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Build a Virtual Assistant Using Python

Build a Virtual Assistant Using Python

By Pratyush Mishra

Proxlight
·Sep 21, 2022·

8 min read

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Hi everyone👋, a virtual desktop assistant is an awesome thing. If you want your machine to run on your command as Jarvis did for Tony. Yes, it is possible. It is possible using Python. Python offers a good major library so that we can use it for making a virtual assistant. Windows has Sapi5 and Linux has Espeak which can help us in having the voice from our machine. It is a weak A.I.

You can refer to my YouTube video to see a working tutorial for better understanding and a step-by-step guide of the same.

Modules needed

  • pyttsx3 : pyttsx is a cross-platform text-to-speech library that is platform-independent. The major advantage of using this library for text-to-speech conversion is that it works offline. To install this module type the below command in the terminal.
 pip install pyttsx3
  • SpeechRecognition : It allows us to convert audio into text for further processing. To install this module type the below command in the terminal.
pip install SpeechRecognition
  • webbrowser : It provides a high-level interface that allows displaying Web-based documents to users, it is generally pre-installed with python. If not then install this module by typing the below command in the terminal.
pip install webbrowser
  • Wikipedia: It is used to fetch a variety of information from the Wikipedia website. To install this module type the below command in the terminal.
pip install wikipedia

Methods used for Virtual Assistant

  • Speak Method

Speak Method will help us in taking the voice from the machine. Here is the code explanation of Speak Method

def speak(audio):

    engine = pyttsx3.init()
    # getter method(gets the current value
    # of engine property)
    voices = engine.getProperty('voices')

    # setter method .[0]=male voice and
    # [1]=female voice in set Property.
    engine.setProperty('voice', voices[0].id)

    # Method for the speaking of the assistant
    engine.say(audio) 

    # Blocks while processing all the currently
    # queued commands
    engine.runAndWait()
  • Take query method

This method will check for the condition. If the condition is true it will return output. We can add any number if conditions for it and if the condition satisfies we will get the desired output.

def Take_query():

    # calling the Hello function for
    # making it more interactive
    Hello()

    # This loop is infinite as it will take
    # our queries continuously until and unless
    # we do not say bye to exit or terminate
    # the program
    while(True):

        # taking the query and making it into
        # lower case so that most of the times
        # query matches and we get the perfect
        # output
        query = takeCommand().lower()
        if "open proxlight" in query:
            speak("Opening proxlight ")

            # in the open method we just to give the link
            # of the website and it automatically open
            # it in your default browser
            webbrowser.open("www.proxlight.github.io")
            continue

        elif "open google" in query:
            speak("Opening Google ")
            webbrowser.open("www.google.com")
            continue

        elif "which day it is" in query:
            tellDay()
            continue

        elif "tell me the time" in query:
            tellTime()
            continue

        # this will exit and terminate the program
        elif "bye" in query:
            speak("Bye. Check Out GFG for more exciting things")
            exit()

        elif "from wikipedia" in query:

            # if any one wants to have a information
            # from wikipedia
            speak("Checking the wikipedia ")
            query = query.replace("wikipedia", "")

            # it will give the summary of 4 lines from
            # wikipedia we can increase and decrease
            # it also.
            result = wikipedia.summary(query, sentences=4)
            speak("According to wikipedia")
            speak(result)

        elif "tell me your name" in query:
            speak("I am Jarvis. Your desktop Assistant")
  • TakeCommand method

This method is for taking the commands and recognizing the command from the speech_Recognition module.

# this method is for taking the commands
# and recognizing the command from the
# speech_Recognition module we will use
# the recongizer method for recognizing
def takeCommand():

    r = sr.Recognizer()

    # from the speech_Recognition module
    # we will use the Microphone module
    # for listening the command
    with sr.Microphone() as source:
        print('Listening')

        # seconds of non-speaking audio before
        # a phrase is considered complete
        r.pause_threshold = 0.7
        audio = r.listen(source)

        # Now we will be using the try and catch
        # method so that if sound is recognized
        # it is good else we will have exception
        # handling
        try:
            print("Recognizing")

            # for Listening the command in indian
            # english we can also use 'hi-In'
            # for hindi recognizing
            Query = r.recognize_google(audio, language='en-in')
            print("the command is printed=", Query)

        except Exception as e:
            print(e)
            print("Say that again sir")
            return "None"

        return Query
  • TellTime method
# code
def tellTime(self):
# This method will give the time
    time = str(datetime.datetime.now())
      # the time will be displayed like this "2020-06-05 17:50:14.582630"
    # nd then after slicing we can get time
    print(time)
    hour = time[11:13]
    min = time[14:16]
    self.Speak(self, "The time is sir" + hour + "Hours and" + min + "Minutes")    
"""
 This method will take time and slice it "2020-06-05 17:50:14.582630" from 11 to 12 for hour
 and 14-15 for min and then speak function will be called and then it will speak the current
 time
 """
  • Hello method

This is just used to greet the user with a hello message.

def Hello():
    # This function is for when the assistant
    # is called it will say hello and then
    # take query
    speak("hello sir I am your desktop assistant. /
          Tell me how may I help you")
  • Main method

Main method is the method where all the files get executed so we will call the Take_query method here so that it can recognize and tell or give us the desired output.

if __name__ == '__main__':

    # main method for executing
    # the functions
    Take_query()

Complete Code:

import pyttsx3
import speech_recognition as sr
import webbrowser 
import datetime 
import wikipedia


# this method is for taking the commands
# and recognizing the command from the
# speech_Recognition module we will use
# the recongizer method for recognizing
def takeCommand():

    r = sr.Recognizer()

    # from the speech_Recognition module
    # we will use the Microphone module
    # for listening the command
    with sr.Microphone() as source:
        print('Listening')

        # seconds of non-speaking audio before
        # a phrase is considered complete
        r.pause_threshold = 0.7
        audio = r.listen(source)

        # Now we will be using the try and catch
        # method so that if sound is recognized
        # it is good else we will have exception
        # handling
        try:
            print("Recognizing")

            # for Listening the command in indian
            # english we can also use 'hi-In'
            # for hindi recognizing
            Query = r.recognize_google(audio, language='en-in')
            print("the command is printed=", Query)

        except Exception as e:
            print(e)
            print("Say that again sir")
            return "None"

        return Query

def speak(audio):

    engine = pyttsx3.init()
    # getter method(gets the current value
    # of engine property)
    voices = engine.getProperty('voices')

    # setter method .[0]=male voice and
    # [1]=female voice in set Property.
    engine.setProperty('voice', voices[0].id)

    # Method for the speaking of the assistant
    engine.say(audio) 

    # Blocks while processing all the currently
    # queued commands
    engine.runAndWait()

def tellDay():

    # This function is for telling the
    # day of the week
    day = datetime.datetime.today().weekday() + 1

    #this line tells us about the number
    # that will help us in telling the day
    Day_dict = {1: 'Monday', 2: 'Tuesday',
                3: 'Wednesday', 4: 'Thursday',
                5: 'Friday', 6: 'Saturday',
                7: 'Sunday'}

    if day in Day_dict.keys():
        day_of_the_week = Day_dict[day]
        print(day_of_the_week)
        speak("The day is " + day_of_the_week)


def tellTime():

    # This method will give the time
    time = str(datetime.datetime.now())

    # the time will be displayed like
    # this "2020-06-05 17:50:14.582630"
    #nd then after slicing we can get time
    print(time)
    hour = time[11:13]
    min = time[14:16]
    speak(self, "The time is sir" + hour + "Hours and" + min + "Minutes")   

def Hello():

    # This function is for when the assistant
    # is called it will say hello and then
    # take query
    speak("hello sir I am your desktop assistant. /
          Tell me how may I help you")


def Take_query():

    # calling the Hello function for
    # making it more interactive
    Hello()

    # This loop is infinite as it will take
    # our queries continuously until and unless
    # we do not say bye to exit or terminate
    # the program
    while(True):

        # taking the query and making it into
        # lower case so that most of the times
        # query matches and we get the perfect
        # output
        query = takeCommand().lower()
        if "open Proxlight" in query:
            speak("Opening Proxlight ")

            # in the open method we just to give the link
            # of the website and it automatically open
            # it in your default browser
            webbrowser.open("www.Proxlight.github.io")
            continue

        elif "open google" in query:
            speak("Opening Google ")
            webbrowser.open("www.google.com")
            continue

        elif "which day it is" in query:
            tellDay()
            continue

        elif "tell me the time" in query:
            tellTime()
            continue

        # this will exit and terminate the program
        elif "bye" in query:
            speak("Bye. Check Out GFG for more exciting things")
            exit()

        elif "from wikipedia" in query:

            # if any one wants to have a information
            # from wikipedia
            speak("Checking the wikipedia ")
            query = query.replace("wikipedia", "")

            # it will give the summary of 4 lines from
            # wikipedia we can increase and decrease
            # it also.
            result = wikipedia.summary(query, sentences=4)
            speak("According to wikipedia")
            speak(result)

        elif "tell me your name" in query:
            speak("I am Jarvis. Your desktop Assistant")

if __name__ == '__main__':

    # main method for executing
    # the functions
    Take_query()

Alright, guys! I hope this article was helpful for you if it is the leave your comments below. I will meet you in another article until then KEEP CODING🤗.

 
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