Узнать количество столбцов PyMySQL5?

import pymysql.cursors

import sys
from PyQt5.QtWidgets import QMainWindow, QApplication, QWidget, QAction, QTableWidget,QTableWidgetItem,QVBoxLayout
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import pyqtSlot


class App(QWidget):

    def __init__(self):
        super().__init__()
        self.title = 'Users'
        self.left = 0
        self.top = 0
        self.width = 300
        self.height = 200
        self.initUI(print_hi())

    def initUI(self, cursor):
        self.setWindowTitle(self.title)
        self.setGeometry(self.left, self.top, self.width, self.height)

        self.createTable(cursor)

        # Add box layout, add table to box layout and add box layout to widget
        self.layout = QVBoxLayout()
        self.layout.addWidget(self.tableWidget)
        self.setLayout(self.layout)

        # Show widget
        self.show()

    def createTable(self, cursor):
        # Create table
        self.tableWidget = QTableWidget()
        self.tableWidget.setRowCount(cursor.rowcount)
        desc = cursor.description
        self.tableWidget.setColumnCount(1)
        print(desc[0][0]+'\n')
        print(desc[1][0]+'\n')
        print(desc[2][0]+'\n')
        print(desc[3][0]+'\n')
        print(desc[4][0]+'\n')
        print(desc[5][0]+'\n')
        print(desc[6][0]+'\n')
        print(desc[7][0]+'\n')
        #for(row in cursor)



        # self.tableWidget.setItem(0, 0, QTableWidgetItem("Cell (1,1)"))
        # self.tableWidget.setItem(0, 1, QTableWidgetItem("Cell (1,2)"))
        # self.tableWidget.setItem(1, 0, QTableWidgetItem("Cell (2,1)"))
        # self.tableWidget.setItem(1, 1, QTableWidgetItem("Cell (2,2)"))
        # self.tableWidget.setItem(2, 0, QTableWidgetItem("Cell (3,1)"))
        # self.tableWidget.setItem(2, 1, QTableWidgetItem("Cell (3,2)"))
        # self.tableWidget.setItem(3, 0, QTableWidgetItem("Cell (4,1)"))
        # self.tableWidget.setItem(3, 1, QTableWidgetItem("Cell (4,2)"))

        self.tableWidget.move(0, 0)

        # table selection change
        self.tableWidget.doubleClicked.connect(self.on_click)

    @pyqtSlot()
    def on_click(self):
        print("\n")
        for currentQTableWidgetItem in self.tableWidget.selectedItems():
            print(currentQTableWidgetItem.row(), currentQTableWidgetItem.column(), currentQTableWidgetItem.text())

def print_hi():
    # Use a breakpoint in the code line below to debug your script.
    # Подключиться к базе данных.
    connection = pymysql.connect(host='185.26.122.4',
                                 user='host6491_root',
                                 password='R0oT',
                                 db='host6491_test',
                                 charset='utf8mb4',
                                 cursorclass=pymysql.cursors.DictCursor)

    print("connect successful!!")

    try:

        with connection.cursor() as cursor:

            # SQL
            sql = "SELECT * FROM `users`"

            # Выполнить команду запроса (Execute Query).
            cursor.execute(sql)

            print("cursor.description: ", cursor.description)

            print()

            for row in cursor:
                print(row)

    finally:
        # Закрыть соединение (Close connection).
        connection.close()
    return cursor

if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = App()
    sys.exit(app.exec_())