importsysimportmatplotlib.pyplotaspltimportnumpyasnpfromPyQt5.QtWidgetsimportQWidget, QApplication, QVBoxLayout, QPushButtonfrommatplotlib.backends.backend_qt5aggimportFigureCanvasQTAggasFCclassMyWidget(QWidget):def__init__(self):super(MyWidget, self).__init__() self.init_ui()definit_ui(self):...