1import logging 

2from typing import Optional 

3import pyttsx3 

4 

5 

6class TextToSpeechService: 

7 """The TextToSpeechService is responsible for speech synthesis.""" 

8 

9 tts: pyttsx3.Engine 

10 

11 def __init__(self, voice_id: Optional[str] = None) -> None: 

12 self.tts = pyttsx3.init() 

13 

14 voices = [voice.id for voice in self.tts.getProperty('voices')] 

15 if not voices: 15 ↛ 16line 15 didn't jump to line 16, because the condition on line 15 was never true

16 logging.warning( 

17 "No voices were found - you may be missing additional dependencies on your system before you will hear any voice output.") 

18 return 

19 

20 logging.info("Found voices: {}.".format(", ".join(voices))) 

21 

22 if voice_id: 

23 if voice_id in voices: 

24 self.tts.setProperty('voice', voice_id) 

25 logging.info(f"Using voice: {voice_id}.") 

26 else: 

27 logging.warning( 

28 f"Using the default voice due to an unknown voice_id: {voice_id}.") 

29 else: 

30 logging.info( 

31 "Using the default voice as no voice_id was provided.") 

32 

33 def say(self, text: str) -> None: 

34 """Converts the text into speech and outputs the audio. 

35 

36 Args: 

37 text (str): The text to say. 

38 """ 

39 

40 self.tts.say(text) 

41 self.tts.runAndWait()