PyQt4 | PyQt4 module for Maya on Windows and Mac | Animation library

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kandi X-RAY | PyQt4 Summary

PyQt4 is a Python library typically used in User Interface, Animation applications. PyQt4 has no bugs, it has no vulnerabilities, it has build file available and it has low support. You can download it from GitHub.

PyQt4 for Maya 2012 - 2016 =.

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PyQt4 saves you 9381 person hours of effort in developing the same functionality from scratch.

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want to filter rows on the basis of comboBoxes and search bar also I want to make checkboxes multiselect with select deselect all and search in pyQt5

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QUESTION

want to filter rows on the basis of comboBoxes and search bar also I want to make checkboxes multiselect with select deselect all and search in pyQt5

Asked 2021-May-19 at 08:44

Here, I have one tableView, Upload Button ,two ComboBoxes which will be filled automatically when user upload a csv file also there is a search bar (QLineEdit_2) , I want to filter rows on the basis of two checkBoxes and search bar (QLineEdit_2), also I want to make comboBoxes multiselect with select all and deselect all with Search functionality altogether.

...

ANSWER

Answered 2021-May-19 at 08:44

import pandas as pd
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QFileDialog
from PyQt5.QtCore import Qt
import sys

########################################### PandasModel to display it on tableView #####################

class PandasModel(QtCore.QAbstractTableModel):
    def __init__(self, df=pd.DataFrame(), parent=None):
        QtCore.QAbstractTableModel.__init__(self, parent=parent)
        self._df = df.copy()

    def toDataFrame(self):
        return self._df.copy()

    def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):
        if role != QtCore.Qt.DisplayRole:
            return QtCore.QVariant()

        if orientation == QtCore.Qt.Horizontal:
            try:
                return self._df.columns.tolist()[section]
            except (IndexError, ):
                return QtCore.QVariant()
        elif orientation == QtCore.Qt.Vertical:
            try:
                # return self.df.index.tolist()
                return self._df.index.tolist()[section]
            except (IndexError, ):
                return QtCore.QVariant()

    def data(self, index, role=QtCore.Qt.DisplayRole):
        if role != QtCore.Qt.DisplayRole:
            return QtCore.QVariant()

        if not index.isValid():
            return QtCore.QVariant()

        return QtCore.QVariant(str(self._df.iloc[index.row(), index.column()]))

    def setData(self, index, value, role):
        row = self._df.index[index.row()]
        col = self._df.columns[index.column()]
        if hasattr(value, 'toPyObject'):
            # PyQt4 gets a QVariant
            value = value.toPyObject()
        else:
            # PySide gets an unicode
            dtype = self._df[col].dtype
            if dtype != object:
                value = None if value == '' else dtype.type(value)
        self._df.set_value(row, col, value)
        return True

    def rowCount(self, parent=QtCore.QModelIndex()):
        return len(self._df.index)

    def columnCount(self, parent=QtCore.QModelIndex()):
        return len(self._df.columns)

    def sort(self, column, order):
        colname = self._df.columns.tolist()[column]
        self.layoutAboutToBeChanged.emit()
        self._df.sort_values(colname, ascending=order ==
                             QtCore.Qt.AscendingOrder, inplace=True)
        self._df.reset_index(inplace=True, drop=True)
        self.layoutChanged.emit()


################################################ Main UI ###############################################

class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(1678, 977)
        self.verticalLayoutWidget = QtWidgets.QWidget(Dialog)
        self.verticalLayoutWidget.setGeometry(QtCore.QRect(10, 230, 201, 40))
        self.verticalLayoutWidget.setObjectName("verticalLayoutWidget")
        self.verticalLayout = QtWidgets.QVBoxLayout(self.verticalLayoutWidget)
        self.verticalLayout.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout.setObjectName("verticalLayout")
        
        # Upload Button Signal
        self.pushButton = QtWidgets.QPushButton(self.verticalLayoutWidget)
        self.pushButton.clicked.connect(self.upload)
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton.setFont(font)
        self.pushButton.setObjectName("pushButton")
        self.verticalLayout.addWidget(self.pushButton)
        self.verticalLayoutWidget_2 = QtWidgets.QWidget(Dialog)
        self.verticalLayoutWidget_2.setGeometry(QtCore.QRect(220, 20, 1441, 40))
        self.verticalLayoutWidget_2.setObjectName("verticalLayoutWidget_2")
        self.verticalLayout_2 = QtWidgets.QVBoxLayout(self.verticalLayoutWidget_2)
        self.verticalLayout_2.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout_2.setObjectName("verticalLayout_2")
        self.lineEdit = QtWidgets.QLineEdit(self.verticalLayoutWidget_2)
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.lineEdit.setFont(font)
        self.lineEdit.setObjectName("lineEdit")
        self.verticalLayout_2.addWidget(self.lineEdit)
        self.verticalLayoutWidget_3 = QtWidgets.QWidget(Dialog)
        self.verticalLayoutWidget_3.setGeometry(QtCore.QRect(220, 60, 1441, 40))
        self.verticalLayoutWidget_3.setObjectName("verticalLayoutWidget_3")
        self.verticalLayout_3 = QtWidgets.QVBoxLayout(self.verticalLayoutWidget_3)
        self.verticalLayout_3.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout_3.setObjectName("verticalLayout_3")
        self.lineEdit_2 = QtWidgets.QLineEdit(self.verticalLayoutWidget_3)
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.lineEdit_2.setFont(font)
        self.lineEdit_2.setObjectName("lineEdit_2")
        self.verticalLayout_3.addWidget(self.lineEdit_2)
        self.gridLayoutWidget = QtWidgets.QWidget(Dialog)
        self.gridLayoutWidget.setGeometry(QtCore.QRect(220, 100, 1441, 861))
        self.gridLayoutWidget.setObjectName("gridLayoutWidget")
        self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget)
        self.gridLayout.setContentsMargins(0, 0, 0, 0)
        self.gridLayout.setObjectName("gridLayout")
        self.tableView = QtWidgets.QTableView(self.gridLayoutWidget)
        font = QtGui.QFont()
        font.setFamily("MS Shell Dlg 2")
        font.setPointSize(10)
        font.setBold(True)
        font.setWeight(75)
        self.tableView.setFont(font)
        self.tableView.setObjectName("tableView")
        self.gridLayout.addWidget(self.tableView, 0, 0, 1, 1)
        self.verticalLayoutWidget_4 = QtWidgets.QWidget(Dialog)
        self.verticalLayoutWidget_4.setGeometry(QtCore.QRect(10, 270, 201, 40))
        self.verticalLayoutWidget_4.setObjectName("verticalLayoutWidget_4")
        self.verticalLayout_4 = QtWidgets.QVBoxLayout(self.verticalLayoutWidget_4)
        self.verticalLayout_4.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout_4.setObjectName("verticalLayout_4")
        
        # Validate Button Signal
        self.pushButton_2 = QtWidgets.QPushButton(self.verticalLayoutWidget_4)
        self.pushButton_2.clicked.connect(self.validate)
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_2.setFont(font)
        self.pushButton_2.setObjectName("pushButton_2")
        self.verticalLayout_4.addWidget(self.pushButton_2)
        self.verticalLayoutWidget_5 = QtWidgets.QWidget(Dialog)
        self.verticalLayoutWidget_5.setGeometry(QtCore.QRect(10, 710, 201, 41))
        self.verticalLayoutWidget_5.setObjectName("verticalLayoutWidget_5")
        self.verticalLayout_5 = QtWidgets.QVBoxLayout(self.verticalLayoutWidget_5)
        self.verticalLayout_5.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout_5.setObjectName("verticalLayout_5")
        
        # Export Button Signal
        self.pushButton_3 = QtWidgets.QPushButton(self.verticalLayoutWidget_5)
        self.pushButton_3.clicked.connect(self.exportCSV)
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_3.setFont(font)
        self.pushButton_3.setObjectName("pushButton_3")
        self.verticalLayout_5.addWidget(self.pushButton_3)
        self.verticalLayoutWidget_6 = QtWidgets.QWidget(Dialog)
        self.verticalLayoutWidget_6.setGeometry(QtCore.QRect(10, 770, 201, 41))
        self.verticalLayoutWidget_6.setObjectName("verticalLayoutWidget_6")
        self.verticalLayout_6 = QtWidgets.QVBoxLayout(self.verticalLayoutWidget_6)
        self.verticalLayout_6.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout_6.setObjectName("verticalLayout_6")
        
        # Reset Button Signal
        self.pushButton_4 = QtWidgets.QPushButton(self.verticalLayoutWidget_6)
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_4.setFont(font)
        self.pushButton_4.setObjectName("pushButton_4")
        self.verticalLayout_6.addWidget(self.pushButton_4)
        self.gridLayoutWidget_4 = QtWidgets.QWidget(Dialog)
        self.gridLayoutWidget_4.setGeometry(QtCore.QRect(60, 20, 117, 144))
        self.gridLayoutWidget_4.setObjectName("gridLayoutWidget_4")
        self.gridLayout_2 = QtWidgets.QGridLayout(self.gridLayoutWidget_4)
        self.gridLayout_2.setContentsMargins(0, 0, 0, 0)
        self.gridLayout_2.setObjectName("gridLayout_2")
        self.label_3 = QtWidgets.QLabel(self.gridLayoutWidget_4)
        self.label_3.setText("")
        self.label_3.setPixmap(QtGui.QPixmap("../../../../Pictures/74067_web (2).jpg"))
        self.label_3.setObjectName("label_3")
        self.gridLayout_2.addWidget(self.label_3, 0, 0, 1, 1)
        
        # Select State Signal
        self.pushButton_5 = QtWidgets.QPushButton(Dialog)
        self.pushButton_5.clicked.connect(self.onSelectState)
        self.pushButton_5.setGeometry(QtCore.QRect(10, 330, 201, 33))
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_5.setFont(font)
        self.pushButton_5.setObjectName("pushButton_5")
        
        # Select District Signal
        self.pushButton_6 = QtWidgets.QPushButton(Dialog)
        self.pushButton_6.clicked.connect(self.onSelectDistrict)
        self.pushButton_6.setGeometry(QtCore.QRect(10, 380, 201, 33))
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_6.setFont(font)
        self.pushButton_6.setObjectName("pushButton_6")
        
        # Select Facility Type Signal
        self.pushButton_7 = QtWidgets.QPushButton(Dialog)
        self.pushButton_7.clicked.connect(self.onSelectFacilitytype)
        self.pushButton_7.setGeometry(QtCore.QRect(0, 430, 211, 33))
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_7.setFont(font)
        self.pushButton_7.setObjectName("pushButton_7")
        
        # Select Facility Name Signal
        self.pushButton_8 = QtWidgets.QPushButton(Dialog)
        self.pushButton_8.clicked.connect(self.onSelectFacilityName)
        self.pushButton_8.setGeometry(QtCore.QRect(0, 480, 211, 33))
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_8.setFont(font)
        self.pushButton_8.setObjectName("pushButton_8")
        
        #Select Month Signal
        self.pushButton_9 = QtWidgets.QPushButton(Dialog)
        self.pushButton_9.setGeometry(QtCore.QRect(0, 530, 211, 33))
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_9.setFont(font)
        self.pushButton_9.setObjectName("pushButton_9")
        
        #Select Year Signal
        self.pushButton_10 = QtWidgets.QPushButton(Dialog)
        self.pushButton_10.setGeometry(QtCore.QRect(0, 580, 211, 33))
        font = QtGui.QFont()
        font.setFamily("Waree")
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_10.setFont(font)
        self.pushButton_10.setObjectName("pushButton_10")

        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", "Upload"))
        self.lineEdit_2.setPlaceholderText(_translate("Dialog", "Search..."))
        self.pushButton_2.setText(_translate("Dialog", "Validate"))
        self.pushButton_3.setText(_translate("Dialog", "Export"))
        self.pushButton_4.setText(_translate("Dialog", "Reset"))
        self.pushButton_5.setText(_translate("Dialog", "Select State"))
        self.pushButton_6.setText(_translate("Dialog", "Select District"))
        self.pushButton_7.setText(_translate("Dialog", "Select Facility Type"))
        self.pushButton_8.setText(_translate("Dialog", "Select Facility Name"))
        self.pushButton_9.setText(_translate("Dialog", "Select Month"))
        self.pushButton_10.setText(_translate("Dialog", "Select Year"))

    # To upload file
    def upload(self):
        global df_, df_OrgHeaders
        products = {'Date': [2,3,1,5,3,9],
                    'Month': ['April', 'May', 'April', 'June', 'May', 'July'],        
                    'Year': [2020, 2021, 2019, 2020, 2020, 2020],
                    'State': ['BR', 'JH', 'HR', 'JH', 'BR', 'PB'],
                    'Blank': ['nan','nan','nan','nan','nan','nan'],
                    'District' : ['BS', 'GW', 'AM', 'RN', 'PB', 'GR'],
                    'Facility Type': ['HSC', 'DH', 'HSC', 'CHC', 'HSC', 'DH'],
                    'Facility Name': ['PP CAC', 'SC Bkr', 'SC Bara', 'SC Bkr', 'PP CAC', 'PP CAC'],
                    '4.3': [1, 0, 2, 2, 9, 8],
                    '2.1.1.a': [0, 1, 1, 2, 3, 4],
                    '2.1.1.b': [1, 2, 0, 0, 0, 0],
                    '2.2': [1,2, 3, 4, 0, 0],
                    }
        df_ = pd.DataFrame(products, columns= ['Date', 'Month', 'Year', 'State', 'Blank', 'District', 'Facility Type', 'Facility Name', '4.3', '2.1.1.a', '2.1.1.b', '2.2'])

        self.tableView.setModel(PandasModel(df_))

        # grab the first row for the header
        new_header = df_.iloc[1]

        # set the header row as the df header
        df_.columns = new_header

        #df_.dropna(how='all', axis=1)
        df_.columns = ['col_' + str(index)
                       for index in range(1, len(df_.columns)+1)]
        df_OrgHeaders = df_.iloc[[0, 1]]
        #df_.drop(df_.index[[0, 1]], inplace=True)
        #df_.dropna(subset=['col_4'], how='all', inplace=True)
        return df_

    def loadFile(self, df_):
        self.pushButton.setDisabled(False)
        return df_

    # to validate modified checks
    def validate(self):
        global df, list_set
        # df = self.loadFile()
        df = self.loadFile(df_)

        print("Entering Validate")

        # 4.3 <= 2.1.1.a + 2.1.1.b + 2.2
        def res1(df):
            count = 0
            if float(df['col_9']) > float(df['col_10']) + float(df['col_11']) + float(df['col_12']):
                count = count+1
                return 'Inconsistent'
            elif pd.isnull(df['col_9']) and pd.isnull(df['col_10']) and pd.isnull(df['col_11']) and pd.isnull(df['col_12']):
                return 'Blank'
            elif pd.isnull(df['col_9']) or pd.isnull(df['col_10']) or pd.isnull(df['col_11']) or pd.isnull(df['col_12']):
                return 'Blank Error'
            else:
                return 'Consistent'
        
        df['4.3 <= 2.1.1.a + 2.1.1.b + 2.2'] = df.apply(res1, axis=1)
        
        df = pd.concat([df_, df['4.3 <= 2.1.1.a + 2.1.1.b + 2.2']], axis=1)

        df.astype(str)
        # Select State #
        # convert the set to the list
        list_set = df_['col_4'].tolist()
        unique_list = set(list_set)
        return df

    ################################################################################
    # Select State

    # Select State Functionality
    def onSelectState(self, index):
        self.keywords = dict([(i, []) for i in range(df.shape[0])])
        print(self.keywords)
        self.menu = QtWidgets.QMenu(Dialog)
        self.menu.setStyleSheet('QMenu { menu-scrollable: true; width: 400 }')
        font = self.menu.font()
        font.setPointSize(9)
        font.setBold(True)
        font.setWeight(75)
        self.menu.setFont(font) 
        
        index = 4
        self.col = index

        data_unique = []

        self.checkBoxs = []
        
        # Selectall added into Dropdown
        checkBox = QtWidgets.QCheckBox("Select all", self.menu)

        # All the checkboxes are enabled to check
        checkableAction = QtWidgets.QWidgetAction(self.menu)
        checkableAction.setDefaultWidget(checkBox)
        self.menu.addAction(checkableAction)
        checkBox.setChecked(True)
        checkBox.stateChanged.connect(self.slotSelect)

        # list storing state data
        item = list_set
        
        # looping to fill checkboxes, initially all checkboxes will be checked
        for i in range(len(df)):
            if item[i] not in data_unique:
                data_unique.append(item[i])
                checkBox = QtWidgets.QCheckBox(item[i], self.menu)
                checkBox.setChecked(True)
                checkableAction = QtWidgets.QWidgetAction(self.menu)
                checkableAction.setDefaultWidget(checkBox)
                self.menu.addAction(checkableAction)
                self.checkBoxs.append(checkBox)

        # Ok, cancel button
        btn = QtWidgets.QDialogButtonBox(QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel,
                                     QtCore.Qt.Horizontal, self.menu)

        # ok selected                             
        btn.accepted.connect(self.menuClose)
        # rejected , nothing selected
        btn.rejected.connect(self.menu.close)

        checkableAction = QtWidgets.QWidgetAction(self.menu)
        checkableAction.setDefaultWidget(btn)
        self.menu.addAction(checkableAction)
        self.pushButton_5.setMenu(self.menu)

    # method to check -> uncheck and vice versa
    def slotSelect(self, state):
        for checkbox in self.checkBoxs:
            checkbox.setChecked(QtCore.Qt.Checked == state)

    # after ok selected 
    def menuClose(self):
        self.keywords[self.col] = []
        for element in self.checkBoxs:
            if element.isChecked():
                self.keywords[self.col].append(element.text())
        self.filterdata()
        self.menu.close()

    # Filter data columnwise
    def filterdata(self):
        global final_df
        #keywords = dict([(i, []) for i in range(self.filterall.columnCount())])
        columnsShow = dict([(i, True) for i in range(df.shape[0])])

        # for i in range(df.shape[0]): 
        j=0 
        for j in range(df.shape[0]):
            item = list_set
            
            print(self.keywords[self.col])
            #if self.keywords[self.col]:
            if item[j] not in self.keywords[self.col]:
                columnsShow[j] = False     

        # for key, value in columnsShow.items():
        final_lst = [i for i in columnsShow.values()] 
        print(final_lst, 'this is final list of Select State')
        final_df = df[final_lst]
        print(final_df)
        self.tableView.setModel(PandasModel(final_df))
        return final_df

    
    ################################################################################
    # Select District

        # Select District Functionality
    def onSelectDistrict(self, index):
        self.keywords = dict([(i, []) for i in range(final_df.shape[0])])
        print(self.keywords)
        self.menu = QtWidgets.QMenu(Dialog)
        self.menu.setStyleSheet('QMenu { menu-scrollable: true; width: 400 }')
        font = self.menu.font()
        font.setPointSize(9)
        font.setBold(True)
        font.setWeight(75)
        self.menu.setFont(font) 
        
        index = 6
        self.col = index

        data_unique = []

        self.checkBoxs = []
        
        # Selectall added into Dropdown
        checkBox = QtWidgets.QCheckBox("Select all", self.menu)

        # All the checkboxes are enabled to check
        checkableAction = QtWidgets.QWidgetAction(self.menu)
        checkableAction.setDefaultWidget(checkBox)
        self.menu.addAction(checkableAction)
        checkBox.setChecked(True)
        checkBox.stateChanged.connect(self.slotSelectDistrict)

        # list storing state data
        list_set = final_df['col_6'].to_list()

        item = list_set
        
        # looping to fill checkboxes, initially all checkboxes will be checked
        for i in range(len(item)):
            if item[i] not in data_unique:
                data_unique.append(item[i])
                checkBox = QtWidgets.QCheckBox(item[i], self.menu)
                checkBox.setChecked(True)
                checkableAction = QtWidgets.QWidgetAction(self.menu)
                checkableAction.setDefaultWidget(checkBox)
                self.menu.addAction(checkableAction)
                self.checkBoxs.append(checkBox)

        # Ok, cancel button
        btn = QtWidgets.QDialogButtonBox(QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel,
                                     QtCore.Qt.Horizontal, self.menu)

        # ok selected                             
        btn.accepted.connect(self.menuCloseDistrict)
        # rejected , nothing selected
        btn.rejected.connect(self.menu.close)

        checkableAction = QtWidgets.QWidgetAction(self.menu)
        checkableAction.setDefaultWidget(btn)
        self.menu.addAction(checkableAction)
        self.pushButton_6.setMenu(self.menu)

    # method to check -> uncheck and vice versa
    def slotSelectDistrict(self, state):
        for checkbox in self.checkBoxs:
            checkbox.setChecked(QtCore.Qt.Checked == state)

    # after ok selected 
    def menuCloseDistrict(self):
        self.keywords[self.col] = []
        for element in self.checkBoxs:
            if element.isChecked():
                self.keywords[self.col].append(element.text())
        print(self.keywords[self.col])
        self.filterdataDistrict()
        self.menu.close()

    # Filter data columnwise
    def filterdataDistrict(self):
        global final_df_District
        #keywords = dict([(i, []) for i in range(self.filterall.columnCount())])
        columnsShow = dict([(i, True) for i in range(final_df['col_6'].shape[0])])
        print(columnsShow)

        j=0 
        for j in range(final_df['col_6'].shape[0]):
            item = final_df['col_6'].to_list()
            
            #if self.keywords[self.col]:
            if item[j] not in self.keywords[self.col]:
                columnsShow[j] = False     

        # for key, value in columnsShow.items():
        final_lst = [i for i in columnsShow.values()] 
        print(final_lst, 'this is final list of Select District')
        final_df_District = final_df[final_lst]
        print(final_df_District)
        self.tableView.setModel(PandasModel(final_df_District))
        return final_df_District


    
################################# Main Function ##################################

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_())

Source https://stackoverflow.com/questions/67224959

QUESTION

Convert from PyQt5 to PyQt4

Asked 2021-Apr-18 at 12:35

Hey brothers and sisters, I just wondered if anyone could help me convert this program to PyQt4. I did my best however I couldn't ;,). It is a basic program for displaying Real Time text on the UI.

Here is the program:

...

ANSWER

Answered 2021-Apr-18 at 12:35

I am not an expert in PyQt however I use it to develop a telemetry for Cars, Robots, Small Aircraft. Thanks to eyllanesc its solved now and working well. The problem was that PyQt4 uses QtGui instead of QtWidgets in PyQt5

Here is the sample code:

Source https://stackoverflow.com/questions/67144422

QUESTION

cx_Freeze executable runs multiple tasks when using multiprocessing and freeze_support

Asked 2021-Apr-07 at 18:31

I build an executable with cx_Freeze. I always read that I need to include multiprocessing.freeze_support to avoid multiple tasks of the executable running in the task manager. But if I use multiprocessing and freeze_support I still get two tasks running in the task manager.

Here is my example GUI named test_wibu.py:

...

ANSWER

Answered 2021-Apr-07 at 12:07

According to this excellent answer, the reason for the multiprocessing.freeze_support() call is

lack of fork() on Windows (which is not entirely true). Because of this, on Windows the fork is simulated by creating a new process in which code, which on Linux is being run in child process, is being run.

and thus not to avoid multiple tasks of the executable running in the task manager as stated in your premise.

Therefore, the behavior you observe in the task manager is probably normal and can't be avoided.

Source https://stackoverflow.com/questions/66890197

QUESTION

display two color font on QToolButton

Asked 2021-Mar-30 at 23:40

I want a button that shows a text with two colors. I've tried the following:

...

ANSWER

Answered 2021-Mar-30 at 23:30

The QPainter methods are not executed immediately since for efficiency reasons what these methods do is accumulate instructions. And that's what happens in your case since the QPainter is still active and has the property of the QPixmap, that's why you get that error, so in this case the solution is to invoke the end() method:

Source https://stackoverflow.com/questions/66879531

QUESTION

PyQt4 - QLineEdit() and QCheckbox()

Asked 2021-Feb-26 at 18:01

I am building a GUI for obtaining user inputs and then using them in some complex step later. I have a group of checkboxes from which the user has to choose at least one and also provide an 'alias' name for it in the QLineEdit right below the checkbox (default name is taken otherwise).

Currently, I have to first enter the alias name and then check the checkbox to register the entered name in the line edit to get the value entered by the user and connected checkbox name. This order is not normal. Is there a way to get the Editline data and the connected checkbox name when 'Continue' is clicked?

Here is my code:

...

ANSWER

Answered 2021-Feb-26 at 18:01

The simplest solution is to create a method that analyzes the information and that returns a dictionary of the selected elements:

Source https://stackoverflow.com/questions/66390433

QUESTION

Not able to install PyQt4 on a macOS Catalina

Asked 2021-Feb-24 at 07:30

I am not able to install PyQt4 on a macOS Catalina. I have tried the following:

...

ANSWER

Answered 2021-Feb-23 at 22:52

apt-get is a package manager for certain Linux distros.

PyQT4 is no longer supported, try installing PyQT5 with this command: pip install PyQt5.

Source https://stackoverflow.com/questions/66339717

QUESTION

Padding issue while drawing points over QGraphicsScene

Asked 2021-Feb-11 at 14:37

I have a PyQt application where I have drawn points using QPainter over a QGraphicsScene and made a drag n drop sort of a thing.

Now, there is one issue which I'm facing and that is I'm unable to drag those points at the extreme corner and edges of QGraphicsScene. It always seems as if some amount of padding or space is left.

How do I get round this problem?

Code:

...

ANSWER

Answered 2021-Feb-10 at 18:21

The simplest solution would be to add lay.setContentsMargins(0, 0, 0, 0) for the layout of the graphics view:

Source https://stackoverflow.com/questions/66142210

QUESTION

Prevent QPainter point from going outside the window scope

Asked 2021-Feb-10 at 17:28

I have a PyQt application in which I have to implement a drap n drop functionality of points made via QPainter. My problem is that I'm even able to drag those points outside the window scope e.g. I can drag the point to the title bar or taskbar and leave it there and once left there, I can no longer drag them back to my Mainwindow.

Please provide a solution so that I can never ever drag them there.

Code:

...

ANSWER

Answered 2021-Feb-10 at 17:14

This has nothing to do with the painting (which obviously cannot go "outside"), but to the way you're getting the coordinates.

Just ensure that the point is within the margins of the widget:

Source https://stackoverflow.com/questions/66141118

QUESTION

QtableView crashes as soon two validators with QStyledItemDelegate are set

Asked 2021-Feb-07 at 18:21

Based on the answer for this Question I went one step further and created two individual validators based on QStyledItemDelegate one for Integers one for Doubles.

Each one of the validators ist working perfectly if it is the only one set. As soon I try to set both validators (each in its individual column) the whole application is crashing.

...

ANSWER

Answered 2021-Feb-07 at 18:21

It seems that the problem is caused because the view does not take ownership of the delegates and then they are removed from memory as they are local variables causing a Segmentation fault. The solution is to extend its life cycle by making the class attributes:

Source https://stackoverflow.com/questions/66091468

QUESTION

can not connect to Xserver while running python file using pyQT4 via ubuntu service

Asked 2021-Jan-26 at 13:37

I am trying to execute python file which uses PyQT4

I am running below service file

...

ANSWER

Answered 2021-Jan-05 at 09:57

Commonly a service dont have the same environment than a normal user who is able to login/start the X environment. Therefore i guess DISPLAY is not set. Try this in your service file but make sure it will start after X is already running...

Source https://stackoverflow.com/questions/65574289

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