from PyQt5 import QtCore, QtGui, QtWidgetsfrom PyQt5.QtWidgets import QLineEdit, QFileDialog问题是:ImportError: cannot import name 'QtCore' from partially initialized modul
当我查看调用堆栈时,线程尚未结束,当再次单击时,另一个线程启动,从而获得无限活动线程,并消耗更多不必要的内存。我试着把terminate()和put ()放在一起,但是没有什么能阻止线程。from PyQt5.QtWidgets import QMainWindow, QApplicationfrom PyQt5 importQtWidgetsimport time
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