Build a Virtual Assistant Using Python - GeeksforGeeks

16 Jul, 2020
Virtual desktop assistant is an awesome thing. If you want your machine to run on your command like 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.
pyttsx3: pyttsx is a cross-platform text to speech library which 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 allow 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 which allows displaying Web-based documents to users. To install this module type 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
Speak Method will help us in taking the voice from the machine. Here is the code explanation of Speak Method
Python3
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 the assistant    engine.say(audio)            # Blocks while processing all the currently    # queued commands    engine.runAndWait()
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 satisfy we will get the desired output.
Python3
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 geeksforgeeks" in query:            speak("Opening GeeksforGeeks ")                          # 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.geeksforgeeks.com")            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 exicting 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 deskstop Assistant")
This method is for taking the commands and recognizing the command from the speech_Recognition module
Python3
# this method is for taking the commands# and recognizing the command from the# speech_Recognition module we will use# the recongizer method for recognizingdef 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
Python3
# codedef 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 """
This is just used to greet the user with a hello message.
Python3
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 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. 
Python3
if __name__ == '__main__':          # main method for executing    # the functions    Take_query()
 Complete Code:
Python3
import pyttsx3import speech_recognition as srimport 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 recognizingdef 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 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 geeksforgeeks" in query:            speak("Opening GeeksforGeeks ")                          # 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.geeksforgeeks.com")            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 exicting 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 deskstop Assistant")  if __name__ == '__main__':          # main method for executing    # the functions    Take_query()
Output:
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