Python implementation of five string operations

string_ops.py

from typing import Generator


def clean_up(s: str) -> str:
    return next(split_into_sentences(fix_hyphenation(fix_whitespace(s))))

def fix_whitespace(s: str) -> str:
    return s.replace("\n", " ")

def fix_hyphenation(s: str) -> str:
    return s.replace("- ", "")

def split_into_sentences(s: str) -> Generator[str, None, None]:
    return (ensure_ends_with_period(sentence) for sentence in s.split(". "))

def ensure_ends_with_period(sentence: str) -> str:
    return sentence + ("" if sentence.endswith(".") else ".")