python3 doesn't seem to have the module array, which is part of python3
standard library
It used to work fine with previous versions of cygwin.

Example program:
#!/usr/bin/env python3
from array import array

Here is what happens when it is executed:
Traceback (most recent call last):
  File "./broke.py", line 2, in <module>
    from array import array
ImportError: No module named 'array'

https://docs.python.org/3/library/array.html
says array is part of the standard library.

The code works fine with python 2.[67] (if you remove the '3' from the
first line, to get python 2.x

Included is cygcheck.out

thanks,
jeff