how to open system apps using python

1import pyttsx3
2import subprocess 
3import os
4import time
5
6
7pyttsx3.speak("Hi user")
8time.sleep(2)
9pyttsx3.speak("you can open any apps in this coming list")
10time.sleep(3)
11print("You can open any app from this list:- ")  
12print("NOTEPAD \t GOOGLE\nVirtual Box \t unity \nEXIT ")
13
14while True:
15    # take input
16    
17    print("Chat with me which app to open : ", end='')
18    p = input().upper()
19    print(p)
20  
21    if ("NOTE" in p) or ("NOTES" in p) or ("NOTEPAD" in p) :
22        pyttsx3.speak("Opening , Notepad")
23        os.system("notepad.exe")
24        
25   
26  
27    elif ("GOOGLE" in p or "CHROME" in p):
28        pyttsx3.speak("opening chrome please wait")
29        time.sleep(3)
30        subprocess.call(['C:/Program Files (x86)/Google/Chrome/Application/chrome'])
31    
32    elif "VIRTUAL BOX" in p:
33        pyttsx3.speak("opening virtual box")
34        subprocess.call(["F:\Vm\oricle\VirtualBox.exe"])
35        #time.sleep(3)
36
37    
38    elif "UNITY" in p:
39        pyttsx3.speak("Opening unity")
40        subprocess.call(['D:/unity/2020.1.17f1/Editor/Unity.exe'])
41    
42        
43    elif ("EXIT" in p) or ("QUIT" in p) or ("CLOSE" in p):
44        print("thanks")
45        time.sleep(1)
46        pyttsx3.speak("Exiting this app thanks for using this app")
47        break
48  
49    else:
50        print("Is Invalid,Please Try Again")
51        pyttsx3.speak("its Invalid,Please try again ")