pyBookTitlesRegex

textlist = ["Acts 1.txt", "1 Chronicles 1.txt", "2 Samuel 15.txt"]

for text in textlist:
    mylist = re.split('([\s\.]+)', text)
    if mylist[-1] == "txt":
        mylist.pop(-1)
    res = ""
    digitctr = 0
    for s in mylist:
        if s.isdigit():                 # process a digit group
            if res:
                digitctr += 1
                if digitctr == 1:           # 1st digit group after title is chapter
                    res += "Chapter "
                elif digitctr == 2:         # 2nd digit group after title
                    res += "Paragraph "        # ?????????
            res += num2words(int(s))
        elif s != '.':                           # a non-digit group
            res += s

    print(res)

# output:-
# Acts Chapter One
# One Chronicles Chapter One
# Two Samuel Chapter Fifteen