Cycle not detected with empty __init__.py

[shobsi]

Have a circular import

(venv) $ tree .
.
├── alpha.py
└── beta.py

1 directory, 2 files

(venv)  $ cat alpha.py
from beta import Class2
class Class1:
    obj = Class2()

(venv)  $ cat beta.py
from alpha import Class1
class Class2:
    obj = Class1()

Python fails with the ImportError as expected:

(venv)  $ python alpha.py
Traceback (most recent call last):
  File "/cur/dir/alpha.py", line 1, in <module>
    from beta import Class2
  File "/cur/dir/beta.py", line 1, in <module>
    from alpha import Class1
  File "/cur/dir/alpha.py", line 1, in <module>
    from beta import Class2
ImportError: cannot import name 'Class2' from partially initialized module 'beta' (most likely due to a circular import) (/cur/dir/beta.py)

pycycle detects the cycle as expected:

(venv) $ pycycle --here
Project successfully transformed to AST, checking imports for cycles..
Cycle Found :(
alpha -> beta: Line 1 =>> alpha
Finished.

Create an empty __init__.py in the directory. After that pycycle can no longer detect the cycle.

(venv) $ touch __init__.py
(venv) $ pycycle --here
Project successfully transformed to AST, checking imports for cycles..
No worries, no cycles here!
If you think some cycle was missed, please open an Issue on Github.
Finished.