用pyqt将B盘下的软件包解压代码

以下是使用PyQt5实现在B盘下解压缩软件包的示例代码：

import os
import zipfile
from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QPushButton, QFileDialog, QMessageBox


class App(QWidget):
    def __init__(self):
        super().__init__()

        self.title = '解压缩软件包'
        self.left = 100
        self.top = 100
        self.width = 400
        self.height = 150

        self.initUI()

    def initUI(self):
        self.setWindowTitle(self.title)
        self.setGeometry(self.left, self.top, self.width, self.height)

        self.lbl_path = QLabel('选择文件：', self)
        self.lbl_path.move(20, 20)

        self.txt_path = QLineEdit(self)
        self.txt_path.move(100, 20)
        self.txt_path.resize(200, 20)

        self.btn_path = QPushButton('浏览', self)
        self.btn_path.move(310, 20)
        self.btn_path.clicked.connect(self.openFileDialog)

        self.btn_unzip = QPushButton('解压缩', self)
        self.btn_unzip.move(20, 60)
        self.btn_unzip.clicked.connect(self.unzip)

        self.show()

    def openFileDialog(self):
        options = QFileDialog.Options()
        options |= QFileDialog.DontUseNativeDialog
        fileName, _ = QFileDialog.getOpenFileName(self, '选择文件', 'B:\\', 'Zip Files (*.zip)', options=options)
        if fileName:
            self.txt_path.setText(fileName)

    def unzip(self):
        file_path = self.txt_path.text()

        if not file_path.endswith('.zip'):
            QMessageBox.warning(self, '错误', '请选择zip文件！')
            return

        if not os.path.exists(file_path):
            QMessageBox.warning(self, '错误', '文件不存在！')
            return

        with zipfile.ZipFile(file_path, 'r') as zip_ref:
            zip_ref.extractall('B:\\')

        QMessageBox.information(self, '提示', '解压缩完成！')


if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    ex = App()
    sys.exit(app.exec_())

运行代码后，窗口中有一个文本框和两个按钮，可以选择B盘下的zip文件并解压缩到B盘根目录。