Get_all_Unix_device.py

import dbus

__all__ = ("getAllUnixDevices")

def getAllUnixDevices():
    busSession = dbus.SessionBus()
    obj = busSession.get_object("org.gtk.vfs.UDisks2VolumeMonitor", "/org/gtk/Private/RemoteVolumeMonitor")
    iface = dbus.Interface(obj, "org.gtk.Private.RemoteVolumeMonitor")
    _listdevice_ = iface.List()
    devices = []

    for i in _listdevice_[0]:
        for j in i:
            if isinstance(j, dbus.Dictionary):
                try:
                    #FIXME How do is select USB devices better without third party?
                    
                    path = deviceList("/org/freedesktop/UDisks2/block_devices/"+j["unix-device"].lstrip("/dev/"))
                    result = findUSBDevices(path)
                    if result[0]:
                        size = result[1].Get("org.freedesktop.UDisks2.Drive", "Size")
                        if size >= 10**12:
                            size = "%.0fTB" % round(size / 10**12)
                        elif size >= 10**9:
                            size = "%.0fGB" % round(size / 10**9)
                        elif size >= 10**6:
                            size = "%.0fMB" % round(size / 10**6)
                        elif size >= 10**3:
                            size = "%.0fkB" % round(size / 10**3)
                        else:
                            size = "%.0fB" % round(size)
                        devices.append([str(result[1].Get("org.freedesktop.UDisks2.Drive", "Vendor"))+" "+str(result[1].Get("org.freedesktop.UDisks2.Drive", "Model"))+" "+size, str(j["unix-device"]), result[1].Get("org.freedesktop.UDisks2.Drive", "Size")])
                        
                except KeyError:
                    pass
    return devices
        
    
def deviceList(objectPath):
    busSys = dbus.SystemBus()
    obj = busSys.get_object("org.freedesktop.UDisks2", objectPath)
    iface = dbus.Interface(obj, "org.freedesktop.DBus.Properties")
    return iface.Get("org.freedesktop.UDisks2.Block", "Drive")

def findUSBDevices(objectPath):
    busSys = dbus.SystemBus()
    obj = busSys.get_object("org.freedesktop.UDisks2", objectPath)
    iface = dbus.Interface(obj, "org.freedesktop.DBus.Properties")
    return (iface.Get("org.freedesktop.UDisks2.Drive", "ConnectionBus") == "usb", iface)

all_usb_devices = getAllUnixDevices()

gistfile1.txt

This sxript finds all usb directory, vendor, model, size.But This script can't run all linux distrobution.Maybe instead "org.freedesktoo.UDisks2", "org.freedesktop.UDisks"