Question

我正在尝试抓取几个网页，我提前知道了这些网址。使用这里找到的相当标准的代码，这就是我所拥有的：

from lxml import html
import requests
from bs4 import BeautifulSoup


from PyQt4.QtGui import *
from PyQt4.QtCore import *
from PyQt4.QtWebKit import *


class Render(QWebPage):
    def __init__(self, url):
        self.app = QApplication(sys.argv)
        QWebPage.__init__(self)
        self.loadFinished.connect(self._loadFinished)
        self.mainFrame().load(QUrl(url))
        self.app.exec_()

    def _loadFinished(self, result):
        self.frame = self.mainFrame()
        self.app.quit()

使用各种URL执行for循环可以正常使用前两个，然后崩溃并使用以下内容：

QObject::connect: Cannot connect 
(null)::configurationAdded(QNetworkConfiguration) to 
QNetworkConfigurationManager::configurationAdded(QNetworkConfiguration)
QObject::connect: Cannot connect 
(null)::configurationRemoved(QNetworkConfiguration) to 
QNetworkConfigurationManager::configurationRemoved(QNetworkConfiguration)
QObject::connect: Cannot connect 
(null)::configurationChanged(QNetworkConfiguration) to 
QNetworkConfigurationManager::configurationChanged(QNetworkConfiguration)
QObject::connect: Cannot connect (null)::onlineStateChanged(bool) to 
QNetworkConfigurationManager::onlineStateChanged(bool)
QObject::connect: Cannot connect (null)::configurationUpdateComplete() to 
QNetworkConfigurationManager::updateCompleted()

在研究类似问题后，我（模糊）对该问题的理解是，从一次迭代到下一次迭代，QApplication可能无法正确关闭。我尝试在每次迭代中暂停脚本5-20秒，没有任何影响。找不到任何其他适用的建议。任何有关此事的帮助表示赞赏。

Python pyQt4 QObject :: connect：无法连接（null）

0 个答案: