@Yatin The exact differences are multiple and would take considerable time/space/effort to detail (and someone has probably already made something of a stab at it, so I'd just search, if I was answering in full). However, we don't use the stock Python regular expression engine. SmokeDetector uses the
regex regular expression engine, which is much closer to PCRE (or PCRE2) than it is to the Python
re
engine.