Grabbing a body of text using regex excluding specific conditions

Question

I\'m using Python regex to grab the body of a parsed email which may contain nothing or may look something like this:

Some coherent sentence.

Answer 1

You may use

(?s)\A.*?(?=\n_)

It matches

• (?s) - re.DOTALL inline flag
• \A - start of string
• .*? - any 0+ chars, as few as possible till the first occurrence of
• (?=\n_) - a newline followed with _ char.