Match all lowercase letters which are followed by two or more capital letters then three or more digits: (the capital letters and digits should not be included in the match) in python
I tried this but not working:[a-z]?![A-Z]{2,}[0-9]{3,}.
Use your current approach, but put the capital letters followed by numbers assertion into a positive lookahead:
[a-z](?=[A-Z]{2,}[0-9]{3,})
This pattern says to:
[a-z] match a lowercase letter
(?= then lookahead (but do NOT consume)
[A-Z]{2,} 2 or more uppercase letters
[0-9]{3,} followed by 3 or more digits
)
Lookaheads assert, but not consume, in a regex pattern.