plottipy.py 文件源码

def refresh(self):
        l = list(list_ports.comports())
        new_ports = [Port(p) for p in l]
        old_ports = self.getPortList()

        # Add new ports to list
        for p in new_ports:
            if p not in self.getPortList():
                self.list_w.addItem(p)

        # Remove disappeared ports from list
        for i in range(self.list_w.count()):
            if(self.list_w.item(i) is not None):
                p = self.list_w.item(i)
                if p not in new_ports:
                    p.close()
                    self.list_w.takeItem(i)