Word soup fixer, for emails written in one long line full of ellipses. I get a surprising number of these.

wordsoupfixer.py

#!/usr/bin/env python3

import sys
fixfile = sys.argv[1]

with open(fixfile) as InputFile:
    word_soup = InputFile.read()

# Strip off excess whitespace and any trailing ellipsis.
word_soup = word_soup.strip().strip(".!?")
# People use variable numbers of periods in their wild ellipses-rants,
# so let's reduce those all down to only two-period pairs; easily found
# and worked upon.
while "..." in word_soup:
    word_soup = word_soup.replace("...", "..")
# Now that dot^x is replaced with dot^2, we can split at dot^2:
word_soup = word_soup.split("..")
new_lines = []

# Bear in mind, "lines" might actually be paragraphs with proper grammar
# or newlines characters. We're just treating the ellipses, here.

for line in word_soup:
    # Remove extra whitespace and punctuation characters at either end:
    line = line.strip().strip(".!?")
    # TODO: Add simple logic to append "?" to lines beginning with common
    # query words like "How", "What" etc.
    # Convert first character to upper-case, and add a full-stop character
    # to the end to replace any stripped punctuation characters.
    line = line[0].upper() + line[1:] + "."
    # Add fixed line to new lines:
    new_lines.append(line)

# Output the fixed lines delimited by a newline character.
print('\n'.join(new_lines))