cvxpy: `isort` introduces bugs

Describe the bug Following the CONTRIBUTING guide, I cloned the repository and ran isort. I expected it to not make any change, as the code is fresh from repository. However, three files were changed:

cvxpy/__init__.py
cvxpy/reductions/__init__.py
cvxpy/reductions/dcp2cone/atom_canonicalizers/__init__.py

After that, when I ran

pytest cvxpy/tests/test_problem.py

I got an error: ImportError: cannot import name 'InverseData' from partially initialized module 'cvxpy.reductions' (most likely due to a circular import).

The error was gone after I reverted the changes made by isort.

To Reproduce

1. clone the repository.

2. create a new virtual environment:

      > virtualenv .venv39a --python=C:\Users\user\AppData\Local\Programs\Python\Python39\python.exe        
      > .\.venv39a\Scripts\activate

1. Setup cvxpy in development mode:

     > python setup.py develop

1. Run isort:

    > isort .

1. Run pytest on test_problem.py:

    > pytest .\cvxpy\tests\test_problem.py

Expected behavior

1. isort should not change any files.
2. The test should pass.

Output

(.venv39a) PS D:\Dropbox\ariel-algorithms\cvxpy> pytest .\cvxpy\tests\test_problem.py
============================================================= test session starts =============================================================
platform win32 -- Python 3.10.2, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: D:\Dropbox\ariel-algorithms\cvxpy, configfile: pyproject.toml
collected 0 items / 1 error

=================================================================== ERRORS ====================================================================
________________________________________________ ERROR collecting cvxpy/tests/test_problem.py _________________________________________________ 
ImportError while importing test module 'D:\Dropbox\ariel-algorithms\cvxpy\cvxpy\tests\test_problem.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
C:\Users\user\AppData\Local\Programs\Python\Python310\lib\importlib\__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
cvxpy\__init__.py:26: in <module>
    from cvxpy.problems.problem import Problem
cvxpy\problems\problem.py:35: in <module>
    from cvxpy.reductions import InverseData
cvxpy\reductions\__init__.py:18: in <module>
    from cvxpy.reductions.complex2real.complex2real import Complex2Real
cvxpy\reductions\complex2real\complex2real.py:23: in <module>
    from cvxpy.reductions import InverseData, Solution
E   ImportError: cannot import name 'InverseData' from partially initialized module 'cvxpy.reductions' (most likely due to a circular import) (D:\Dropbox\ariel-algorithms\cvxpy\cvxpy\reductions\__init__.py)
=========================================================== short test summary info =========================================================== 
ERROR cvxpy/tests/test_problem.py
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 
============================================================== 1 error in 0.62s =============================================================== 

Version

• OS: Windows 10
• CVXPY Version: Current