[英]Displaying run-time output in pyqt
我有python代碼,可在單擊按鈕后在主窗口中簡單地顯示輸出。 這是我的代碼:
from PyQt4 import QtCore, QtGui
import time
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
_fromUtf8 = lambda s: s
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(176, 156)
self.centralWidget = QtGui.QWidget(MainWindow)
self.centralWidget.setObjectName(_fromUtf8("centralWidget"))
self.gridLayout = QtGui.QGridLayout(self.centralWidget)
self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
self.pushButton = QtGui.QPushButton(self.centralWidget)
self.pushButton.setObjectName(_fromUtf8("pushButton"))
self.gridLayout.addWidget(self.pushButton, 0, 0, 1, 1)
self.label = QtGui.QLabel(self.centralWidget)
self.label.setObjectName(_fromUtf8("label"))
self.gridLayout.addWidget(self.label, 1, 0, 1, 1)
MainWindow.setCentralWidget(self.centralWidget)
self.menuBar = QtGui.QMenuBar(MainWindow)
self.menuBar.setGeometry(QtCore.QRect(0, 0, 176, 25))
self.menuBar.setObjectName(_fromUtf8("menuBar"))
MainWindow.setMenuBar(self.menuBar)
self.mainToolBar = QtGui.QToolBar(MainWindow)
self.mainToolBar.setObjectName(_fromUtf8("mainToolBar"))
MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar)
self.statusBar = QtGui.QStatusBar(MainWindow)
self.statusBar.setObjectName(_fromUtf8("statusBar"))
MainWindow.setStatusBar(self.statusBar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
self.pushButton.clicked.connect( self.Out)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))
self.pushButton.setText(QtGui.QApplication.translate("MainWindow", "Start", None, QtGui.QApplication.UnicodeUTF8))
self.label.setText(QtGui.QApplication.translate("MainWindow", "0.0", None, QtGui.QApplication.UnicodeUTF8))
def Out(self):
for i in range(10):
time.sleep(0.5)
out = str(i)
self.label.setText(out)
if i == 10:
break
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_())
但是我想在標簽中連續輸出,並且在程序執行后給出。 請提出更正代碼或任何技巧的建議。 對不起,英語不好。
對於示例代碼,可以使用processEvents來保持gui更新:
def Out(self):
for i in range(10):
time.sleep(0.5)
out = str(i)
self.label.setText(out)
QtGui.qApp.processEvents()
if i == 10:
break
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