Как автоматически обновлять таблицу в PySide?

Question

У меня есть ниже фрагмент, чтобы обрывать данные с веб-сайта и показывать результат в виде таблицы. Как обновлять или обновлять таблицу за каждые 1 минуту или 30 секунд. Есть ли все-таки сделать это в pyside?

import operator 
from PySide.QtCore import * 
from PySide.QtGui import * 
from urllib import request 
from lxml import etree 

def getData(): 
    url = "" # Removed valid url 
    response = request.urlopen(url) 
    html_parser = etree.HTMLParser() 
    tree = etree.parse(response, html_parser) 
    data_sets = tree.xpath("//div[@class='dataList']") 
    headers = ['Company Name','LTP','Change', '%Chg', 'Volume (lacs)', '30 Days % Change','365 Days % Change'] 
    share_results = [] 

    for element in data_sets: 
     result_list = [] 
     share_comp_name = element.xpath('ul/li/p/a')[0] 
     result_list.append(share_comp_name.text) 
     share_value_list = element.xpath('ul/li/span') 
     counter = 0 
     for data in share_value_list: 
      result_list.append(float(str(data.text))) 
      counter += 1 
     share_results.append(tuple(result_list)) 
    return headers, share_results 

class MyWindow(QWidget): 

    def __init__(self, data_list, header, *args): 
     QWidget.__init__(self, *args) 
     self.setGeometry(300, 200, 550, 450) 
     self.setWindowTitle("Click on column title to sort") 
     table_model = MyTableModel(self, data_list, header) 
     table_view = QTableView() 
     table_view.setModel(table_model) 
     font = QFont("Verdana", 9) 
     table_view.setFont(font) 
     table_view.resizeColumnsToContents() 
     table_view.setSortingEnabled(True) 
     layout = QVBoxLayout(self) 
     layout.addWidget(table_view) 
     self.setLayout(layout) 

class MyTableModel(QAbstractTableModel): 

    def __init__(self, parent, mylist, header, *args): 
     QAbstractTableModel.__init__(self, parent, *args) 
     self.mylist = mylist 
     self.header = header 

    def rowCount(self, parent): 
     return len(self.mylist) 

    def columnCount(self, parent): 
     return len(self.header) 

    def data(self, index, role): 
     if not index.isValid(): 
      return None 
     elif role != Qt.DisplayRole: 
      return None 
     return self.mylist[index.row()][index.column()] 

    def headerData(self, col, orientation, role): 
     if orientation == Qt.Horizontal and role == Qt.DisplayRole: 
      return self.header[col] 
     return None 

    def sort(self, col, order): 
     """sort table by given column number col""" 
     self.emit(SIGNAL("layoutAboutToBeChanged()")) 
     self.mylist = sorted(self.mylist, 
      key=operator.itemgetter(col)) 
     if order == Qt.DescendingOrder: 
      self.mylist.reverse() 
     self.emit(SIGNAL("layoutChanged()")) 


header, data_list = getData() 
app = QApplication([]) 
win = MyWindow(data_list, header) 
win.show() 
app.exec_() 

Пожалуйста, помогите.

Answer 1

Используется Qtimer для изменения модели для Table view.

import operator 
from PySide.QtCore import * 
from PySide.QtGui import * 
from urllib import request 
from lxml import etree 
import sched, time 

s = sched.scheduler(time.time, time.sleep) 

def getData(): 
    url = "" # Removed url 
    response = request.urlopen(url) 
    html_parser = etree.HTMLParser() 
    tree = etree.parse(response, html_parser) 
    data_sets = tree.xpath("//div[@class='dataList']") 
    headers = ['Company Name','LTP','Change', '%Chg', 'Volume (lacs)', '30 Days % Change','365 Days % Change'] 
    share_results = [] 

    for element in data_sets: 
     result_list = [] 
     share_comp_name = element.xpath('ul/li/p/a')[0] 
     result_list.append(share_comp_name.text) 
     share_value_list = element.xpath('ul/li/span') 
     counter = 0 
     for data in share_value_list: 
      result_list.append(float(str(data.text))) 
      counter += 1 
     share_results.append(tuple(result_list)) 
    return headers, share_results 

class MyWindow(QWidget): 

    def __init__(self, *args): 
     QWidget.__init__(self, *args) 
     self.setGeometry(300, 200, 550, 450) 
     self.setWindowTitle("Top Shares") 
     self.table_model = MyTableModel(self) 
     self.table_view = QTableView() 
     self.table_view.setModel(self.table_model) 
     font = QFont("Verdana", 9) 
     self.table_view.setFont(font) 
     self.table_view.resizeColumnsToContents() 
     self.table_view.setSortingEnabled(True) 
     layout = QVBoxLayout(self) 
     layout.addWidget(self.table_view) 
     self.setLayout(layout) 
     # Added timer 
     timer = QTimer(self) 
     timer.timeout.connect(self.show_data) 
     timer.start(10000) 

    def show_data(self): 
     self.table_model = MyTableModel(self) 
     self.table_view.setModel(self.table_model) 


class MyTableModel(QAbstractTableModel): 
    class_counter = 0 
    def __init__(self, parent, *args): 
     QAbstractTableModel.__init__(self, parent, *args) 
     self.header, self.mylist = getData() 

    def rowCount(self, parent): 
     return len(self.mylist) 

    def columnCount(self, parent): 
     return len(self.header) 

    def data(self, index, role): 
     if not index.isValid(): 
      return None 
     elif role != Qt.DisplayRole: 
      return None 
     return self.mylist[index.row()][index.column()] 

    def headerData(self, col, orientation, role): 
     if orientation == Qt.Horizontal and role == Qt.DisplayRole: 
      return self.header[col] 
     return None 

    def sort(self, col, order): 
     """sort table by given column number col""" 
     self.emit(SIGNAL("layoutAboutToBeChanged()")) 
     self.mylist = sorted(self.mylist, 
      key=operator.itemgetter(col)) 
     if order == Qt.DescendingOrder: 
      self.mylist.reverse() 
     self.emit(SIGNAL("layoutChanged()")) 

app = QApplication([]) 
win = MyWindow() 
win.show() 
win.repaint() 
win.update() 
app.exec_()