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Ruin
Asked:2022-12-07 03:15:01 +0000 UTC2022-12-07 03:15:01 +0000 UTC

PyQt5 中的按钮问题

  • 772

大家好，这里是代码

from PyQt5 import QtCore, QtGui, QtWidgets
import openpyxl
from random import randint
from PyQt5.QtWidgets import QMessageBox
import os

question_list = []


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(1223, 578)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.verticalLayout = QtWidgets.QVBoxLayout(self.centralwidget)
        self.verticalLayout.setObjectName("verticalLayout")
        self.QuestionField = QtWidgets.QTextBrowser(self.centralwidget)
        self.QuestionField.setObjectName("QuestionField")
        self.verticalLayout.addWidget(self.QuestionField)
        self.EntryField = QtWidgets.QPlainTextEdit(self.centralwidget)
        self.EntryField.setObjectName("EntryField")
        self.verticalLayout.addWidget(self.EntryField)
        self.ButtonNext = QtWidgets.QPushButton(self.centralwidget)
        self.ButtonNext.setObjectName("ButtonNext")
        self.verticalLayout.addWidget(self.ButtonNext)
        MainWindow.setCentralWidget(self.centralwidget)

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

        self.start_quiz()

    def clicked_next(self):
        self.ButtonNext.clicked.connect(self.get_next_question)

    def get_next_question(self):
        self.clicked_next()
        wb_obj = openpyxl.load_workbook("questions.xlsx")
        if len(question_list) < 3:
            wb_sheet = wb_obj['Block_1']
        elif len(question_list) == 3:
            wb_sheet = wb_obj['Block_2']
        elif len(question_list) == 4:
            wb_sheet = wb_obj['Block_3']
        else:
            sys.exit(app.exec_())

        rows = wb_sheet.max_row
        nums_wb = randint(2, rows)
        question = wb_sheet[f'A{nums_wb}'].value
        print(question)
        print(len(question_list))
        self.QuestionField.setText(question)
        question_list.append(question)

    def start_quiz(self):
        greetings = QMessageBox()
        btn_begin = QtWidgets.QPushButton()
        greetings.setWindowTitle('Приветствие')
        greetings.setText(
            f'Приветствую тебя {os.getlogin()}. Предлогаю в начале рабочего дня пройти тебе тест на знание наших цен и предложений')
        greetings.setIcon(QMessageBox.Information)
        greetings.exec_()
        self.get_next_question()

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "Опросник"))
        self.ButtonNext.setText(_translate("MainWindow", "Далее"))


if __name__ == "__main__":
    import sys

    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

当您单击按钮时далее，出于某种原因它дважды会给出一个值，而不是一次。
意思是一开始播放来自该函数的欢迎消息start_quiz，然后轮询函数开始get_next_question，在用户输入他的答案并单击按钮后，clicked_next应该再次调用该函数get_next_question等等，直到列表长度更大比4。

但是当我点击按钮时далее，更改问题的功能立即开始给出2值。
我不知道去哪里看

python

1 个回答

  1. Best Answer

    您没有提供可重现的示例。没有questions.xlsx文件，就无法测试您的应用程序。

    给你的一些建议：

    • 永远不要更改 Qt Designer 生成的代码。
      创建另一个继承自相应小部件的类，并使用生成的类来填充它。

    • 字符串self.ButtonNext.clicked.connect(self.get_next_question)在错误的位置作为字符串self.wb_obj = openpyxl.load_workbook("questions.xlsx")

    • 最后，关于您的代码的一些虚拟想法，请参见下面的验证。

    import os
import openpyxl
from random import randint
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QMessageBox


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(1223, 578)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        
        self.verticalLayout = QtWidgets.QVBoxLayout(self.centralwidget)
        self.verticalLayout.setObjectName("verticalLayout")
        self.QuestionField = QtWidgets.QTextBrowser(self.centralwidget)
        self.QuestionField.setObjectName("QuestionField")
        self.verticalLayout.addWidget(self.QuestionField)
        self.EntryField = QtWidgets.QPlainTextEdit(self.centralwidget)
        self.EntryField.setObjectName("EntryField")
        self.verticalLayout.addWidget(self.EntryField)
        self.ButtonNext = QtWidgets.QPushButton(self.centralwidget)
        self.ButtonNext.setObjectName("ButtonNext")
        self.verticalLayout.addWidget(self.ButtonNext)
        
        MainWindow.setCentralWidget(self.centralwidget)
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "Опросник"))
        self.ButtonNext.setText(_translate("MainWindow", "Далее"))


class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self):
        super().__init__()
        self.setupUi(self)
        
        self.question_list = []                                           # +++
        self.wb_obj = openpyxl.load_workbook("questions.xlsx")            # +++
        
        self.ButtonNext.clicked.connect(self.get_next_question)           # !!! +++
        
        self.start_quiz()
        self.get_next_question() 

#    def clicked_next(self):
#        self.ButtonNext.clicked.connect(self.get_next_question)

    def get_next_question(self):
#        self.clicked_next()
#        wb_obj = openpyxl.load_workbook("questions.xlsx")
        
        if len(self.question_list) < 3:
            wb_sheet = self.wb_obj['Block_1']
        elif len(self.question_list) == 3:
            wb_sheet = self.wb_obj['Block_2']
        elif len(self.question_list) == 4:
            wb_sheet = self.wb_obj['Block_3']
        else:
#            sys.exit(app.exec_())
            self.close()

        rows = wb_sheet.max_row
        nums_wb = randint(2, rows)
        question = wb_sheet[f'A{nums_wb}'].value
        print(question)
        print(len(self.question_list))
        self.QuestionField.setText(question)
        self.question_list.append(question)

    def start_quiz(self):
        greetings = QMessageBox()
        btn_begin = QtWidgets.QPushButton()
        greetings.setWindowTitle('Приветствие')
        greetings.setText(
            f'Приветствую тебя {os.getlogin()}. Предлогаю в начале рабочего дня пройти тебе тест на знание наших цен и предложений')
        greetings.setIcon(QMessageBox.Information)
        greetings.exec_()
        
#        self.get_next_question()        


if __name__ == "__main__":
    import sys

    app = QtWidgets.QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())
    • 1

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