本文介绍了Python内核为第二轮PyQt5 GUI而死的处理方法,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
- 在Python 3.5.2中使用Spyder | Anaconda 4.2.0(64位)Windows软件包。 qt:5.6.0
- 首次运行时,GUI窗口按预期打开
- 第二次运行时,没有任何内容打开,接收内核死亡,重新启动日志消息。
- Using Spyder in Python 3.5.2 |Anaconda 4.2.0 (64-bit) Windows package. qt: 5.6.0
- For first run, GUI window opens as expected
- For 2nd run, nothing opens, and receiving Kernel died, restarting log message.
gui1.py:
import sys from PyQt5.QtWidgets import QApplication, QWidget app = QApplication(sys.argv) w = QWidget() w.resize(250,150) w.show() #sys.exit(app.exec_()) app.exec_()
IPhython log:
runfile('F:/work/ws_python/TestProj1/gui1/gui1.py', wdir='F:/work/ws_python/TestProj1/gui1') runfile('F:/work/ws_python/TestProj1/gui1/gui1.py', wdir='F:/work/ws_python/TestProj1/gui1') Kernel died, restarting Kernel died, restarting Kernel died, restarting为什么内核为第二次运行而死并且如何解决是吗?
Why kernel dies for 2nd run and how to solve it?
(即使使用#sys.exit(app.exec_())作为最后一行也一样。)
(Doing the same even using #sys.exit(app.exec_()) as last line.)
推荐答案
此代码解决了问题,感谢提示。
This code fixed the problem, thanks for the hint.
app = QtCore.QCoreApplication.instance() if app is None: app = QtWidgets.QApplication(sys.argv)更多推荐
Python内核为第二轮PyQt5 GUI而死
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