python智能桌面系统代码

以下是一个简单的Python智能桌面系统代码示例，使用了PyQt5、SpeechRecognition和wikipedia库：

import sys
import time
import wikipedia
import speech_recognition as sr
from PyQt5.QtWidgets import QApplication, QMainWindow, QPlainTextEdit, QPushButton, QLabel, QLineEdit

class DesktopAssistant(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle('Desktop Assistant')
        self.setGeometry(100, 100, 800, 400)
        self.text_edit = QPlainTextEdit(self)
        self.text_edit.setGeometry(10, 60, 780, 300)
        self.text_edit.setReadOnly(True)
        self.label = QLabel('Say something:', self)
        self.label.setGeometry(10, 10, 100, 40)
        self.line_edit = QLineEdit(self)
        self.line_edit.setGeometry(120, 10, 500, 40)
        self.button = QPushButton('Speak', self)
        self.button.setGeometry(640, 10, 150, 40)
        self.button.clicked.connect(self.listen)

    def listen(self):
        self.text_edit.clear()
        self.line_edit.clear()
        self.label.setText('Listening...')
        self.label.repaint()
        r = sr.Recognizer()
        with sr.Microphone() as source:
            audio = r.listen(source)
        self.label.setText('Recognizing...')
        self.label.repaint()
        try:
            query = r.recognize_google(audio, language='en-US')
            self.line_edit.setText(query)
            self.label.setText('Querying...')
            self.label.repaint()
            result = self.process_query(query)
            self.text_edit.setPlainText(result)
            self.label.setText('Say something:')
        except sr.UnknownValueError:
            self.text_edit.setPlainText('Sorry, I could not recognize your voice.')
            self.label.setText('Say something:')
        except sr.RequestError:
            self.text_edit.setPlainText('Sorry, I could not contact Google Speech Recognition service.')
            self.label.setText('Say something:')

    def process_query(self, query):
        result = ''
        if 'time' in query:
            result = 'The time is ' + time.strftime('%H:%M:%S')
        elif 'date' in query:
            result = 'Today is ' + time.strftime('%Y-%m-%d')
        elif 'search' in query:
            query = query.replace('search', '').strip()
            result = wikipedia.summary(query, sentences=2)
        else:
            result = 'Sorry, I do not understand your query.'
        return result

if __name__ == '__main__':
    app = QApplication(sys.argv)
    desktop_assistant = DesktopAssistant()
    desktop_assistant.show()
    sys.exit(app.exec_())

注意：这只是一个简单的示例，还有很多需要改进的地方，例如处理异常和错误、优化语音识别和查询等。