got this error
Traceback (most recent call last):
File "/opt/virtualenvs/python3/lib/python3.8/site-packages/pyttsx3/init.py", line 20, in init
eng = _activeEngines[driverName]
File "/usr/lib/python3.8/weakref.py", line 131, in getitem
o = self.data[key]
KeyError: None

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "main.py", line 6, in <module>
engine = pyttsx3.init()
File "/opt/virtualenvs/python3/lib/python3.8/site-packages/pyttsx3/init.py", line 22, in init
eng = Engine(driverName, debug)
File "/opt/virtualenvs/python3/lib/python3.8/site-packages/pyttsx3/engine.py", line 30, in init
self.proxy = driver.DriverProxy(weakref.proxy(self), driverName, debug)
File "/opt/virtualenvs/python3/lib/python3.8/site-packages/pyttsx3/driver.py", line 50, in init
self._module = importlib.import_module(name)
File "/usr/lib/python3.8/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 783, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/opt/virtualenvs/python3/lib/python3.8/site-packages/pyttsx3/drivers/espeak.py", line 9, in <module>
from . import _espeak, toUtf8, fromUtf8
File "/opt/virtualenvs/python3/lib/python3.8/site-packages/pyttsx3/drivers/_espeak.py", line 18, in <module>
dll = cdll.LoadLibrary('libespeak.so.1')
File "/usr/lib/python3.8/ctypes/init.py", line 451, in LoadLibrary
return self._dlltype(name)
File "/usr/lib/python3.8/ctypes/init.py", line 373, in init
self._handle = _dlopen(self._name, mode)
OSError: libespeak.so.1: cannot open shared object file: No such file or directory

try doing pip install pyttsx3. If it still doesn't work, it's probably not available in repl.it