Places that I've implemented shell/utility scripts in Python tend to do so because their other application code was also in Python and Python has much more test

Places that I've implemented shell/utility scripts in Python tend to do so because their other application code was also in Python and Python has much more testing support than bash scripts will ever have. That's why I've done it before, to write tools like custom log rotating / clean-up stuff; another project that comes to mind was a data pipeline that used some Python regex stuff to clean up non-printable characters and ugly stuff from text files before importing data. Both of these projects had lots of tests to verify that the code did what we wanted it to do.