【PyQt5-Qt Designer】文本框读写操作

主要内容：
1、读、写输入控件（Input Widgets）中的内容（str）
2、保存数据到txt文件
3、从txt文件中读内容，与输入控件中内容比较
【PyQt5-Qt Designer】文本框读写操作
将上述各种输入控件（Input Widgets）中的内容保存到txt文件中：
# -*- coding: utf-8 -*-

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(839, 589)
        Dialog.setSizeGripEnabled(True)
        self.pushButton = QtWidgets.QPushButton(Dialog)
        self.pushButton.setGeometry(QtCore.QRect(210, 390, 91, 41))
        self.pushButton.setObjectName("pushButton")
        self.pushButton_2 = QtWidgets.QPushButton(Dialog)
        self.pushButton_2.setGeometry(QtCore.QRect(530, 390, 91, 41))
        self.pushButton_2.setObjectName("pushButton_2")
        self.lineEdit = QtWidgets.QLineEdit(Dialog)
        self.lineEdit.setGeometry(QtCore.QRect(140, 460, 291, 20))
        self.lineEdit.setObjectName("lineEdit")
        self.textEdit = QtWidgets.QTextEdit(Dialog)
        self.textEdit.setGeometry(QtCore.QRect(140, 110, 541, 261))
        self.textEdit.setObjectName("textEdit")
        self.plainTextEdit = QtWidgets.QPlainTextEdit(Dialog)
        self.plainTextEdit.setGeometry(QtCore.QRect(140, 490, 441, 91))
        self.plainTextEdit.setObjectName("plainTextEdit")
        self.spinBox = QtWidgets.QSpinBox(Dialog)
        self.spinBox.setGeometry(QtCore.QRect(30, 290, 81, 22))
        self.spinBox.setObjectName("spinBox")
        self.doubleSpinBox = QtWidgets.QDoubleSpinBox(Dialog)
        self.doubleSpinBox.setGeometry(QtCore.QRect(30, 340, 81, 22))
        self.doubleSpinBox.setProperty("showGroupSeparator", False)
        self.doubleSpinBox.setPrefix("")
        self.doubleSpinBox.setProperty("value", 3.14)
        self.doubleSpinBox.setObjectName("doubleSpinBox")
        self.comboBox = QtWidgets.QComboBox(Dialog)
        self.comboBox.setGeometry(QtCore.QRect(30, 60, 141, 22))
        self.comboBox.setObjectName("comboBox")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.fontComboBox = QtWidgets.QFontComboBox(Dialog)
        self.fontComboBox.setGeometry(QtCore.QRect(230, 60, 189, 22))
        self.fontComboBox.setObjectName("fontComboBox")

        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        _translate = QtCore.QCoreApplication.translate
        Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
        self.pushButton.setText(_translate("Dialog", "确定/保存"))
        self.pushButton_2.setText(_translate("Dialog", "退出"))
        self.lineEdit.setText(_translate("Dialog", "123"))
        self.textEdit.setHtml(_translate("Dialog", "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\" \"http://www.w3.org/TR/REC-html40/strict.dtd\">\n"
"<html><head><meta name=\"qrichtext\" content=\"1\" /><style type=\"text/css\">\n"
"p, li { white-space: pre-wrap; }\n"
"</style></head><body style=\" font-family:\'SimSun\'; font-size:9pt; font-weight:400; font-style:normal;\">\n"
"<p style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\"><span style=\" font-size:12pt;\">input content：</span></p></body></html>"))
        self.plainTextEdit.setPlainText(_translate("Dialog", "plainTextEdit"))
        self.comboBox.setItemText(0, _translate("Dialog", "item1"))
        self.comboBox.setItemText(1, _translate("Dialog", "item2"))
        self.comboBox.setItemText(2, _translate("Dialog", "item3"))
        self.comboBox.setItemText(3, _translate("Dialog", "item4"))
        self.comboBox.setItemText(4, _translate("Dialog", "item5"))
        self.comboBox.setItemText(5, _translate("Dialog", "item6"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    Dialog = QtWidgets.QDialog()
    ui = Ui_Dialog()
    ui.setupUi(Dialog)
    Dialog.show()
    sys.exit(app.exec_())
Ui文件