How to Add Dynamic Data to a QML Table

I'm trying to add rows to a table from Python. I'm using a TableView described with QML.

I can't figure out how to add a model to the table, unless the model is also in QML. But I can't figure out how to add values to the model.

import sys
from PyQt5.QtCore import QAbstractTableModel, QObject, QUrl
from PyQt5.QtQml import QQmlApplicationEngine
from PyQt5.QtQuick import QQuickView
from PyQt5.QtWidgets import QApplication



myApp = QApplication(sys.argv)

engine = QQmlApplicationEngine()
context = engine.rootContext()
context.setContextProperty("main", engine)

engine.load('users.qml')

mainWin = engine.rootObjects()[0]

# Add items
userTable = mainWin.findChild(QObject, "userTable")
tableModel = mainWin.findChild(QObject, "libraryModel")
tableModel.setData(tableModel.index(0), "one")
tableModel.setData(tableModel.index(1), "one")

mainWin.show()

sys.exit(myApp.exec_())

users.qml

import QtQuick 2.3
import QtQuick.Controls 1.2

ApplicationWindow {
    ListModel {
        id: libraryModel
        objectName: "libraryModel"
        ListElement {
            title: "A Masterpiece"
            author: "Gabriel"
        }
        ListElement {
            title: "Brilliance"
            author: "Jens"
        }
        ListElement {
            title: "Outstanding"
            author: "Frederik"
        }
    }

    TableView {
        objectName: "userTable"
        anchors.fill: parent
        TableViewColumn {
            role: "title"
            title: "Title"
        }
        TableViewColumn {
            role: "author"
            title: "Author"
        }
        model: libraryModel
    }
}

Edit

tableModel.append({'author': 'one', 'title': 'two'})

builtins.TypeError: unable to convert argument 0 of 

QAbstractListModel.append from 'dict' to 'QQmlV4Function*'