Import qtcore Creating a simple GUI application using PyQt involves the following steps −. QtCore import * import sys app=QtGui. Yes! That creates a new file with the name mydesign. This will work on any platform that supports PyQT4 including Windows, Linux, UNIX, Android, OS X and iOS. QtCore import (2 QRectF, 3) 4 5 from qgis. QtWidgets import QLabel, QWidget, QHBoxLayout, QPushButton, QLineEdit from PyQt5. QtCore import QSize, Qt from PyQt6. setFixedSize(QSize(400, 300 import PyQt5. QML Types. QtCore找不到名为 'QPalette' 的类。这通常是因为在导入模块时出现了错误或版本不兼容的问题。 Apr 20, 2023 · 报错解决的省流小助手：出现报错 ImportError: DLL load failed while importing QtCore的原因在于，我之前装过pyside2，那个库里面也有designer. ystdqgzzaoiwkibdltmvhjiquvutafwyiqujyripqbhfrclcbzkfisoyaqopmmcpnhfxxobjwgwt