from PyQt5 import QtWidgets,QtCore,QtGui
import pyqtgraph as pg
import sys
import traceback
import psutilclass MainUi(QtWidgets.QMainWindow):def __init__(self):super().__init__()self.setWindowTitle("CPU使用率监控")self.main_widget = QtWidgets.QWidget() # 创建一个主部件self.main_layout = QtWidgets.QGridLayout() # 创建一个网格布局self.main_widget.setLayout(self.main_layout) # 设置主部件的布局为网格self.setCentralWidget(self.main_widget) # 设置窗口默认部件self.plot_widget = QtWidgets.QWidget() # 实例化一个widget部件作为K线图部件self.plot_layout = QtWidgets.QGridLayout() # 实例化一个网格布局层self.plot_widget.setLayout(self.plot_layout) # 设置K线图部件的布局层self.plot_plt = pg.PlotWidget() # 实例化一个绘图部件self.plot_plt.showGrid(x=True,y=True) # 显示图形网格self.plot_layout.addWidget(self.plot_plt) # 添加绘图部件到K线图部件的网格布局层# 将上述部件添加到布局层中self.main_layout.addWidget(self.plot_widget, 1, 0, 3, 3)self.setCentralWidget(self.main_widget)self.plot_plt.setYRange(max=100,min=0)self.data_list = []self.timer_start()# 启动定时器 时间间隔秒def timer_start(self):self.timer = QtCore.QTimer(self)self.timer.timeout.connect(self.get_cpu_info)self.timer.start(1000)# 获取CPU使用率def get_cpu_info(self):try:cpu = "%0.2f" % psutil.cpu_percent(interval=1)self.data_list.append(float(cpu))print(float(cpu))self.plot_plt.plot().setData(self.data_list,pen='g')except Exception as e:print(traceback.print_exc())def main():app = QtWidgets.QApplication(sys.argv)gui = MainUi()gui.show()sys.exit(app.exec_())if __name__ == '__main__':main()
