sentences.py

import re

with open("infile.txt", "r") as fp:
    queue=""
    match=r"[?!.]+\s+"
    for rawLine in fp:
        rawLine=" ".join((queue, rawLine))
        queue=""
        lines=rawLine.split(match)
        if re.search(match+"$", rawLine):
            queue=lines.pop()
        for realLine in lines:
            #feed line to bot here