Indeed, @takbb,
Of course, no one knows everything (and to be honest, I’m not very good in Regexp). But I’m angry of improving myself and helping (if I can, you learn also faster that way).
I have the same feeling, I really enjoy checking your post too. Mainly because we’re not thinking the same way, independently of your level (in DS, Knime, ML, DL etc…) but also because, to me, it seems like your playing (like with Legos).
Anyway, many thanks for your advice(s).
Ps: I play in http://regex101.com/ too
Looking forward to discuss / debate with you guys. I’m always winning, even if I lose the debate ('cause I’ll learn something 
)
Br, Samir