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Question

Era_of__ enlightenment

Asked:2022-07-24 21:36:18 +0800 CST2022-07-24 21:36:18 +0800 CST 2022-07-24 21:36:18 +0800 CST

如何在 lineEdit 上显示打印？

772

我正在做一个心算训练师。我开始掌握 PyQT5。
在程序中，需要显示两个随机数的乘积，并输入相乘的结果。

如何在没有界面的情况下使其清晰。我不知道如何print在 PyQT5 的输出字段中显示。

main.py文件中的这段代码：

import sys,random
from PyQt5 import QtCore, QtGui, QtWidgets
from Ui_TestGUI2_3 import Ui_TestGUI2


if __name__ == "__main__":

    app = QtWidgets.QApplication(sys.argv)
    TestGUI2 = QtWidgets.QMainWindow()
    ui = Ui_TestGUI2()
    ui.setupUi(TestGUI2)
    TestGUI2.show()
    sys.exit(app.exec_())

def Qcount(self):
    a=random.randrange(-100,100)
    b=random.randrange(-100,100)
    print(a,"*",b)#Этот принт вывести на lineEdit1
    d=int(input())
    if d==a*b:
        print("Все верно")

应该使用什么方法来打印输出？

这部分在Ui_TestGUI2_3.py中（由Qt Designer创建）

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_TestGUI2(object):
    def setupUi(self, TestGUI2):
        TestGUI2.setObjectName("TestGUI2")
        TestGUI2.resize(387, 315)
        self.centralwidget = QtWidgets.QWidget(TestGUI2)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(110, 130, 158, 23))
        self.pushButton.setObjectName("pushButton")
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit.setGeometry(QtCore.QRect(110, 30, 161, 41))
        self.lineEdit.setObjectName("lineEdit")
        self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit_2.setGeometry(QtCore.QRect(110, 80, 161, 41))
        self.lineEdit_2.setObjectName("lineEdit_2")
        TestGUI2.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(TestGUI2)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 387, 21))
        self.menubar.setObjectName("menubar")
        TestGUI2.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(TestGUI2)
        self.statusbar.setObjectName("statusbar")
        TestGUI2.setStatusBar(self.statusbar)

        self.retranslateUi(TestGUI2)
        QtCore.QMetaObject.connectSlotsByName(TestGUI2)

    def retranslateUi(self, TestGUI2):
        _translate = QtCore.QCoreApplication.translate
        TestGUI2.setWindowTitle(_translate("TestGUI2", "TestGUI2"))
        self.pushButton.setText(_translate("TestGUI2", "PushButton"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    TestGUI2 = QtWidgets.QMainWindow()
    ui = Ui_TestGUI2()
    ui.setupUi(TestGUI2)
    TestGUI2.show()
    sys.exit(app.exec_())

1 个回答

Voted

S. Nick · Answer 1 · 2022-07-24T22:31:13+08:00

文本：QString

此属性包含行编辑文本。

设置此属性会清除选择，清除撤消/重做历史，将光标移动到行尾，并将修改后的属性重置为 false。使用setText ()粘贴文本时不验证文本。

self.lineEdit.setText(f'{self.a} *  {self.b} = ?')

import sys
import random
from PyQt5 import QtCore, QtGui, QtWidgets

#from Ui_TestGUI2_3 import Ui_TestGUI2
class Ui_TestGUI2(object):
    def setupUi(self, TestGUI2):
        TestGUI2.setObjectName("TestGUI2")
        TestGUI2.resize(387, 315)
        self.centralwidget = QtWidgets.QWidget(TestGUI2)
        self.centralwidget.setObjectName("centralwidget")
        
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(110, 130, 158, 23))
        self.pushButton.setObjectName("pushButton")
        
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit.setGeometry(QtCore.QRect(110, 30, 161, 41))
        self.lineEdit.setObjectName("lineEdit")
        
        self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit_2.setGeometry(QtCore.QRect(110, 80, 161, 41))
        self.lineEdit_2.setObjectName("lineEdit_2")
        
        TestGUI2.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(TestGUI2)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 387, 21))
        self.menubar.setObjectName("menubar")
        TestGUI2.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(TestGUI2)
        self.statusbar.setObjectName("statusbar")
        TestGUI2.setStatusBar(self.statusbar)

        self.retranslateUi(TestGUI2)
        QtCore.QMetaObject.connectSlotsByName(TestGUI2)

    def retranslateUi(self, TestGUI2):
        _translate = QtCore.QCoreApplication.translate
        TestGUI2.setWindowTitle(_translate("TestGUI2", "TestGUI2"))
        self.pushButton.setText(_translate("TestGUI2", "PushButton"))


class MainWindow(QtWidgets.QMainWindow, Ui_TestGUI2):
    def __init__(self):
        super().__init__()
        
        self.setupUi(self)
        
        self.lineEdit.setReadOnly(True)
        self.lineEdit_2.setPlaceholderText('Введите ответ здесь.')
        self.pushButton.clicked.connect(self.on_clicked)
        
        self.a = 0
        self.b = 0
        self.qcount()
        
    def qcount(self):
        self.a = random.randrange(-100, 100)
        self.b = random.randrange(-100, 100)
#        print(self.a, "*", self.b)                #  Этот принт вывести на lineEdit1
        self.lineEdit.setText(f'{self.a} *  {self.b} = ?')

    def on_clicked(self):
        d = self.lineEdit_2.text() 
        if not d:
            msg = QtWidgets.QMessageBox.information(
                self, 'Внимание', 'Вам надо ввести ответ.')
            return
        try:
            d = int(d)
        except:
            d = 9999
        
        if d == int(self.a) * int(self.b):    
            msg = QtWidgets.QMessageBox.information(
                self, 'Все верно', f'{self.a} *  {self.b} = {d}')
            self.qcount()
            self.lineEdit_2.clear()   
        else:
            msg = QtWidgets.QMessageBox.information(
                self, 'Error', f'{self.a} *  {self.b} != {self.lineEdit_2.text()} \n попробуйте еще раз.')
            self.lineEdit_2.clear()  
        self.lineEdit_2.setFocus()             
        

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())

更新：

但是如何将其拆分为 2 个文件，以便您可以编辑设计并添加功能？

主文件

import sys
import random
from PyQt5 import QtCore, QtGui, QtWidgets
from Ui_TestGUI2_3 import Ui_TestGUI2


class MainWindow(QtWidgets.QMainWindow, Ui_TestGUI2):
    def __init__(self):
        super().__init__()
        
        self.setupUi(self)
        
        self.lineEdit.setReadOnly(True)
        self.lineEdit_2.setPlaceholderText('Введите ответ здесь.')
        self.pushButton.clicked.connect(self.on_clicked)
        
        self.a = 0
        self.b = 0
        self.qcount()
        
    def qcount(self):
        self.a = random.randrange(-100, 100)
        self.b = random.randrange(-100, 100)
#        print(self.a, "*", self.b)                #  Этот принт вывести на lineEdit1
        self.lineEdit.setText(f'{self.a} *  {self.b} = ?')

    def on_clicked(self):
        d = self.lineEdit_2.text() 
        if not d:
            msg = QtWidgets.QMessageBox.information(
                self, 'Внимание', 'Вам надо ввести ответ.')
            return
        try:
            d = int(d)
        except:
            d = 9999
        
        if d == int(self.a) * int(self.b):    
            msg = QtWidgets.QMessageBox.information(
                self, 'Все верно', f'{self.a} *  {self.b} = {d}')
            self.qcount()
            self.lineEdit_2.clear()   
        else:
            msg = QtWidgets.QMessageBox.information(
                self, 'Error', f'{self.a} *  {self.b} != {self.lineEdit_2.text()} \n попробуйте еще раз.')
            self.lineEdit_2.clear()  
        self.lineEdit_2.setFocus()             
        

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())

ui_TestGUI2_3.py

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_TestGUI2(object):
    def setupUi(self, TestGUI2):
        TestGUI2.setObjectName("TestGUI2")
        TestGUI2.resize(387, 315)
        self.centralwidget = QtWidgets.QWidget(TestGUI2)
        self.centralwidget.setObjectName("centralwidget")
        
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(110, 130, 158, 23))
        self.pushButton.setObjectName("pushButton")
        
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit.setGeometry(QtCore.QRect(110, 30, 161, 41))
        self.lineEdit.setObjectName("lineEdit")
        
        self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit_2.setGeometry(QtCore.QRect(110, 80, 161, 41))
        self.lineEdit_2.setObjectName("lineEdit_2")
        
        TestGUI2.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(TestGUI2)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 387, 21))
        self.menubar.setObjectName("menubar")
        TestGUI2.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(TestGUI2)
        self.statusbar.setObjectName("statusbar")
        TestGUI2.setStatusBar(self.statusbar)

        self.retranslateUi(TestGUI2)
        QtCore.QMetaObject.connectSlotsByName(TestGUI2)

    def retranslateUi(self, TestGUI2):
        _translate = QtCore.QCoreApplication.translate
        TestGUI2.setWindowTitle(_translate("TestGUI2", "TestGUI2"))
        self.pushButton.setText(_translate("TestGUI2", "PushButton"))

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1 个回答

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