Repeatedly extract a line between two delimiters in a text file, Python

Question

I have a text file in the following format:

DELIMITER1
extract me
extract me
extract me
DELIMITER2

I\'d like to extract every block of

Answer 1

This should do what you want:

import re
def GetTheSentences(file):
    start_rx = re.compile('DELIMITER')
    end_rx = re.compile('DELIMITER2')

    start = False
    output = []
    with open(file, 'rb') as datafile:
         for line in datafile.readlines():
             if re.match(start_rx, line):
                 start = True
             elif re.match(end_rx, line):
                 start = False
             if start:
                  output.append(line)
    return output

Your previous version looks like it's supposed to be an iterator function. Do you want your output returned one item at a time? That's slightly different.