Pyqt Gui 在循环中冻结 [英] Pyqt Gui Freezes while in loop
本文介绍了Pyqt Gui 在循环中冻结的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在使用 PyQt 制作端口扫描程序，但是当我激活循环时 Gui 冻结了.我该如何解决?我添加了 time.sleep() 函数，但它仍然冻结.这是它冻结的功能.谢谢.
Im making port scanner program with PyQt but Gui freezes when i activate loop.How can i fix that? I added time.sleep() function but it still freezes. This is the function it freezes. Thanks.
try:
time.sleep(1)
hostname=self.adres.text()
hostip=socket.gethostbyname(hostname)
uyari1="Scanning remote host, {}\n".format(hostip)
self.durum.append(uyari1)
print(uyari1)
for port in range(1,1025):
time.sleep(0.1)
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
result = sock.connect_ex((hostip, port))
if result == 0:
time.sleep(0.01)
print ("Port {}: \t Open".format(port))
self.durum.append("Port {}: \t Open\n".format(port))
sock.close()
完整代码:
import socket,os,time
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(596, 412)
self.centralwidget = QtGui.QWidget(MainWindow)
self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
self.label = QtGui.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(120, -10, 331, 91))
self.label.setObjectName(_fromUtf8("label"))
self.label_2 = QtGui.QLabel(self.centralwidget)
self.label_2.setGeometry(QtCore.QRect(10, 90, 91, 16))
self.label_2.setObjectName(_fromUtf8("label_2"))
self.adres = QtGui.QLineEdit(self.centralwidget)
self.adres.setGeometry(QtCore.QRect(100, 90, 371, 22))
self.adres.setObjectName(_fromUtf8("adres"))
self.durum = QtGui.QTextEdit(self.centralwidget)
self.durum.setGeometry(QtCore.QRect(10, 140, 571, 191))
self.durum.setObjectName(_fromUtf8("durum"))
self.baslat = QtGui.QPushButton(self.centralwidget)
self.baslat.setGeometry(QtCore.QRect(480, 90, 101, 21))
self.baslat.setObjectName(_fromUtf8("baslat"))
self.dosyaya = QtGui.QPushButton(self.centralwidget)
self.dosyaya.setGeometry(QtCore.QRect(490, 340, 91, 25))
self.dosyaya.setObjectName(_fromUtf8("dosyaya"))
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtGui.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 596, 21))
self.menubar.setObjectName(_fromUtf8("menubar"))
MainWindow.setMenuBar(self.menubar)
self.hakkindaa = QtGui.QPushButton(self.centralwidget)
self.hakkindaa.setGeometry(QtCore.QRect(10, 340, 91, 25))
self.hakkindaa.setObjectName(_fromUtf8("hakkindaa"))
self.hakkindaa.setText("Hakkında")
self.statusbar = QtGui.QStatusBar(MainWindow)
self.statusbar.setObjectName(_fromUtf8("statusbar"))
MainWindow.setStatusBar(self.statusbar)
QtCore.QObject.connect(self.hakkindaa, QtCore.SIGNAL(_fromUtf8("clicked()")), self.hakkinda)
QtCore.QObject.connect(self.dosyaya, QtCore.SIGNAL(_fromUtf8("clicked()")), self.dosyayaya)
QtCore.QObject.connect(self.baslat, QtCore.SIGNAL(_fromUtf8("clicked()")), self.baslat_btn)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def hakkinda(self):
QtGui.QMessageBox.about(None, "About", "Ege Öz 2014")
def baslat_btn(self):
try:
time.sleep(1)
hostname=self.adres.text()
hostip=socket.gethostbyname(hostname)
uyari1="Scanning remote host, {}\n".format(hostip)
self.durum.append(uyari1)
print(uyari1)
for port in range(1,1025):
time.sleep(0.1)
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
result = sock.connect_ex((hostip, port))
if result == 0:
time.sleep(0.01)
print ("Port {}: \t Open".format(port))
self.durum.append("Port {}: \t Open\n".format(port))
sock.close()
except socket.gaierror:
self.durum.append("Hostname could not be resolved.")
print("Hostname could not be resolved.")
self.adres.setText("")
except socket.error:
self.durum.append("Could not connect to server.")
print("Could not connect to server.")
self.adres.setText("")
def dosyayaya(self):
self.durum.append("Saving log file to home directory...")
ev=os.getenv("USER")
data=self.durum.toPlainText()
yol="/home/"+ev+"/portscanner.log"
f = open (yol,"w")
f.write(data)
f.close()
self.durum.append("Log file saved.")
print ("Log file saved.")
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(_translate("MainWindow", "Port Scanner", None))
self.label.setText(_translate("MainWindow", "<html><head/><body><p align=\"center\"><span style=\" font-size:11pt; font-weight:600;\">Port Scanner</span></p><p>Enter the remote host adress and press start.</p></body></html>", None))
self.label_2.setText(_translate("MainWindow", "Remote Host:", None))
self.baslat.setText(_translate("MainWindow", "Start Scanning", None))
self.dosyaya.setText(_translate("MainWindow", "Save to file", None))
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
MainWindow = QtGui.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
推荐答案
您应该在 for 循环中调用 QtCore.QCoreApplication.processEvents() 以使 Qt 的事件循环处理传入的事件(从键盘或鼠标).
You should call QtCore.QCoreApplication.processEvents() within your for loop to make the Qt's event loop proceed the incoming event (from keyboard or mouse).
这篇关于Pyqt Gui 在循环中冻结的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
