import sys, os from PyQt5.QtWidgets import * class BaseWindow(QWidget): def __init__(self): super().__init__() self.initUI() def initUI(self): self.lbl = QLabel("EXAMPLE") self.btn_1 = QPushButton("QInputDialog") self.btn_1.clicked.connect(self.Input_showDialog) self.btn_2 = QPushButton("QColorDialog") self.btn_2.clicked.connect(self.Color_showDialog) self.btn_3 = QPushButton("QFontDialog") self..