thx http://flame-blaze.net/archives/2991

table_widget.py

## -*- coding: utf-8 -*-
# for maya2015
from PySide import QtGui, QtCore
from maya import OpenMayaUI as omUI
from shiboken import wrapInstance
from PySide.QtUiTools import QUiLoader

from maya.app.general.mayaMixin import MayaQWidgetBaseMixin


def mayaMainWindow():
    mainWinPtr = omUI.MQtUtil.mainWindow()
    return wrapInstance(long(mainWinPtr), QtGui.QWidget)

class tableWidget(MayaQWidgetBaseMixin, QtGui.QDialog):
    
    uiFile = "c:/table.ui"
    
    def __init__(self):
        
        super(tableWidget, self).__init__(mayaMainWindow())

        self.setWidget()
        
        layout = QtGui.QVBoxLayout()
        layout.addWidget(self.ui)
        self.setLayout(layout)

        #右クリック時のメニュー
        self.ui.testTable.setContextMenuPolicy(QtCore.Qt.ActionsContextMenu)
        addRowMenu = QtGui.QAction(self.ui.testTable)
        addRowMenu.setText("addRow")
        addRowMenu.triggered.connect(self.addRow)
        self.ui.testTable.addAction(addRowMenu)

        addColMenu = QtGui.QAction(self.ui.testTable)
        addColMenu.setText("addColumn")
        addColMenu.triggered.connect(self.addColumn)
        self.ui.testTable.addAction(addColMenu)

        width  = self.ui.geometry().width()
        height = self.ui.geometry().height()
        #Windowサイズ変更
        self.resize(width,height)

    def setWidget(self):

        qLoader = QUiLoader()
        qFile = QtCore.QFile(self.uiFile)
        qFile.open(QtCore.QFile.ReadOnly)
        self.ui = qLoader.load(qFile, self)
        qFile.close()

    def addRow(self):
        
        rowCount = self.ui.testTable.rowCount()
        colCount = self.ui.testTable.columnCount()
        self.ui.testTable.setRowCount(rowCount+1)
        
        for i in range(colCount):
            self.ui.testTable.setItem(rowCount,i,QtGui.QTableWidgetItem(str(i)))

    def addColumn(self):

        columnCount = self.ui.testTable.columnCount()
        rowCount    = self.ui.testTable.rowCount()
        
        self.ui.testTable.setColumnCount(columnCount+1)

        for i in range(rowCount):
            self.ui.testTable.setItem(i,columnCount,QtGui.QTableWidgetItem(str(i)))
        
        
if __name__ == "__main__":
    app = tableWidget()
    app.show()