Python errno.ENODEV Examples

def play_sound_file(path):
    fp = open(path, 'r')
    size, enc, rate, nchannels, extra = sunaudio.gethdr(fp)
    data = fp.read()
    fp.close()

    if enc != SND_FORMAT_MULAW_8:
        print "Expect .au file with 8-bit mu-law samples"
        return

    try:
        a = linuxaudiodev.open('w')
    except linuxaudiodev.error, msg:
        if msg[0] in (errno.EACCES, errno.ENOENT, errno.ENODEV, errno.EBUSY):
            raise TestSkipped, msg
        raise TestFailed, msg

    # convert the data to 16-bit signed 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext_posix.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            if hasattr(_common, 'NicDuplex'):
                duplex = _common.NicDuplex(duplex)
            ret[name] = _common.snicstats(isup, duplex, speed, mtu)
    return ret


# =====================================================================
# --- other system functions
# ===================================================================== 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    duplex_map = {cext.DUPLEX_FULL: NIC_DUPLEX_FULL,
                  cext.DUPLEX_HALF: NIC_DUPLEX_HALF,
                  cext.DUPLEX_UNKNOWN: NIC_DUPLEX_UNKNOWN}
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            ret[name] = _common.snicstats(isup, duplex_map[duplex], speed, mtu)
    return ret


# =====================================================================
# --- disks
# ===================================================================== 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    duplex_map = {cext.DUPLEX_FULL: NIC_DUPLEX_FULL,
                  cext.DUPLEX_HALF: NIC_DUPLEX_HALF,
                  cext.DUPLEX_UNKNOWN: NIC_DUPLEX_UNKNOWN}
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            ret[name] = _common.snicstats(isup, duplex_map[duplex], speed, mtu)
    return ret


# =====================================================================
# --- disks
# ===================================================================== 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext_posix.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            if hasattr(_common, 'NicDuplex'):
                duplex = _common.NicDuplex(duplex)
            ret[name] = _common.snicstats(isup, duplex, speed, mtu)
    return ret 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext_posix.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            if hasattr(_common, 'NicDuplex'):
                duplex = _common.NicDuplex(duplex)
            ret[name] = _common.snicstats(isup, duplex, speed, mtu)
    return ret 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext_posix.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            if hasattr(_common, 'NicDuplex'):
                duplex = _common.NicDuplex(duplex)
            ret[name] = _common.snicstats(isup, duplex, speed, mtu)
    return ret


# =====================================================================
# --- other system functions
# ===================================================================== 

def test_init_sam_cfg_rsp_err(self, mocker, transport):  # noqa: F811
        mocker.patch('nfc.clf.pn532.Device.__init__').return_value = None
        sys.platform = ""

        transport.write.return_value = None
        transport.read.side_effect = [
            ACK(), RSP('03 32010607'),                    # GetFirmwareVersion
            ACK(), ERR(),                                 # SAMConfiguration
        ]
        with pytest.raises(IOError) as excinfo:
            nfc.clf.pn532.init(transport)
        assert excinfo.value.errno == errno.ENODEV
        assert transport.write.mock_calls == [call(_) for _ in [
            HEX(10 * '00') + CMD('02'),                   # GetFirmwareVersion
            HEX(10 * '00') + CMD('14 010000'),            # SAMConfiguration
        ]] 

def test_init_sam_cfg_ack_err(self, mocker, transport):  # noqa: F811
        mocker.patch('nfc.clf.pn532.Device.__init__').return_value = None
        sys.platform = ""

        transport.write.return_value = None
        transport.read.side_effect = [
            ACK(), RSP('03 32010607'),                    # GetFirmwareVersion
            ERR(),                                        # SAMConfiguration
        ]
        with pytest.raises(IOError) as excinfo:
            nfc.clf.pn532.init(transport)
        assert excinfo.value.errno == errno.ENODEV
        assert transport.write.mock_calls == [call(_) for _ in [
            HEX(10 * '00') + CMD('02'),                   # GetFirmwareVersion
            HEX(10 * '00') + CMD('14 010000'),            # SAMConfiguration
        ]] 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext_posix.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            if hasattr(_common, 'NicDuplex'):
                duplex = _common.NicDuplex(duplex)
            ret[name] = _common.snicstats(isup, duplex, speed, mtu)
    return ret 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    duplex_map = {cext.DUPLEX_FULL: NIC_DUPLEX_FULL,
                  cext.DUPLEX_HALF: NIC_DUPLEX_HALF,
                  cext.DUPLEX_UNKNOWN: NIC_DUPLEX_UNKNOWN}
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            ret[name] = _common.snicstats(isup, duplex_map[duplex], speed, mtu)
    return ret


# =====================================================================
# --- disks
# ===================================================================== 

def read(self, timeout=0):
        if self.usb_inp is not None:
            try:
                ep_addr = self.usb_inp.getAddress()
                frame = self.usb_dev.bulkRead(ep_addr, 300, timeout)
            except libusb.USBErrorTimeout:
                raise IOError(errno.ETIMEDOUT, os.strerror(errno.ETIMEDOUT))
            except libusb.USBErrorNoDevice:
                raise IOError(errno.ENODEV, os.strerror(errno.ENODEV))
            except libusb.USBError as error:
                log.error("%r", error)
                raise IOError(errno.EIO, os.strerror(errno.EIO))

            if len(frame) == 0:
                log.error("bulk read returned zero data")
                raise IOError(errno.EIO, os.strerror(errno.EIO))

            frame = bytearray(frame)
            log.log(logging.DEBUG-1, "<<< %s", hexlify(frame).decode())
            return frame 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext_posix.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            if hasattr(_common, 'NicDuplex'):
                duplex = _common.NicDuplex(duplex)
            ret[name] = _common.snicstats(isup, duplex, speed, mtu)
    return ret


# =====================================================================
# --- other system functions
# ===================================================================== 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext_posix.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            if hasattr(_common, 'NicDuplex'):
                duplex = _common.NicDuplex(duplex)
            ret[name] = _common.snicstats(isup, duplex, speed, mtu)
    return ret 

def get_interface_mac(sock: socket.socket, ifname: str) -> str:
    """Obtain a network interface's MAC address, as a string."""
    ifreq = struct.pack(b"256s", ifname.encode("utf-8")[:15])
    try:
        info = fcntl.ioctl(sock.fileno(), SIOCGIFHWADDR, ifreq)
    except OSError as e:
        if e.errno is not None and e.errno == errno.ENODEV:
            raise InterfaceNotFound("Interface not found: '%s'." % ifname)
        else:
            raise MACAddressNotAvailable(
                "Failed to get MAC address for '%s': %s."
                % (ifname, strerror(e.errno))
            )
    else:
        # Of course we're sure these are the correct indexes into the `ifreq`.
        # Also, your lack of faith is disturbing.
        mac = "".join("%02x:" % char for char in info[18:24])[:-1]
    return mac 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    duplex_map = {cext.DUPLEX_FULL: NIC_DUPLEX_FULL,
                  cext.DUPLEX_HALF: NIC_DUPLEX_HALF,
                  cext.DUPLEX_UNKNOWN: NIC_DUPLEX_UNKNOWN}
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            ret[name] = _common.snicstats(isup, duplex_map[duplex], speed, mtu)
    return ret


# =====================================================================
# --- disks
# ===================================================================== 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext_posix.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            if hasattr(_common, 'NicDuplex'):
                duplex = _common.NicDuplex(duplex)
            ret[name] = _common.snicstats(isup, duplex, speed, mtu)
    return ret 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    duplex_map = {cext.DUPLEX_FULL: NIC_DUPLEX_FULL,
                  cext.DUPLEX_HALF: NIC_DUPLEX_HALF,
                  cext.DUPLEX_UNKNOWN: NIC_DUPLEX_UNKNOWN}
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            ret[name] = _common.snicstats(isup, duplex_map[duplex], speed, mtu)
    return ret


# =====================================================================
# --- disks
# ===================================================================== 

def net_if_stats():
    """Get NIC stats (isup, duplex, speed, mtu)."""
    names = net_io_counters().keys()
    ret = {}
    for name in names:
        try:
            mtu = cext_posix.net_if_mtu(name)
            isup = cext_posix.net_if_flags(name)
            duplex, speed = cext_posix.net_if_duplex_speed(name)
        except OSError as err:
            # https://github.com/giampaolo/psutil/issues/1279
            if err.errno != errno.ENODEV:
                raise
        else:
            if hasattr(_common, 'NicDuplex'):
                duplex = _common.NicDuplex(duplex)
            ret[name] = _common.snicstats(isup, duplex, speed, mtu)
    return ret


# =====================================================================
# --- other system functions
# ===================================================================== 

def test_main():
    try:
        dsp = linuxaudiodev.open('w')
    except linuxaudiodev.error, msg:
        if msg.args[0] in (errno.EACCES, errno.ENOENT, errno.ENODEV, errno.EBUSY):
            raise unittest.SkipTest(msg)
        raise 

def get_interface_ip(sock: socket.socket, ifname: str) -> str:
    """Obtain an IP address for a network interface, as a string."""
    ifreq_tuple = (ifname.encode("utf-8")[:15], socket.AF_INET, b"\x00" * 14)
    ifreq = struct.pack(b"16sH14s", *ifreq_tuple)
    try:
        info = fcntl.ioctl(sock, SIOCGIFADDR, ifreq)
    except OSError as e:
        if e.errno == errno.ENODEV:
            raise InterfaceNotFound("Interface not found: '%s'." % ifname)
        elif e.errno == errno.EADDRNOTAVAIL:
            raise IPAddressNotAvailable(
                "No IP address found on interface '%s'." % ifname
            )
        else:
            raise IPAddressNotAvailable(
                "Failed to get IP address for '%s': %s."
                % (ifname, strerror(e.errno))
            )
    else:
        (  # Parse the `struct ifreq` that comes back from the ioctl() call.
            #     16x --> char ifr_name[IFNAMSIZ];
            # ... next is a union of structures; we're interested in the
            # `sockaddr_in` that is returned from this particular ioctl().
            #     2x  --> short sin_family;
            #     2x  --> unsigned short sin_port;
            #     4s  --> struct in_addr sin_addr;
            #     8x  --> char sin_zero[8];
            addr,
        ) = struct.unpack(b"16x2x2x4s8x", info)
        ip = socket.inet_ntoa(addr)
    return ip 

def open(self, filename, *args, **kwargs):
        """
        Attempt an open, but if the file is /dev/net/tun and it does not exist,
        translate the error into L{SkipTest} so that tests that require
        platform support for tuntap devices are skipped instead of failed.
        """
        try:
            return super(TestRealSystem, self).open(filename, *args, **kwargs)
        except OSError as e:
            # The device file may simply be missing.  The device file may also
            # exist but be unsupported by the kernel.
            if e.errno in (ENOENT, ENODEV) and filename == b"/dev/net/tun":
                raise SkipTest("Platform lacks /dev/net/tun")
            raise 

def test_main():
    try:
        dsp = ossaudiodev.open('w')
    except (ossaudiodev.error, IOError), msg:
        if msg.args[0] in (errno.EACCES, errno.ENOENT,
                           errno.ENODEV, errno.EBUSY):
            raise unittest.SkipTest(msg)
        raise 

def play_sound_file(self, data, rate, ssize, nchannels):
        try:
            dsp = ossaudiodev.open('w')
        except IOError, msg:
            if msg.args[0] in (errno.EACCES, errno.ENOENT,
                               errno.ENODEV, errno.EBUSY):
                raise unittest.SkipTest(msg)
            raise

        # at least check that these methods can be invoked 

def play_sound_file(self, data, rate, ssize, nchannels):
        try:
            dsp = ossaudiodev.open('w')
        except IOError, msg:
            if msg.args[0] in (errno.EACCES, errno.ENOENT,
                               errno.ENODEV, errno.EBUSY):
                raise unittest.SkipTest(msg)
            raise

        # at least check that these methods can be invoked 

def test_main():
    try:
        dsp = ossaudiodev.open('w')
    except (ossaudiodev.error, IOError), msg:
        if msg.args[0] in (errno.EACCES, errno.ENOENT,
                           errno.ENODEV, errno.EBUSY):
            raise unittest.SkipTest(msg)
        raise 

def test_main():
    try:
        dsp = ossaudiodev.open('w')
    except (ossaudiodev.error, OSError) as msg:
        if msg.args[0] in (errno.EACCES, errno.ENOENT,
                           errno.ENODEV, errno.EBUSY):
            raise unittest.SkipTest(msg)
        raise
    dsp.close()
    support.run_unittest(__name__) 

def test_main():
    try:
        dsp = ossaudiodev.open('w')
    except (ossaudiodev.error, OSError) as msg:
        if msg.args[0] in (errno.EACCES, errno.ENOENT,
                           errno.ENODEV, errno.EBUSY):
            raise unittest.SkipTest(msg)
        raise
    dsp.close()
    support.run_unittest(__name__) 

def test_main():
    try:
        dsp = ossaudiodev.open('w')
    except (ossaudiodev.error, OSError) as msg:
        if msg.args[0] in (errno.EACCES, errno.ENOENT,
                           errno.ENODEV, errno.EBUSY):
            raise unittest.SkipTest(msg)
        raise
    dsp.close()
    support.run_unittest(__name__) 

def test_main():
    try:
        dsp = linuxaudiodev.open('w')
    except linuxaudiodev.error, msg:
        if msg.args[0] in (errno.EACCES, errno.ENOENT, errno.ENODEV, errno.EBUSY):
            raise unittest.SkipTest(msg)
        raise