Can’t select entire row of data from QTableWidget
Problem Statement I’m trying to select rows of data from my QtableWidget and print them out to my console just so I can test some things, with the end goal being able to plot the data. However I can never grab the whole row of data. Background I have made a GUI that can embed several QTableWidgets by importing a specifically formatted CSV file. The goal is to be able to pull data from multiple rows from the same or different tables and then plot them in a side by side fashion. Where each row of data will be its own dataset and have its own plot, but there will be multiple plots on the same figure. To complete this task I have made a window called CompareWindow that opens when a Qpushbutton called «Compare» is pressed. The window prompts the user to type in the names of the tables and the respective rows from that table they wish to plot. After this information is submitted I have dictionary that I can reference which has saved all the QTableObjects that have been instantiated. Where the keys are the names given to the tables which are connected to their corresponding Table Object. Problem The two main methods I have tried to grab the row data are… The first idea was using TableObject.selectRow() command I would iterate through the rows I wanted, but whenever I did this to it would return a nonetype. The second method I tried was to iterate a given rows columns so it would fill a list one by one by appending the item values. However when I did this it only filled the list with the same number repeatedly, which was the first cell in my Qtable. Even when I explicitly called a certain row or column I would get the same output. The output being pulled is .12, the number from the first cell in my CSV file. Here is the code in question I’m having problems with.
def initiateMultiPlot(self, tableV, rowV, PlotV): """ 1. Match TableName values with the key values in our TableDB 2. When we find a match look at that key's corresponding Table Object, and iterate through that objects rows and select the rows specified by rowV 3.Call plot for those values """ #calls my class and creates a blank figure where eventually we will plot data on f = CreateFigure.FigureAssembly() print("") for i in tableV: """ tableV: is list of strings that represent assigned tablenames [Table1, Table2, Table3] rowV: is a list, containing lists representing rows from corresponding Tables the user wishes to plot. for example [[1,2],[3,4],[1]] means rows 1,2 from table1, rows 3,4 from table2. so on PlotV: is a string that is ethier "box" or "whisker" to tell what method to plot. Default right now is to do a simple boxplot """ print("Creating table instance") #Table Dictionary is setup so the names of the Tables (tableV) are the keys of the dictionary #and the actual table objects are referenced by these keys self.TableOBJ = self.TableDictionary[i] print("Data Type for the table object is. <>".format(type(self.TableOBJ))) #empty list that will store our row data self.Elements = [] try: for rows in rowV: for i in rows: print("rowV value is. <>".format(rowV)) print("current row list<>".format(rows)) print("i value is <>".format(i)) print("itterating") for j in range(self.TableOBJ.columnCount()): print("i value is . <>".format(i)) print("j value is . <>".format(j)) #FIRST idea try selecting entire row of data print("i value is . <>".format(i)) print("j value is . <>".format(j)) #entire row returns none-type EntireRow = self.TableOBJ.selectRow(i) print(EntireRow) #selecteditems #SECOND idea try using for loop and iterating through every value in a row item = self.TableOBJ.itemAt(i,j) #explicit call for (row 1, col 1) and (row 3, col 3), both which output .12 print(self.TableOBJ.itemAt(1,1).text()) print(self.TableOBJ.itemAt(3,3).text()) print("printing item. <>".format(item)) element = item.text() print(element) #list of .12 self.Elements.append(element) #elements = [self.TableOBJ.item(i, j).text() for j in range(self.TableOBJ.columnCount()) if # self.TableOBJ.item(i, j).text() != ""] #print(elements) except Exception as e: print(e) print(self.Elements) How do I get the contents of a row of QTableWidget with click on the button in python and PyQt
You bind it using the connect() function to a function that will do whatever you want. In you case, you might use partial to pass row number to the function. There are basic tutorials on the python wiki wiki.python.org/moin/PyQt and very likely similar questions on this site, and hopefully others here who know more about PyQt than I do.
1 Answer 1
Implemented signals and slots and now you will get idea how you can handle it
And mixing imports is not really a good idea
from PyQt4 import QtCore, QtGui import sys class EditButtonsWidget(QtGui.QWidget): editCalled = QtCore.pyqtSignal(str) def __init__(self, row, col, parent=None,): super(EditButtonsWidget,self).__init__(parent) self.row = row self.col = col self.parent = parent btnsave = QtGui.QPushButton('Save') btnedit = QtGui.QPushButton('edit') btndelete = QtGui.QPushButton('delete') layout = QtGui.QHBoxLayout() layout.setContentsMargins(0,0,0,0) layout.setSpacing(0) layout.addWidget(btnsave) layout.addWidget(btnedit) layout.addWidget(btndelete) self.setLayout(layout) btnedit.clicked.connect(self.getAllCellVal) @QtCore.pyqtSlot() def getAllCellVal(self): itmVal = <> for col in range(0, 4): itm = self.parent.item(self.row, col).text() itmVal[col] = str(itm) if itmVal: self.editCalled.emit(str(itmVal)) class MainForm(QtGui.QDialog): def __init__(self,parent=None): super(MainForm,self).__init__(parent) self.resize(400,200) self.tableWidget = QtGui.QTableWidget() layout = QtGui.QVBoxLayout() layout.addWidget( self.tableWidget) self.setLayout(layout) self.init_main_form() def bb(self): button = QtGui.QApplication.focusWidget() index = self.tableWidget.indexAt(button.pos()) if index.isValid(): print(index.row(), index.column()) def printEditVal(self, values): print values def init_main_form(self): data =[['a','b','c','d'],['z','y','x','w']] self.tableWidget.setColumnCount(5) for row in data: inx = data.index(row) self.tableWidget.insertRow(inx) self.tableWidget.setItem(inx,0,QtGui.QTableWidgetItem(str(row[0]))) self.tableWidget.setItem(inx,1,QtGui.QTableWidgetItem(str(row[1]))) self.tableWidget.setItem(inx,2,QtGui.QTableWidgetItem(str(row[2]))) self.tableWidget.setItem(inx,3,QtGui.QTableWidgetItem(str(row[3]))) buttonWid = EditButtonsWidget(inx,4, self.tableWidget) buttonWid.editCalled.connect(self.printEditVal) self.tableWidget.setCellWidget(inx,4,buttonWid) def main(): app = QtGui.QApplication(sys.argv) main_form = MainForm() main_form.show() app.exec_() if __name__ == '__main__': main() How do i get the row of a widget in a tablewidget in PyQt?
I have a TableWidget with ComboBoxes created by pressing a button. I need to get the row of a ComboBox if I interact with is so another CombobBox changes its contents. I found the this but I can’t understand it fully.
#include class TableWidget : public QTableWidget < Q_OBJECT public: TableWidget() < edit = new QLineEdit(this); setColumnCount(5); setRowCount(5); setCellWidget(4,1, edit); connect(edit, SIGNAL(textChanged(const QString)), this, SLOT(test1(const QString))); >public slots: void test1(const QString &text) < QWidget *wid = QApplication::focusWidget(); if (wid) < QModelIndex index = indexAt(wid->pos()); qDebug() > private: QLineEdit *edit; >; #include "main.moc" int main(int argc, char** argv)
current_widget = QApplication.focusWidget() >>
self.tableWidget = QtGui.QTableWidget(Dialog) self.tableWidget.setGeometry(QtCore.QRect(20, 150, 521, 91)) self.tableWidget.setStyleSheet(_fromUtf8("background-color: rgb(240, 240, 240);")) self.tableWidget.setFrameShape(QtGui.QFrame.NoFrame) self.tableWidget.setShowGrid(False) self.tableWidget.setObjectName(_fromUtf8("tableWidget")) self.tableWidget.setColumnCount(3) self.tableWidget.setRowCount(0) item = QtGui.QTableWidgetItem() self.tableWidget.setVerticalHeaderItem(0, item) item = QtGui.QTableWidgetItem() self.tableWidget.setVerticalHeaderItem(1, item) item = QtGui.QTableWidgetItem() self.tableWidget.setVerticalHeaderItem(2, item) item = QtGui.QTableWidgetItem() self.tableWidget.setHorizontalHeaderItem(0, item) item = QtGui.QTableWidgetItem() self.tableWidget.setHorizontalHeaderItem(1, item) item = QtGui.QTableWidgetItem() self.tableWidget.setHorizontalHeaderItem(2, item) self.tableWidget.horizontalHeader().setVisible(False) self.tableWidget.horizontalHeader().setStretchLastSection(True) self.tableWidget.verticalHeader().setVisible(False) self.tableWidget.verticalHeader().setStretchLastSection(False) index = self.tableWidget.rowCount() criteria1_comboBox = QtGui.QComboBox(self.tableWidget) font = QtGui.QFont() font.setPointSize(10) criteria1_comboBox.setFont(font) for combo_ind,i in enumerate(["Name", "Extension", "Size"]): criteria1_comboBox.addItem(_fromUtf8("")) criteria1_comboBox.setItemText(combo_ind, QtGui.QApplication.translate("Dialog", i, None, QtGui.QApplication.UnicodeUTF8)) self.tableWidget.setCellWidget(index, 0, criteria1_comboBox) Как получить название ряда в QTableWidget по его индексу?
Есть таблица, в которой 6 рядов. Каждый ряд имеет своё название. Есть ли метод получить это название по индексу?
self.table = QTableWidget(self) self.table. . # метод для получение 4 ряда Попробуйте следующие self.table.verticalHeaderItem(i).text(). Не работает в случае если имя раду не было присвоено
2 ответа 2
Вывести имя ряда можно с помощью метода .verticalHeaderItem(i).text()
from PyQt5 import QtCore, QtGui, QtWidgets class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(270, 270) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.tableWidget = QtWidgets.QTableWidget(self.centralwidget) self.tableWidget.setGeometry(QtCore.QRect(10, 10, 250, 250)) self.tableWidget.setObjectName("tableWidget") self.tableWidget.setColumnCount(0) self.tableWidget.setRowCount(0) MainWindow.setCentralWidget(self.centralwidget) self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow")) class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow): def __init__(self): super().__init__() self.setupUi(self) self.tableWidget.setColumnCount(2) self.tableWidget.setRowCount(2) item = QtWidgets.QTableWidgetItem() item.setText('имя') self.tableWidget.setVerticalHeaderItem(1, item) print(self.tableWidget.verticalHeaderItem(1).text()) # < --- выводит имя ряда if __name__ == '__main__': import sys app = QtWidgets.QApplication(sys.argv) Window1 = MainWindow() Window1.show() sys.exit(app.exec_()) QTableWidgetItem *QTableWidget::verticalHeaderItem(int row) const
Возвращает элемент вертикального заголовка для строки row.
QTableWidgetItem *QTableWidget::horizontalHeaderItem(int column) const
Возвращает элемент горизонтального заголовка для столбца, столбца, если он был установлен; в противном случае возвращает nullptr.
from PyQt5 import QtCore, QtGui, QtWidgets class Widget(QtWidgets.QWidget): def __init__(self, parent=None): super(Widget, self).__init__(parent) self.tableWidget = QtWidgets.QTableWidget(5, 6) self.book_button = QtWidgets.QPushButton("Click me") self.book_button.clicked.connect(self.book_clicked) lay = QtWidgets.QVBoxLayout(self) lay.addWidget(self.tableWidget) lay.addWidget(self.book_button) self.tableWidget.setHorizontalHeaderLabels("P1 P2 P3 P4 P5 P6".split()) self.tableWidget.setVerticalHeaderLabels("C101 C214 C320 F04 E201".split()) for i in range(self.tableWidget.rowCount()): for j in range(self.tableWidget.columnCount()): item = QtWidgets.QTableWidgetItem() item.setFlags(item.flags() | QtCore.Qt.ItemIsUserCheckable) item.setCheckState(QtCore.Qt.Unchecked) self.tableWidget.setItem(i, j, item) @QtCore.pyqtSlot() def book_clicked(self): items = [] for i in range(self.tableWidget.rowCount()): for j in range(self.tableWidget.columnCount()): item = self.tableWidget.item(i, j) if item.checkState() == QtCore.Qt.Checked: items.append(item) for it in items: r = it.row() c = it.column() v = self.tableWidget.horizontalHeaderItem(c).text() h = self.tableWidget.verticalHeaderItem(r).text() print(h, v) if __name__ == '__main__': import sys app = QtWidgets.QApplication(sys.argv) w = Widget() w.show() sys.exit(app.exec_())