Text string that causes validators.domain to lock at 100% CPU usage

[CrimsonGlory]

The following string makes validators 0.12.2 get lock at 100% CPU forever.

crazy_string='p.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.'

Logs:

root@db8fc13972fc:/myapp# pip list | grep validators
validators         0.12.2     
root@db8fc13972fc:/myapp# python --version
Python 2.7.15
root@db8fc13972fc:/myapp# python
Python 2.7.15 (default, May  5 2018, 03:27:20) 
[GCC 6.3.0 20170516] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import validators
>>> crazy_string='p.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.'
>>> validators.domain(crazy_string)

(The validators.domain(crazy_string) never ends. If I go to htop, the python process is at 100% CPU)

With version 0.12.1 this doesn't happen.

Logs:

root@db8fc13972fc:/myapp# pip list | grep validators
validators         0.12.1     
root@db8fc13972fc:/myapp# python
Python 2.7.15 (default, May  5 2018, 03:27:20) 
[GCC 6.3.0 20170516] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import validators
>>> crazy_string='p.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.'
>>> validators.domain(crazy_string)
ValidationFailure(func=domain, args={'value': 'p.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.wo.'})

The environment for tests was python:2.7-stretch Docker image from 2 days ago.

Temporary fix:
uninstall 0.12.2 and install 0.12.1

[CrimsonGlory]

This was fixed in version 0.12.6