/isort/issues/new
Traceback (most recent call last):
File "/Users/nirut.gupta/workspace/bin/isort", line 8, in
sys.exit(main())
File "/Users/nirut.gupta/workspace/lib/python3.6/site-packages/isort/main.py", line 953, in main
for sort_attempt in attempt_iterator:
File "/Users/nirut.gupta/workspace/lib/python3.6/site-packages/isort/main.py", line 947, in
for file_name in file_names
File "/Users/nirut.gupta/workspace/lib/python3.6/site-packages/isort/main.py", line 100, in sort_imports
**kwargs,
File "/Users/nirut.gupta/workspace/lib/python3.6/site-packages/isort/api.py", line 303, in sort_file
with io.File.read(filename) as source_file:
AttributeError: type object 'File' has no attribute 'read'

Steps to reproduce:
I think any file or directory will work
isort myfile/or/directory

[nirutgupta]

Ok i think its not the isort version but its the python version that is causing problem. Tried 5.5.0 version as well against python 3.6.0 still the same result.

[timothycrosley]

This is a duplicate of: #1593 which is fixed in isort development branch and awaiting release by end of month. More details are on the linked ticket, but the TLDR is that it's caused by a bug in Python 3.6.0 - which has been fixed in Python itself within the 3.6 series so isn't caught by isort's CI/CD which can't reasonably test against all minor releases of Python