import pyttsx3

def onStart(name):
   print("starting", name)
def onWord(name, location, length):
   print("word", name, location, length)
def onEnd(name, completed):
   print("finishing", name, completed)
engine = pyttsx3.init()
engine.connect("started-utterance", onStart)
engine.connect("started-word", onWord)
engine.connect("finished-utterance", onEnd)
engine.say("The quick brown fox jumped over the lazy dog.")
engine.runAndWait()

starting None
word None 0 3
word None 4 5
word None 10 5
word None 16 3
word None 20 6
word None 27 4
word None 32 3
word None 36 4
word None 41 4
finishing None True

starting None
word None 1 0
finishing None True