add_row

#This code helps to add a new row to the existing data file

import csv, codecs 
import os
 
from PyQt5 import QtCore, QtGui, QtWidgets, QtPrintSupport
from PyQt5.QtGui import QImage, QPainter
from PyQt5.QtCore import QFile
 
class MyWindow(QtWidgets.QWidget):
    def __init__(self, fileName, parent=None):
        super(MyWindow, self).__init__(parent)
        self.fileName = ""
        self.fname = "plot"
        self.model =  QtGui.QStandardItemModel(self)
 
        self.tableView = QtWidgets.QTableView(self)
        self.tableView.setStyleSheet(stylesheet(self))
        self.tableView.setModel(self.model)
        self.tableView.horizontalHeader().setStretchLastSection(True)
        self.tableView.setShowGrid(True)
        self.tableView.setGeometry(50, 50, 780, 645)
        self.model.dataChanged.connect(self.finishedEdit)
 
        self.pushAddRow = QtWidgets.QPushButton(self)
        self.pushAddRow.setText("add Row")
        self.pushAddRow.clicked.connect(self.addRow)
        self.pushAddRow.setFixedWidth(80)
        self.pushAddRow.setStyleSheet(stylesheet(self))
        
        item = QtGui.QStandardItem()
        self.model.appendRow(item)
        self.model.setData(self.model.index(0, 0), "", 0)
        self.tableView.resizeColumnsToContents()
 
 
    def finishedEdit(self):
        self.tableView.resizeColumnsToContents()
    
    def addRow(self):
        item = QtGui.QStandardItem("")
        self.model.appendRow(item)
  
 
def stylesheet(self):
    return """
       QTableView
       {
border: 1px solid grey;
border-radius: 0px;
font-size: 12px;
        background-color: #f8f8f8;
selection-color: white;
selection-background-color: #00ED56;
       }
 
QTableView QTableCornerButton::section {
    background: #D6D1D1;
    border: 1px outset black;
}
 
QPushButton
{
font-size: 11px;
border: 1px inset grey;
height: 24px;
width: 80px;
color: black;
background-color: #e8e8e8;
background-position: bottom-left;
} 
 
QPushButton::hover
{
border: 2px inset goldenrod;
font-weight: bold;
color: #e8e8e8;
background-color: green;
} 
"""

if __name__ == "__main__":
    import sys
 
    app = QtWidgets.QApplication(sys.argv)
    app.setApplicationName('MyWindow')
    main = MyWindow('')
    main.setMinimumSize(300, 300)
    main.setGeometry(0,0,800,700)
    main.setWindowTitle("Plotter")
    main.show()
    sys.exit(app.exec_())