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ImportError: DLL load failed while importing QtWidgets: 找不到指定的程序。
报错：
from PyQt5 import QtWidgets
ImportError: DLL load failed: 找不到指定的程序
解决方法，以管理员身份运行，
1、卸载重装。
pip install PyQt5
或者
conda install PyQt5
2、
在尝试解决方案1无效的情况下，发现问题所在是当前的虚拟环境缺少python3.dll文件，但是之前的笔记本并没有这个文件，工程仍然可以运行。安装了Python的依赖，可能导致系统环境在运行时出现错误。
普通命令下的python导入库文件，没有报错，OK。
退出exit(),切换环境然后就可以通过jupyter开始你的旅程-编写一个空白窗口.然后就没有问题啦。
代码
import sys from PyQt5.QtWidgets import QApplication, QWidget if __name__ ==
'__main__': app = QApplication(sys.argv) w = QWidget() w.resize(250, 150) w.move
(300, 300) w.setWindowTitle('Simple') w.show() sys.exit(app.exec_())
