Fix/dom issue

[darkb0ts]

What does it implement/fix? Explain your changes.

fix the re.error #393 global flag (like (?s)) that is not placed at the very beginning of the expression. In Python versions 3.6 and later, this is no longer allowed

Where has this been tested?

Yes Python Version:\ Python 3.7.9 Operating System: Window

Does this close any currently open issues?

Yes , #393

Does this add any new dependency?

No

Does this add any new command line switch/option?

No

Any other comments you would like to make?

No

Some Questions

• [ Yes] I have documented my code.
• [ Yes] I have tested my build before submitting the pull request.