The meaning of the Regexp is create a 3 letters acronym from a given string. i.e. Ruby on Rails = RoR HyperText Markup Languague = HTML

asc

validate html tags should have end tags, closing single, double quotes

Regex for parsing tv torrent

Has group match to match 2nd third and fourth octets preceded by "."

Matches

used for assignment elements in the study plan api

match with or without prevailing/trailing slashes

to catch all valid emails

Extrat hall and stand numbers out of a mail subject.

Get image urls from Google Speed test

Find a number with a value in the range of 2 through 999.

Because 're' module in python do not support \p{L} unicode class need to use simplistic regex with \w instead \p{L}. But such regexp also match digits like #123, #003 and so on. So it need to further filter out digit-only tags.