使用Python构建虚拟助手

虚拟桌面助手是一个很棒的东西。如果你想让你的机器像 Jarvis 对 Tony 那样按照你的命令运行。是的，有可能。可以使用Python。 Python提供了一个很好的主要库，以便我们可以使用它来制作虚拟助手。 Windows 有 Sapi5，Linux 有 Espeak，可以帮助我们从我们的机器中获得声音。这是一个弱AI

需要的模块

• pyttsx3： pyttsx 是一个跨平台的文本到语音库，独立于平台。使用这个库进行文本到语音转换的主要优点是它可以离线工作。要安装此模块，请在终端中键入以下命令。

pip install pyttsx3

• SpeechRecognition：它允许我们将音频转换为文本以进行进一步处理。要安装此模块，请在终端中键入以下命令。

pip install SpeechRecognition

• 浏览器：它 提供了一个高级界面，允许向用户显示基于 Web 的文档。要安装此模块，请在终端中键入以下命令。

pip install webbrowser

• Wikipedia：用于从 Wikipedia 网站获取各种信息。要安装此模块，请在终端中键入以下命令。

pip install wikipedia

用于虚拟助手的方法

1) 说话方式

说话方法将帮助我们从机器中获取声音。这里是 Speak Method 的代码解释

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()

2）采取查询方式

此方法将检查条件。如果条件为真，它将返回输出。如果条件满足，我们可以添加任何数字，如果条件满足，我们将获得所需的输出。

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")

3) takeCommand 方法

此方法用于获取命令并识别来自 Speech_Recognition 模块的命令

Python3

# 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 方法

Python3

# 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
 """

4) 你好方法

这只是用来向用户打招呼。

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")

5）主要方法

Main 方法是执行所有文件的方法，因此我们将在这里调用 Take_query 方法，以便它可以识别并告诉或给我们所需的输出。

Python3

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

完整代码：

Python3

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 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()

输出：