Qmessagebox, Error:参数1有一个意料之外的类型'Ui_MainWindow'

With QTDesigner in version 5, I have done a mainwindow, now i like to create a QMessagebox on click on the Button in the mainwindow.

在版本5的QTDesigner中，我已经做了一个主窗口，现在我喜欢在主窗口的按钮上创建一个QMessagebox。

I got an error : argument 1 has unexpected type 'Ui_MainWindow'

我得到一个错误参数1的类型是" Ui_MainWindow "

I have no idea why this is not working, hopefully you can help me i'm really new to programming:

我不知道为什么这个不能工作，希望你能帮助我我真的是编程新手:

The line i added:

我添加的行:

self.pushButton.clicked.connect(QtWidgets.QMessageBox.information(self, "Empty String", "Please enter day."))

to:

:

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(320, 240)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(210, 160, 75, 23))
        self.pushButton.setObjectName("pushButton")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 320, 21))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        self.pushButton.clicked.connect(QtWidgets.QMessageBox.information(self, "Empty String", "Please enter day."))
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

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


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_())

1 个解决方案

#1

The correct number of spaces (called indentation) before every line is critical in Python. Enter 8 spaces before the line that you have added.

在Python中，在每一行之前正确的空格数(称为缩进)是至关重要的。在添加的行之前输入8个空格。