Build a Virtual Assistant using Python

In this tutorial you will learn, How to build a virtual assistant for your desktop using Python.

The steps are required to build virtual assistant is given below:

• Import all modules
• Speak function
• Start Virtual assistant
• Get Query function
• Recognize user voice

Make sure to install all the required libraries and dependencies before running the code.

# import libraries
import pyttsx3
import speech_recognition as sr
import webbrowser
import wikipedia

This function will make the virtual assistant speak.

def speak(audio):
    engine  = pyttsx3.init()
    voices  = engine.getProperty('voices')
    engine.setProperty('voice', voices[0].id)
    engine.say(audio)
    engine.runAndWait()
    
def hello():
    speak("""Hello there I am your assistant. Tell me how may I help you""")

if __name__ == '__main__':
    # main method for executing the functions
    take_query()

You can add more queries such as tell me a date or time etc.

def take_query():
    hello()
    while(True):
        query   = take_command().lower()
        if "Hello How are you" in query:
            speak("I am fine")
        elif "open google" in query:
            speak("Opening Google")
            webbrowser.open("https://www.google.com")
        elif "bye" in query:
            speak("OK Bye")
            exit()
        elif "from wikipedia" in query:
            speak("Checking in Wikipedia")
            query   = query.replace("wikipedia", "")
            result  = wikipedia.summary(query, sentences=2)
            speak("According to Wikipedia")
            speak(result)

This function will recognize the what is your speaking.

def take_command():
    r   = sr.Recognizer()
    with sr.Microphone() as source:
        print("Listening")
        r.pause_threshold   = 0.7
        audio   = r.listen(source)
        try:
            print("Recognizing ...")
            query = r.recognize_google(audio, language='en-in')
            print("The command is printed = ", query)
        except Exception as e:
            print(e)
            print("Please say it again!")
            return "None" 
        return query

# import libraries
import pyttsx3
import speech_recognition as sr
import webbrowser
import wikipedia

def speak(audio):
    engine  = pyttsx3.init()
    voices  = engine.getProperty('voices')
    engine.setProperty('voice', voices[0].id)
    engine.say(audio)
    engine.runAndWait()

def hello():
    speak("""Hello there I am your assistant. Tell me how may I help you""")

def take_command():
    r   = sr.Recognizer()
    with sr.Microphone() as source:
        print("Listening")
        r.pause_threshold   = 0.7
        audio   = r.listen(source)
        try:
            print("Recognizing ...")
            query = r.recognize_google(audio, language='en-in')
            print("The command is printed = ", query)
        except Exception as e:
            print(e)
            print("Please say it again!")
            return "None" 
        return query

def take_query():
    hello()
    while(True):
        query   = take_command().lower()
        if "Hello How are you" in query:
            speak("I am fine")
        elif "open google" in query:
            speak("Opening Google")
            webbrowser.open("https://www.google.com")
        elif "bye" in query:
            speak("OK Bye")
            exit()
        elif "from wikipedia" in query:
            speak("Checking in Wikipedia")
            query   = query.replace("wikipedia", "")
            result  = wikipedia.summary(query, sentences=2)
            speak("According to Wikipedia")
            speak(result)

if __name__ == '__main__':
    # main method for executing the functions
    take_query()