Have a beginning of masked PAN output

[Gunstick]

Industry standard for masking pan is to retain max first 6 and last 4 digits.
self.pan[:6]+re.sub('\d','.',self.pan[6:-4]) + self.pan[-4:]
https://www.pcicomplianceguide.org/whats-the-best-practice-for-masking-or-truncating-pan/
Better is to show less.

Basically what I would like is to have a beginning and end of the found PAN so I can better search for it.
So first 2 last 4 would be adequate as well:
self.pan[:2]+re.sub('\d','.',self.pan[2:-4]) + self.pan[-4:]

I also replaced * by . so it's directly useable as a regexp for searching.