How to delete entire row in pyqt4 (qtable widget)

Here when I am trying to delete the row selected I am getting the following error:

"TypeError: argument 1 of QAbstractItemModel.removeRow() has an invalid type".

I have searched a lot for the correct way of deleting selected row/rows in qtablewidget of pyqt. However, I am not able to delete the selected row/rows.

Can you please share a sample code for deleting selected row/rows in qtablewidget of pyqt?

import sys
from functools import partial
from PyQt4 import QtGui, QtCore


class Example(QtGui.QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()

def initUI(self):
self. table = QtGui.QTableWidget(self)
self.table.setGeometry(10,70, 600,300)
self.table.setRowCount(3)
self.table.setColumnCount(6)

self.table.verticalHeader().hide()
self.table.setEditTriggers(QtGui.QAbstractItemView.NoEditTriggers)

fnt = self.table.font()
fnt.setPointSize(11)
self.table.setFont(fnt)

self.table.setHorizontalHeaderLabels(("S.no, Item,Qty,Rate(Rs:),total,"",").split(','))

all_data = [("1", "xxx", 10, 0),
("2", "yyy", 20, 0),
("3", "zzz", 30, 0)]

for r, row_data in enumerate(all_data):
for c, value in zip((0, 1, 3), row_data):
it = QtGui.QTableWidgetItem(str(value))
self.table.setItem(r, c, it)

for r in range(self.table.rowCount()):

spin = QtGui.QSpinBox(minimum=0, maximum=50)
spin.valueChanged.connect(partial(self.calculateSubTotal, r))
self.table.setCellWidget(r, 2, spin)

btn = QtGui.QPushButton(icon=QtGui.QIcon("trash1.png"))
self.table.setCellWidget(r, 5, btn)
# selected = self.table.selectedItems()
# btn.clicked.connect(self.remove)

self.setWindowTitle("table")
self.setGeometry(200, 300, 400, 300)
self.show()
# def remove(self,row):
# self.table.removeRow(self.table.currentRow)

def calculateSubTotal(self, row, value):
rate = float(self.table.item(row, 3).text())
subtotal = value * rate

item_subtotal = self.table.item(row, 4)
if item_subtotal is None:
item_subtotal = QtGui.QTableWidgetItem()
self.table.setItem(row, 4, item_subtotal)

item_subtotal.setText(str(subtotal))

def main():
app = QtGui.QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())


if __name__ == '__main__':
main()


2 Answers
2

When you press the button the QTableWidget is not notified since the events of the widgets are not notified to the QTableWidget so currentRow will not serve you. instead you should use the variable r of the for-loop, and for that we use functools.partial(...)

QTableWidget

QTableWidget

currentRow

r

functools.partial(...)

for r in range(self.table.rowCount()):
...

btn = QtGui.QPushButton(icon=QtGui.QIcon("trash1.png"))
self.table.setCellWidget(r, 5, btn)
btn.clicked.connect(partial(self.table.removeRow, r)) # <---


Your syntax was almost correct, try to add brackets :

self.table.removeRow(self.table.currentRow())


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