这篇教程PyQt5结合QtDesigner实现文本框读写操作写得很实用，希望能帮到您。
本文主要介绍了PyQt5结合QtDesigner实现文本框读写操作，分享给大家，具体如下：
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 
将上述各种输入控件（Input Widgets）中的内容保存到txt文件中： Ui文件 # -*- coding: utf-8 -*-from PyQt5 import QtCore, QtGui, QtWidgetsclass 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_())Main文件 # -*- coding: utf-8 -*-"""Module implementing file_dailog."""import sysfrom PyQt5.QtCore import pyqtSlotfrom PyQt5.QtWidgets import QDialogfrom PyQt5 import QtWidgetsfrom Ui_file_operation import Ui_Dialogclass file_dailog(QDialog, Ui_Dialog): """ Class documentation goes here. """ def __init__(self, parent=None): super(file_dailog, self).__init__(parent) self.setupUi(self) self.pushButton.mousePressEvent = self.pushButton_clicked def pushButton_clicked(self, a): self.logging_data() @pyqtSlot() def on_pushButton_2_clicked(self): sys.exit(0) def logging_data(self): with open(r'logs/data.txt', 'w+') as f: f.write(self.textEdit.toPlainText()+'/n') f.write(self.lineEdit.text()+'/n') f.write(self.plainTextEdit.toPlainText()+'/n') f.write(self.comboBox.currentText()+'/n') f.write(self.fontComboBox.currentText()+'/n') f.write(self.fontComboBox.currentText()+'/n') f.write(str(self.spinBox.value())+'/n') f.write(str(self.doubleSpinBox.value())+'/n') if __name__ == "__main__": app = QtWidgets.QApplication(sys.argv) ui = file_dailog() ui.show() sys.exit(app.exec_())Main文件
实战案例：登录框--->输入账号密码--->与txt文件中账号密码进行验证--->进入下一个界面 
UI文件 # -*- coding: utf-8 -*-from PyQt5 import QtCore, QtGui, QtWidgetsclass Ui_ok_cancle_Dialog(object): def setupUi(self, ok_cancle_Dialog): ok_cancle_Dialog.setObjectName("ok_cancle_Dialog") ok_cancle_Dialog.resize(411, 305) ok_cancle_Dialog.setSizeGripEnabled(True) self.horizontalLayout_4 = QtWidgets.QHBoxLayout(ok_cancle_Dialog) self.horizontalLayout_4.setSizeConstraint(QtWidgets.QLayout.SetMinimumSize) self.horizontalLayout_4.setSpacing(0) self.horizontalLayout_4.setObjectName("horizontalLayout_4") self.frame = QtWidgets.QFrame(ok_cancle_Dialog) self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel) self.frame.setFrameShadow(QtWidgets.QFrame.Raised) self.frame.setObjectName("frame") self.verticalLayout = QtWidgets.QVBoxLayout(self.frame) self.verticalLayout.setObjectName("verticalLayout") self.frame_2 = QtWidgets.QFrame(self.frame) self.frame_2.setFrameShape(QtWidgets.QFrame.StyledPanel) self.frame_2.setFrameShadow(QtWidgets.QFrame.Raised) self.frame_2.setObjectName("frame_2") self.horizontalLayout = QtWidgets.QHBoxLayout(self.frame_2) self.horizontalLayout.setObjectName("horizontalLayout") self.label = QtWidgets.QLabel(self.frame_2) font = QtGui.QFont() font.setPointSize(15) font.setBold(True) font.setWeight(75) self.label.setFont(font) self.label.setObjectName("label") self.horizontalLayout.addWidget(self.label) self.lineEdit = QtWidgets.QLineEdit(self.frame_2) self.lineEdit.setMinimumSize(QtCore.QSize(0, 25)) self.lineEdit.setObjectName("lineEdit") self.horizontalLayout.addWidget(self.lineEdit) self.verticalLayout.addWidget(self.frame_2) self.frame_3 = QtWidgets.QFrame(self.frame) self.frame_3.setFrameShape(QtWidgets.QFrame.StyledPanel) self.frame_3.setFrameShadow(QtWidgets.QFrame.Raised) self.frame_3.setObjectName("frame_3") self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.frame_3) self.horizontalLayout_2.setObjectName("horizontalLayout_2") self.label_2 = QtWidgets.QLabel(self.frame_3) font = QtGui.QFont() font.setPointSize(15) font.setBold(True) font.setWeight(75) self.label_2.setFont(font) self.label_2.setObjectName("label_2") self.horizontalLayout_2.addWidget(self.label_2) self.lineEdit_2 = QtWidgets.QLineEdit(self.frame_3) self.lineEdit_2.setMinimumSize(QtCore.QSize(0, 25)) self.lineEdit_2.setText("") self.lineEdit_2.setFrame(True) self.lineEdit_2.setEchoMode(QtWidgets.QLineEdit.Password) self.lineEdit_2.setReadOnly(False) self.lineEdit_2.setObjectName("lineEdit_2") self.horizontalLayout_2.addWidget(self.lineEdit_2) self.verticalLayout.addWidget(self.frame_3) self.label_3 = QtWidgets.QLabel(self.frame) self.label_3.setMaximumSize(QtCore.QSize(16777215, 20)) font = QtGui.QFont() font.setPointSize(10) font.setBold(False) font.setWeight(50) self.label_3.setFont(font) self.label_3.setStyleSheet("color: rgb(255, 0, 0);") self.label_3.setText("") self.label_3.setAlignment(QtCore.Qt.AlignCenter) self.label_3.setObjectName("label_3") self.verticalLayout.addWidget(self.label_3) self.frame_4 = QtWidgets.QFrame(self.frame) self.frame_4.setFrameShape(QtWidgets.QFrame.StyledPanel) self.frame_4.setFrameShadow(QtWidgets.QFrame.Raised) self.frame_4.setObjectName("frame_4") self.horizontalLayout_3 = QtWidgets.QHBoxLayout(self.frame_4) self.horizontalLayout_3.setObjectName("horizontalLayout_3") self.pushButton = QtWidgets.QPushButton(self.frame_4) font = QtGui.QFont() font.setPointSize(11) font.setBold(True) font.setWeight(75) self.pushButton.setFont(font) self.pushButton.setStyleSheet("background-color: rgb(116, 255, 155);") self.pushButton.setObjectName("pushButton") self.horizontalLayout_3.addWidget(self.pushButton) spacerItem = QtWidgets.QSpacerItem(30, 20, QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Minimum) self.horizontalLayout_3.addItem(spacerItem) self.pushButton_2 = QtWidgets.QPushButton(self.frame_4) font = QtGui.QFont() font.setPointSize(11) font.setBold(True) font.setWeight(75) self.pushButton_2.setFont(font) self.pushButton_2.setStyleSheet("background-color: rgb(62, 108, 73);") self.pushButton_2.setObjectName("pushButton_2") self.horizontalLayout_3.addWidget(self.pushButton_2) self.verticalLayout.addWidget(self.frame_4) self.horizontalLayout_4.addWidget(self.frame) self.retranslateUi(ok_cancle_Dialog) QtCore.QMetaObject.connectSlotsByName(ok_cancle_Dialog) def retranslateUi(self, ok_cancle_Dialog): _translate = QtCore.QCoreApplication.translate ok_cancle_Dialog.setWindowTitle(_translate("ok_cancle_Dialog", "Dialog")) self.label.setText(_translate("ok_cancle_Dialog", "账号：")) self.label_2.setText(_translate("ok_cancle_Dialog", "密码：")) self.pushButton.setText(_translate("ok_cancle_Dialog", "确认")) self.pushButton_2.setText(_translate("ok_cancle_Dialog", "取消"))if __name__ == "__main__": import sys app = QtWidgets.QApplication(sys.argv) ok_cancle_Dialog = QtWidgets.QDialog() ui = Ui_ok_cancle_Dialog() ui.setupUi(ok_cancle_Dialog) ok_cancle_Dialog.show() sys.exit(app.exec_())main文件 # -*- coding: utf-8 -*-from PyQt5.QtCore import pyqtSlotfrom PyQt5.QtWidgets import QDialogfrom PyQt5 import QtWidgetsfrom Ui_ok_cancel import Ui_ok_cancle_Dialogclass ok_cancle_Dialog(QDialog, Ui_ok_cancle_Dialog): def __init__(self, parent=None): super(ok_cancle_Dialog, self).__init__(parent) self.setupUi(self) @pyqtSlot() def on_pushButton_clicked(self): f = open(r'logs/account.txt', 'r+',encoding='utf8') #从logs文件夹下读取account.txt文件 中的账号 密码 data = f.readlines() confirm = data[0].rstrip('/n') == self.lineEdit.text() and data[1] == self.lineEdit_2.text() if confirm: from selenium import webdriver browser = webdriver.Chrome() browser.get("http://www.taobao.com") browser.maximize_window() else: #print('=======================') self.label_3.setText('账号或密码错误请重新输入') f.close() @pyqtSlot() def on_pushButton_2_clicked(self): self.lineEdit.setText('') self.lineEdit_2.setText('') self.label_3.setText('')if __name__ == "__main__": import sys app = QtWidgets.QApplication(sys.argv) ui = ok_cancle_Dialog() ui.show() sys.exit(app.exec_())到此这篇关于PyQt5结合QtDesigner实现文本框读写操作的文章就介绍到这了,更多相关PyQt5 文本框读写操作内容请搜索51zixue.net以前的文章或继续浏览下面的相关文章希望大家以后多多支持51zixue.net！
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