how to get checked rows QtableWidget

I have this code. I want to delete any row whose tick was active when clicked the delete button

from main import Ui_MainWindow
from PyQt5 import QtWidgets
from  PyQt5.QtCore import Qt

def set_cell_elements(rows, l):
    ui.tableWidget.setRowCount(len(rows))
    ui.tableWidget.setVerticalHeaderLabels(rows)
    ui.tableWidget.verticalHeader().setDefaultAlignment(Qt.AlignVCenter)
    ui.tableWidget.horizontalHeader().setDefaultAlignment(Qt.AlignCenter)

    for r in range(0, len(l)):
        for i in range (0, len(l[r])) :
            text = l[r][i]
            ui.tableWidget.setItem(r, i, QtWidgets.QTableWidgetItem(str(text)))
            ui.tableWidget.item(r, i).setTextAlignment(Qt.AlignCenter)
            item = ui.tableWidget.item(r, 0)
            item.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled)
            item.setCheckState(Qt.Unchecked)
            item.checkState()
            table_ = ui.tableWidget.horizontalHeader()
            table_.setSectionResizeMode(i, QtWidgets.QHeaderView.ResizeToContents)

def delete_button():
    pass

import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
#=====================
rows = ['a', 'b', 'c', 'd', 'e', 'f']
l = [['Wade', 'Wade', 'Seth', 'Ivan', 'Riley'],
        ['Gilbert', 'Jorge', 'Dan', 'Brian', 'Roberto'],
        ['Ramon', 'Liam', 'Miles', 'Nathaniel', 'Lewis'],
        ['Ethan', 'Milton', 'Joshua', 'Claude', 'Glen'],
        ['Harvey', 'Blake', 'Antonio', 'Connor', 'Julian'],
        ['Aidan', 'Harold', 'Conner', 'Peter', 'Hunter']]

set_cell_elements(rows, l)
ui.delete_button.clicked.connect(delete_button)
MainWindow.show()
sys.exit(app.exec_())

I do not have a solution to get rows whose tick is active, can you help me !? Please

Solution

Welcome to StackOverflow! There are some missing information in your question to be able to help you with your problem. I can only guess the missing part of your code.

I guess that you have used Qt Designer to create graphically your UI. I will suppose that you UI looks like that:

Image representation of the guessed UI

When compiled it gives:

main.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'Ui_MainWindow.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.


from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.verticalLayoutWidget = QtWidgets.QWidget(self.centralwidget)
        self.verticalLayoutWidget.setGeometry(QtCore.QRect(19, 16, 761, 521))
        self.verticalLayoutWidget.setObjectName("verticalLayoutWidget")
        self.verticalLayout = QtWidgets.QVBoxLayout(self.verticalLayoutWidget)
        self.verticalLayout.setSizeConstraint(QtWidgets.QLayout.SetMaximumSize)
        self.verticalLayout.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout.setObjectName("verticalLayout")
        self.delete_button = QtWidgets.QPushButton(self.verticalLayoutWidget)
        self.delete_button.setObjectName("delete_button")
        self.verticalLayout.addWidget(self.delete_button)
        self.verticalLayout_2 = QtWidgets.QVBoxLayout()
        self.verticalLayout_2.setObjectName("verticalLayout_2")
        self.tableWidget = QtWidgets.QTableWidget(self.verticalLayoutWidget)
        self.tableWidget.setBaseSize(QtCore.QSize(0, 0))
        self.tableWidget.setRowCount(6)
        self.tableWidget.setColumnCount(5)
        self.tableWidget.setObjectName("tableWidget")
        self.verticalLayout_2.addWidget(self.tableWidget)
        self.verticalLayout.addLayout(self.verticalLayout_2)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 24))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

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

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.delete_button.setText(_translate("MainWindow", "Delete selected rows"))

The minimal changes solution would be:

Solution 1.py

from main import Ui_MainWindow
from PyQt5 import QtWidgets
from  PyQt5.QtCore import Qt

def set_cell_elements(rows, l):
    ui.tableWidget.setRowCount(len(rows))
    ui.tableWidget.setVerticalHeaderLabels(rows)
    ui.tableWidget.verticalHeader().setDefaultAlignment(Qt.AlignVCenter)
    ui.tableWidget.horizontalHeader().setDefaultAlignment(Qt.AlignCenter)

    for r in range(0, len(l)):
        for i in range (0, len(l[r])) :
            text = l[r][i]
            ui.tableWidget.setItem(r, i, QtWidgets.QTableWidgetItem(str(text)))
            ui.tableWidget.item(r, i).setTextAlignment(Qt.AlignCenter)
            item = ui.tableWidget.item(r, 0)
            item.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled)
            item.setCheckState(Qt.Unchecked)
            item.checkState()
            table_ = ui.tableWidget.horizontalHeader()
            table_.setSectionResizeMode(i, QtWidgets.QHeaderView.ResizeToContents)

def delete_button():
    for r in range(ui.tableWidget.rowCount(), 0, -1):
        item = ui.tableWidget.item(r - 1, 0)
        if item.checkState() == Qt.Checked:
            ui.tableWidget.removeRow(r - 1)

import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
#=====================
rows = ['a', 'b', 'c', 'd', 'e', 'f']
l = [['Wade', 'Wade', 'Seth', 'Ivan', 'Riley'],
        ['Gilbert', 'Jorge', 'Dan', 'Brian', 'Roberto'],
        ['Ramon', 'Liam', 'Miles', 'Nathaniel', 'Lewis'],
        ['Ethan', 'Milton', 'Joshua', 'Claude', 'Glen'],
        ['Harvey', 'Blake', 'Antonio', 'Connor', 'Julian'],
        ['Aidan', 'Harold', 'Conner', 'Peter', 'Hunter']]

set_cell_elements(rows, l)
ui.delete_button.clicked.connect(delete_button)
MainWindow.show()
sys.exit(app.exec_())

But there can be some more cleanup and simplification to your code:

Solution 2.py

from main import Ui_MainWindow
from PyQt5 import QtWidgets

from PyQt5.QtCore import Qt

def set_cell_elements(row_headers, data_body):
    ui.tableWidget.setRowCount(len(row_headers))
    ui.tableWidget.setVerticalHeaderLabels(row_headers)
    ui.tableWidget.verticalHeader().setDefaultAlignment(Qt.AlignVCenter)
    ui.tableWidget.horizontalHeader().setDefaultAlignment(Qt.AlignCenter)

    for (row_number, current_row) in enumerate(data_body):
        for (column_number, current_text) in enumerate(current_row):
            ui.tableWidget.setItem(
                row_number, column_number, 
                QtWidgets.QTableWidgetItem(str(current_text))
            )
            ui.tableWidget.item(row_number, column_number).setTextAlignment(Qt.AlignCenter)
            row_header = ui.tableWidget.horizontalHeader()
            row_header.setSectionResizeMode(column_number, QtWidgets.QHeaderView.ResizeToContents)
        item = ui.tableWidget.item(row_number, 0)
        item.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled)
        item.setCheckState(Qt.Unchecked)
 
def delete_button_action():    
    for current_row in range(ui.tableWidget.rowCount() - 1, -1, -1):
        first_item = ui.tableWidget.item(current_row, 0)
        state_current_row = first_item.checkState()
        if state_current_row == Qt.Checked:
            ui.tableWidget.removeRow(current_row)
    
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)

row_headers = ('a', 'b', 'c', 'd', 'e', 'f')
data_body = (
    ('Wade', 'Wade', 'Seth', 'Ivan', 'Riley'),
    ('Gilbert', 'Jorge', 'Dan', 'Brian', 'Roberto'),
    ('Ethan', 'Milton', 'Joshua', 'Claude', 'Glen'),
    ('Ramon', 'Liam', 'Miles', 'Nathaniel', 'Lewis'),
    ('Harvey', 'Blake', 'Antonio', 'Connor', 'Julian'),
    ('Aidan', 'Harold', 'Conner', 'Peter', 'Hunter')
)

set_cell_elements(row_headers, data_body)
ui.delete_button.clicked.connect(delete_button_action)
MainWindow.show()
sys.exit(app.exec_())

But you could code this in a more object-oriented way. That way, as long as you provide the containing widget and its initial data, you can plug it anywhere in your UI and it will take of itself:

Solution 3.py

import sys
from main import Ui_MainWindow
from PyQt5 import QtWidgets

from PyQt5.QtCore import Qt

class Simple_table_editor(Ui_MainWindow):

    def __init__(self, parent, row_headers, initial_data):
        super().__init__()
        self.setupUi(parent)
        self.tableWidget.setRowCount(len(row_headers))
        self.tableWidget.setVerticalHeaderLabels(row_headers)
        self.tableWidget.verticalHeader().setDefaultAlignment(Qt.AlignVCenter)
        self.tableWidget.horizontalHeader().setDefaultAlignment(Qt.AlignCenter)

        for (row_number, current_row) in enumerate(initial_data):
            for (column_number, current_text) in enumerate(current_row):
                self.tableWidget.setItem(
                    row_number, column_number, 
                    QtWidgets.QTableWidgetItem(str(current_text))
                )
                self.tableWidget.item(row_number, column_number).setTextAlignment(Qt.AlignCenter)
                row_header = self.tableWidget.horizontalHeader()
                row_header.setSectionResizeMode(column_number, QtWidgets.QHeaderView.ResizeToContents)
            item = self.tableWidget.item(row_number, 0)
            item.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled)
            item.setCheckState(Qt.Unchecked)
        
        self.delete_button.clicked.connect(self.delete_button_action)

    def delete_button_action(self):    
        for current_row in range(self.tableWidget.rowCount() - 1, -1, -1):
            first_item = self.tableWidget.item(current_row, 0)
            state_current_row = first_item.checkState()
            if state_current_row == Qt.Checked:
                self.tableWidget.removeRow(current_row)

row_headers = ('a', 'b', 'c', 'd', 'e', 'f')
data_body = (
    ('Wade', 'Wade', 'Seth', 'Ivan', 'Riley'),
    ('Gilbert', 'Jorge', 'Dan', 'Brian', 'Roberto'),
    ('Ethan', 'Milton', 'Joshua', 'Claude', 'Glen'),
    ('Ramon', 'Liam', 'Miles', 'Nathaniel', 'Lewis'),
    ('Harvey', 'Blake', 'Antonio', 'Connor', 'Julian'),
    ('Aidan', 'Harold', 'Conner', 'Peter', 'Hunter')
)

app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
table_editor = Simple_table_editor(MainWindow, row_headers, data_body)
MainWindow.show()
sys.exit(app.exec_())

If my guesses are wrong and you meant to do something else, please give us more detail.