Ran into ERROR: Unrecoverable exception thrown when parsing <filepath>

[pmlk]

While I was refactoring some of my imports I ran into ERROR: Unrecoverable exception thrown when parsing <filepath> This should NEVER happen. If encountered, please open an issue: https://github.com/PyCQA/isort/issues/new

Since it nicely asked to submit an issue, here I am.

I quickly found the issue and was able to fix it manually: one of my imports was missing a space between . and import:

from ..import some_module

Adding the missing space fixed the problem.

Hope it helps someone. Feel free to close if you deem it irrelevant to this library.

Traceback

Traceback (most recent call last):
  File "/Users/pmlk/Library/Caches/pypoetry/virtualenvs/backend-6xSfTYP9-py3.9/bin/isort", line 8, in <module>
    sys.exit(main())
  File "/Users/pmlk/Library/Caches/pypoetry/virtualenvs/backend-6xSfTYP9-py3.9/lib/python3.9/site-packages/isort/main.py", line 1226, in main
    for sort_attempt in attempt_iterator:
  File "/Users/pmlk/Library/Caches/pypoetry/virtualenvs/backend-6xSfTYP9-py3.9/lib/python3.9/site-packages/isort/main.py", line 1210, in <genexpr>
    sort_imports(  # type: ignore
  File "/Users/pmlk/Library/Caches/pypoetry/virtualenvs/backend-6xSfTYP9-py3.9/lib/python3.9/site-packages/isort/main.py", line 93, in sort_imports
    incorrectly_sorted = not api.sort_file(
  File "/Users/pmlk/Library/Caches/pypoetry/virtualenvs/backend-6xSfTYP9-py3.9/lib/python3.9/site-packages/isort/api.py", line 429, in sort_file
    changed = sort_stream(
  File "/Users/pmlk/Library/Caches/pypoetry/virtualenvs/backend-6xSfTYP9-py3.9/lib/python3.9/site-packages/isort/api.py", line 210, in sort_stream
    changed = core.process(
  File "/Users/pmlk/Library/Caches/pypoetry/virtualenvs/backend-6xSfTYP9-py3.9/lib/python3.9/site-packages/isort/core.py", line 422, in process
    parsed_content = parse.file_contents(import_section, config=config)
  File "/Users/pmlk/Library/Caches/pypoetry/virtualenvs/backend-6xSfTYP9-py3.9/lib/python3.9/site-packages/isort/parse.py", line 522, in file_contents
    if "," in import_string.split(just_imports[-1])[-1]:
IndexError: list index out of range