text: # !/usr/bin/env python3
  # -*- coding:utf-8 -*-
  
  # @Datetime : 2019/11/14 上午2:26
  # @Author   : Fangyang
  # @Software : PyCharm
  
  import sys
  from PyQt5.QtWidgets import QApplication
  import pyqtgraph as pg
  import numpy as np
  
  app = QApplication(sys.argv)
  x = np.random.normal(size=1000)
  y = np.random.normal(size=1000)
  pg.plot(x, y, pen=None, symbol='o')
  
  status = app.exec_()
  sys.exit(status)
  
  
  if __name__ == '__main__':
      pass
  
  
  