用pyqt5写一个ini文件编辑工具，右键提供查找功能

可以使用QSettings类来读写ini文件，使用QFileDialog类来选择文件，使用QLineEdit类来输入查找关键字，使用QTextEdit类来显示文件内容，使用QRegularExpression类来进行查找操作。以下是一个简单的示例代码：

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QFileDialog, QLineEdit, QTextEdit, QAction
from PyQt5.QtCore import QSettings, QRegularExpression

class IniEditor(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle('Ini Editor')
        self.setGeometry(100, 100, 800, 600)

        self.textEdit = QTextEdit(self)
        self.setCentralWidget(self.textEdit)

        self.createActions()
        self.createMenus()

    def createActions(self):
        self.openAct = QAction('Open', self)
        self.openAct.setShortcut('Ctrl+O')
        self.openAct.triggered.connect(self.openFile)

        self.saveAct = QAction('Save', self)
        self.saveAct.setShortcut('Ctrl+S')
        self.saveAct.triggered.connect(self.saveFile)

        self.findAct = QAction('Find', self)
        self.findAct.setShortcut('Ctrl+F')
        self.findAct.triggered.connect(self.findText)

    def createMenus(self):
        self.fileMenu = self.menuBar().addMenu('File')
        self.fileMenu.addAction(self.openAct)
        self.fileMenu.addAction(self.saveAct)

        self.editMenu = self.menuBar().addMenu('Edit')
        self.editMenu.addAction(self.findAct)

    def openFile(self):
        fileName, _ = QFileDialog.getOpenFileName(self, 'Open File', '', 'Ini Files (*.ini)')
        if fileName:
            settings = QSettings(fileName, QSettings.IniFormat)
            self.textEdit.setPlainText(settings.value(''))

    def saveFile(self):
        fileName, _ = QFileDialog.getSaveFileName(self, 'Save File', '', 'Ini Files (*.ini)')
        if fileName:
            settings = QSettings(fileName, QSettings.IniFormat)
            settings.setValue('', self.textEdit.toPlainText())

    def findText(self):
        text, ok = QLineEdit.getText(self, 'Find', 'Enter keyword:')
        if ok:
            regex = QRegularExpression(text)
            cursor = self.textEdit.textCursor()
            cursor.movePosition(cursor.Start)
            while True:
                match = regex.match(cursor.block().text(), cursor.positionInBlock())
                if match.hasMatch():
                    cursor.setPosition(match.capturedStart())
                    cursor.movePosition(cursor.Right, cursor.KeepAnchor, len(match.capturedText()))
                    self.textEdit.setTextCursor(cursor)
                    break
                elif not cursor.movePosition(cursor.Down):
                    break

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

这个工具可以打开、保存ini文件，还可以在文件中查找关键字。右键提供查找功能可以通过在菜单栏中添加一个Find菜单项来实现。