使用表单1打开的Form2不能在任何按钮上单击pyqt5

Question

我有两种形式。 Main_window形式，其次是具有主要功能的gui形式。

第一个表单只有一个按钮，单击该按钮时转到第二个表单。第二种形式打开，但功能在第二种形式上不起作用。但是，当我仅以第二种形式运行时，其功能可以100％工作。我不知道原因。

第一个/欢迎使用的表单代码：

无标题的ipynb不包含gui。它只是算法的实现，该算法返回一个列表，然后以这种形式显示textEdit。

from PyQt5 import QtCore, QtGui, QtWidgets
import urllib
import speech_recognition as sr
import threading
import time
import import_ipynb
from gui import Ui_Function

class Ui_welcome(object):
    def openfunc(self):
        self.window = QtWidgets.QMainWindow()
        self.ui = Ui_Function()
        self.ui.setupUi(self.window)
        welcome.hide()
        self.window.show()
    def setupUi(self, welcome):
        welcome.setObjectName("welcome")
        welcome.resize(739, 600)
        welcome.setStyleSheet("Background-color: #696969;")
        self.centralwidget = QtWidgets.QWidget(welcome)
        self.centralwidget.setObjectName("centralwidget")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(70, 90, 601, 61))
        self.label.setStyleSheet("\n"
"font-family: Lucida Console;\n"
"font-size: 25px;\n"
"font-weight: bold;\n"
"font-style: italic;\n"
"color: #ffffff;\n"
"")
        self.label.setObjectName("label")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(240, 250, 281, 71))
        self.pushButton.setStyleSheet("QPushButton{\n"
"color: #ffffff;\n"
"background-color: #ff6347;\n"
"Border-radius: 30px;\n"
"font-size:30px\n"
"}\n"
"QPushButton:hover{\n"
"color: #ffffff;\n"
"background-color: #ff6347;\n"
"Border-radius: 30px;\n"
"background-color: #ff4500;\n"
"font-weight: bold;\n"
"}")
        self.pushButton.setObjectName("pushButton")
        self.pushButton.clicked.connect(self.openfunc)
        welcome.setCentralWidget(self.centralwidget)

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

    def retranslateUi(self, welcome):
        _translate = QtCore.QCoreApplication.translate
        welcome.setWindowTitle(_translate("welcome", "MainWindow"))
        self.label.setText(_translate("welcome", "Welcome To Book Recommendation System"))
        self.pushButton.setText(_translate("welcome", "Let\'s get started"))


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

第二个表单代码：

from PyQt5 import QtCore, QtGui, QtWidgets
import urllib
import speech_recognition as sr
import threading
import time
import import_ipynb
from Untitled12 import *

def connected(host="http://google.com"):
    try:
        urllib.request.urlopen(host)
        return True
    except:
        return False


class Ui_Function(object):
    def setupUi(self, Function):
        Function.setObjectName("Function")
        Function.resize(737, 600)
        Function.setStyleSheet("Background-color: #696969;")

        self.centralwidget = QtWidgets.QWidget(Function)
        self.centralwidget.setObjectName("centralwidget")
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit.setGeometry(QtCore.QRect(50, 70, 601, 31))
        self.lineEdit.setStyleSheet("color: #ffffff")
        self.lineEdit.setObjectName("lineEdit")

        self.lineEdit.setPlaceholderText("Enter Book Name...")
        self.label = QtWidgets.QLabel(self.centralwidget)
        #self.label.setGeometry(QtCore.QRect(50, 30, 151, 17))
        self.label.setGeometry(QtCore.QRect(50, 40, 191, 17))
        self.label.setStyleSheet("QLabel{\n"
"color: #ffffff;\n"
"font-family: Lucida Console;\n"
"font-size: 15px;\n"
"}")
        self.label.setObjectName("label")
        self.label_2 = QtWidgets.QLabel(self.centralwidget)
        self.label_2.setGeometry(QtCore.QRect(320, 120, 67, 17))
        self.label_2.setObjectName("label_2")
        self.label_2.setStyleSheet("QLabel{\n"
"color: #ffffff;\n"
"font-family: Lucida Console;\n"
"font-size: 20px;\n"
"}")
        self.label_3 = QtWidgets.QLabel(self.centralwidget)
        self.label_3.setGeometry(QtCore.QRect(50, 150, 311, 21))
        self.label_3.setObjectName("label_3")
        self.label_3.setStyleSheet("QLabel{\n"
"color: #ffffff;\n"
"font-family: Lucida Console;\n"
"font-size: 15px;\n"
"}")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(50, 180, 121, 41))
        self.pushButton.setObjectName("pushButton")
        self.pushButton.setStyleSheet("QPushButton{\n"
"color: #ffffff;\n"
"background-color: #ff6347;\n"
"Border-radius: 10px;\n"
"}\n"
"QPushButton:hover{\n"
"color: #ffffff;\n"
"background-color: #ff6347;\n"
"Border-radius: 10px;\n"
"background-color: #ff4500;\n"
"font-weight:bold;\n"
"}")


        self.textEdit = QtWidgets.QTextEdit(self.centralwidget)
        self.textEdit.setGeometry(QtCore.QRect(60, 320, 601, 231))
        self.textEdit.setObjectName("textEdit")
        self.textEdit.setStyleSheet("QTextEdit{\n"
"Background-color: #ffffff;\n"
"}")
        self.label_4 = QtWidgets.QLabel(self.centralwidget)
        self.label_4.setGeometry(QtCore.QRect(60, 290, 141, 21))
        self.label_4.setObjectName("label_4")
        self.label_4.setStyleSheet("QLabel{\n"
"color: #ffffff;\n"
"font-family: Lucida Console;\n"
"font-size: 15px;\n"
"}")
        self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_2.setGeometry(QtCore.QRect(538, 110, 111, 41))
        self.pushButton_2.setObjectName("pushButton_2")
        self.pushButton_2.setStyleSheet("QPushButton{\n"
"color: #ffffff;\n"
"background-color: #ff6347;\n"
"Border-radius: 10px;\n"
"}\n"
"QPushButton:hover{\n"
"color: #ffffff;\n"
"Background-color: #ff6347;\n"
"Border-radius: 10px;\n"
"background-color: #ff4500;\n"
"font-weight: bold;\n"
"}")


        #self.pushButton_2.clicked.connect(Untitled12.give_rec("Angel of Hope"))

        self.label_5 = QtWidgets.QLabel(self.centralwidget)
        self.label_5.setGeometry(QtCore.QRect(60, 220, 241, 21))
        self.label_5.setObjectName("label_5")
        self.label_5.setStyleSheet("QLabel{\n"
"color: #ffffff;\n"
"font-family: Lucida Console;\n"
"}")
        self.comboBox = QtWidgets.QComboBox(self.centralwidget)
        self.comboBox.setGeometry(QtCore.QRect(400, 180, 251, 31))
        self.comboBox.setStyleSheet("QcomboBox{\n"
"color: #ffffff;\n"
"Background-color: #ffffff;\n"
"font-family: Lucida Console;\n"
"}")
        self.comboBox.setObjectName("comboBox")
        self.comboBox.addItem("Your Book Name here...")
        self.comboBox.currentIndexChanged.connect(self.changeText)

        Function.setCentralWidget(self.centralwidget)

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

    def changeText(self, index):
        self.lineEdit.setText(self.comboBox.itemText(index))

    def retranslateUi(self, Function):
        _translate = QtCore.QCoreApplication.translate
        Function.setWindowTitle(_translate("Function", "MainWindow"))
        self.label.setText(_translate("Function", "Enter the Book Name:"))
        self.label_2.setText(_translate("Function", "OR"))
        self.label_3.setText(
            _translate("Function", "Write the Book Name by your Voice:")
        )
        self.pushButton.setText(_translate("Function", "Click and Say"))
        self.label_4.setText(_translate("Function", "Recommendations:"))
        self.pushButton_2.setText(_translate("Function", "Search"))
        self.label_5.setText(_translate("Function", "Suggestions..."))


class SpeechWorker(QtCore.QObject):
    messageChanged = QtCore.pyqtSignal(str)
    itemsChanged = QtCore.pyqtSignal(list)

    def speech(self):
        threading.Thread(target=self._speech, daemon=True).start()

    def _speech(self):
        if connected():
            r = sr.Recognizer()
            with sr.Microphone() as source:
                r.adjust_for_ambient_noise(source)
                self.messageChanged.emit("Listening...")
                time.sleep(1)
                # read the audio data from the default microphone
                try:
                    audio_data = r.listen(source, timeout=5)
                except sr.WaitTimeoutError as e:
                    print("Timeout; {0}".format(e))
                self.messageChanged.emit("Time over")
                time.sleep(1)
                self.messageChanged.emit("Recognizing...")
                time.sleep(1)
                # convert speech to text
                text = r.recognize_google(audio_data, language="en-UK", show_all=True)
                try:
                    self.messageChanged.emit("You said:")
                    self.itemsChanged.emit([])
                    list1 = []
                    if len(text) > 0:
                        print(len(text["alternative"]))
                        for x in range(0, len(text["alternative"])):
                            list1.append(text["alternative"][x]["transcript"])
                        self.itemsChanged.emit(list1)
                    else:
                        time.sleep(1)
                        self.messageChanged.emit("\tNothing")

                except LookupError:
                    time.sleep(1)
                    self.messageChanged.emit("Could not Understand Value")

                except sr.UnknownValueError:
                    time.sleep(1)
                    self.messageChanged.emit(
                        "Voice Recognition could not understand audio"
                    )

                except sr.RequestError as e:
                    time.sleep(1)
                    self.messageChanged.emit(
                        "Voice Recognition could not request results ; {0}".format(e)
                    )
        else:
            time.sleep(1)
            self.messageChanged.emit(
                "NO Internet Connection. \nCheck your Internet Connection"
            )
        time.sleep(1)
        self.messageChanged.emit("Completed")
        time.sleep(2)
        self.messageChanged.emit("Suggestions...")


class Function(QtWidgets.QMainWindow, Ui_Function):
    def __init__(self, parent=None):
        super(Function, self).__init__(parent)
        self.setupUi(self)

        self.worker = SpeechWorker()
        self.worker.messageChanged.connect(self.updateMessage)
        self.worker.itemsChanged.connect(self.updateItems)

        self.pushButton.clicked.connect(self.worker.speech)
        self.pushButton_2.clicked.connect(self.updateEditBox)


    @QtCore.pyqtSlot(str)
    def updateMessage(self, message):
        self.label_5.setText(message)
        self.label_5.adjustSize()

    @QtCore.pyqtSlot(list)
    def updateItems(self, items):
        self.comboBox.clear()
        self.comboBox.addItems(items)
    @QtCore.pyqtSlot()
    def updateEditBox(self):
        print(self.lineEdit.text())
        string=give_rec(self.lineEdit.text())
        self.textEdit.clear()
        self.textEdit.setText("\tRecommendations of "+self.lineEdit.text().title()+"\t")
        i=1
        for names in string:
            self.textEdit.append(str(i)+" - "+str(names))
            i=i+1
        self.comboBox.clear()
        self.lineEdit.setText("")

if __name__ == "__main__":
    import sys

    app = QtWidgets.QApplication(sys.argv)
    w = Function()
    w.show()
    app.exec_()

这是form2的功能，当我仅运行第二种形式时，该功能才起作用。

Answer 1

说明：

由Qt Designer生成的Ui_Function类仅旨在填充窗口小部件，因此您将使用它来填充“ self.window”，因此它不会具有我在Function类中实现的逻辑。

我建议您阅读this和Using the Generated Code，所以您知道，因为不建议您修改Qt Designer生成的类，而不是创建另一个从适当的小部件继承并实现必要逻辑的类。

解决方案：

from PyQt5 import QtCore, QtGui, QtWidgets

from gui import Function


class Ui_welcome(object):
    def setupUi(self, welcome):
        welcome.setObjectName("welcome")
        welcome.resize(739, 600)
        welcome.setStyleSheet("Background-color: #696969;")
        self.centralwidget = QtWidgets.QWidget(welcome)
        self.centralwidget.setObjectName("centralwidget")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(70, 90, 601, 61))
        self.label.setStyleSheet(
            "\n"
            "font-family: Lucida Console;\n"
            "font-size: 25px;\n"
            "font-weight: bold;\n"
            "font-style: italic;\n"
            "color: #ffffff;\n"
            ""
        )
        self.label.setObjectName("label")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(240, 250, 281, 71))
        self.pushButton.setStyleSheet(
            "QPushButton{\n"
            "color: #ffffff;\n"
            "background-color: #ff6347;\n"
            "Border-radius: 30px;\n"
            "font-size:30px\n"
            "}\n"
            "QPushButton:hover{\n"
            "color: #ffffff;\n"
            "background-color: #ff6347;\n"
            "Border-radius: 30px;\n"
            "background-color: #ff4500;\n"
            "font-weight: bold;\n"
            "}"
        )
        self.pushButton.setObjectName("pushButton")
        welcome.setCentralWidget(self.centralwidget)

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

    def retranslateUi(self, welcome):
        _translate = QtCore.QCoreApplication.translate
        welcome.setWindowTitle(_translate("welcome", "MainWindow"))
        self.label.setText(
            _translate("welcome", "Welcome To Book Recommendation System")
        )
        self.pushButton.setText(_translate("welcome", "Let's get started"))


class Welcome(QtWidgets.QMainWindow, Ui_welcome):
    def __init__(self, parent=None):
        super(Welcome, self).__init__(parent)
        self.setupUi(self)
        self.pushButton.clicked.connect(self.openfunc)
        self.window = Function()

    def openfunc(self):
        self.window.show()
        self.hide()


if __name__ == "__main__":
    import sys

    app = QtWidgets.QApplication(sys.argv)
    w = Welcome()
    w.show()
    sys.exit(app.exec_())