this is my error when i executed 
import pyttsx3
engine = pyttsx3.init('sapi5')
voices = engine.getProperty('voices')
print(voices)
 
def speak(audio):
    pass
C:\Users\rhydham90>python c:/Users/rhydham90/Desktop/EDITH/rhydham.py
Traceback (most recent call last):
  File "C:\Users\rhydham90\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pyttsx3\__init__.py",
line 20, in init
    eng = _activeEngines[driverName]
  File "C:\Users\rhydham90\AppData\Local\Programs\Python\Python36-32\lib\weakref.py", line 137, in __getitem__
    o = self.data[key]()
KeyError: 'sapi5'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "C:\Users\rhydham90\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pyttsx3\drivers\sapi5.py", line 3, in <module>
    from comtypes.gen import SpeechLib  # comtypes
ImportError: cannot import name 'SpeechLib'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "c:/Users/rhydham90/Desktop/EDITH/rhydham.py", line 3, in <module>
    engine = pyttsx3.init('sapi5')
  File "C:\Users\rhydham90\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pyttsx3\__init__.py",
line 22, in init
    eng = Engine(driverName, debug)
  File "C:\Users\rhydham90\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pyttsx3\engine.py", line 30, in __init__
    self.proxy = driver.DriverProxy(weakref.proxy(self), driverName, debug)
  File "C:\Users\rhydham90\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pyttsx3\driver.py", line 50, in __init__
    self._module = importlib.import_module(name)
  File "C:\Users\rhydham90\AppData\Local\Programs\Python\Python36-32\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "C:\Users\rhydham90\AppData\Local\Programs\Python\Python36-32\lib\site-packages\pyttsx3\drivers\sapi5.py", line 6, in <module>
    engine = comtypes.client.CreateObject("SAPI.SpVoice")
  File "C:\Users\rhydham90\AppData\Local\Programs\Python\Python36-32\lib\site-packages\comtypes\client\__init__.py", line 227, in CreateObject
    clsid = comtypes.GUID.from_progid(progid)
  File "C:\Users\rhydham90\AppData\Local\Programs\Python\Python36-32\lib\site-packages\comtypes\GUID.py", line 78, in from_progid
    _CLSIDFromProgID(str(progid), byref(inst))
  File "_ctypes/callproc.c", line 918, in GetResult
OSError: [WinError -2147221005] Invalid class string