I created a python code that uses speech engine pyttsx3 and I basically want it to pronounce a word

Here is the code:

import pyttsx3

def say_route(bus_route): 
    #global list_all_bus, engine
    global engine

    #while True:

      # if there is a number in the bus list, it will be true because length of list > 0 
      #while list_all_bus:

         # initialise engine
    engine = pyttsx3.init()
    print(f"saying bus route: {bus_route}")  

         # initialisation
    voices = engine.getProperty('voices')
    engine.setProperty('rate', 150) # adjust speed of talking. 200 default. 
    engine.setProperty('voice', voices[1].id) # change the voice of the person talking. 0-2
    engine.say(f"going to {' '.join(bus_route)}") # seowbk commented for colab

    engine.runAndWait()
    engine.stop()

         # remove the bus number that was said (first in list)
         #list_all_bus.pop(0)

         #print(f"nlist busses NEW: {list_all_bus}")


full_route = "YISHUN"
full_route = "".join(full_route.split())
say_route(full_route)

Instead of pronouncing the word, it spells it out entirely, which is what I don’t want it to do.
Does anyone know how I can fix it?