TypeError: b'\x00' (b'\x00') != ('\x00')

[CarlFK]

odroid@odroid64:~/ff$ sudo python3 find_firm.py --suffix c2INFO | 2016-08-13 05:13:04 | find_firm | atlys
INFO | 2016-08-13 05:13:04 | find_firm | v0.0.2-81-gd0d3aea-p-a.png no dir
['hdmi2usb-mode-switch', '--mode=jtag']
hdmi2usb-mode-switch --mode=jtag
WARNING:root:unbind-helper not found, will have to run as root!
Using FX2 firmware /usr/local/lib/python3.5/dist-packages/hdmi2usb.modeswitch-0.0.0.post115-py3.5.egg/hdmi2usb/firmware/fx2/atlys/ixo-usb-jtag.hex
Found 1 boards.
0
['hdmi2usb-mode-switch', '--load-gateware', '/home/odroid/HDMI2USB-firmware-prebuilt/archive/master/v0.0.2-81-gd0d3aea/atlys/hdmi2usb/atlys_hdmi2usb-hdmi2usbsoc-atlys.bit']
hdmi2usb-mode-switch --load-gateware /home/odroid/HDMI2USB-firmware-prebuilt/archive/master/v0.0.2-81-gd0d3aea/atlys/hdmi2usb/atlys_hdmi2usb-hdmi2usbsoc-atlys.bit
WARNING:root:unbind-helper not found, will have to run as root!
Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/hdmi2usb.modeswitch-0.0.0.post115-py3.5.egg/hdmi2usb/modeswitch/files.py", line 86, in init
key, value = self.unpack_key(f)
File "/usr/local/lib/python3.5/dist-packages/hdmi2usb.modeswitch-0.0.0.post115-py3.5.egg/hdmi2usb/modeswitch/files.py", line 66, in unpack_key
assert_eq(null, '\x00')
File "/usr/local/lib/python3.5/dist-packages/hdmi2usb.modeswitch-0.0.0.post115-py3.5.egg/hdmi2usb/modeswitch/files.py", line 12, in assert_eq
assert a == b, "%s (%r) != %s (%r)" % (a, a, b, b)
AssertionError: b'\x00' (b'\x00') != ('\x00')

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/bin/hdmi2usb-mode-switch", line 9, in
load_entry_point('hdmi2usb.modeswitch==0.0.0.post115', 'console_scripts', 'hdmi2usb-mode-switch')()
File "/usr/local/lib/python3.5/dist-packages/hdmi2usb.modeswitch-0.0.0.post115-py3.5.egg/hdmi2usb/modeswitch/cli.py", line 260, in main
verbose=args.verbose)
File "/usr/local/lib/python3.5/dist-packages/hdmi2usb.modeswitch-0.0.0.post115-py3.5.egg/hdmi2usb/modeswitch/boards.py", line 149, in load_fpga
xfile = files.XilinxBitFile(filepath)
File "/usr/local/lib/python3.5/dist-packages/hdmi2usb.modeswitch-0.0.0.post115-py3.5.egg/hdmi2usb/modeswitch/files.py", line 101, in init
raise TypeError(e)
TypeError: b'\x00' (b'\x00') != ('\x00')
1
['hdmi2usb-mode-switch', '--load-fx2-firmware', '/home/odroid/HDMI2USB-firmware-prebuilt/archive/master/v0.0.2-81-gd0d3aea/atlys/hdmi2usb/hdmi2usb.hex']
hdmi2usb-mode-switch --load-fx2-firmware /home/odroid/HDMI2USB-firmware-prebuilt/archive/master/v0.0.2-81-gd0d3aea/atlys/hdmi2usb/hdmi2usb.hex
WARNING:root:unbind-helper not found, will have to run as root!
Using FX2 firmware /home/odroid/HDMI2USB-firmware-prebuilt/archive/master/v0.0.2-81-gd0d3aea/atlys/hdmi2usb/hdmi2usb.hex
0
unbind
Traceback (most recent call last):
File "find_firm.py", line 231, in
main()
File "find_firm.py", line 227, in main
test_all( args )
File "find_firm.py", line 184, in test_all
r, dna = test_one(root, f, args.board)
File "find_firm.py", line 131, in test_one
reset_usb(b"0000:00:1a.0")
File "find_firm.py", line 64, in reset_usb
open("/sys/bus/pci/drivers/ehci-pci/unbind",'wb').write(dev_id)
FileNotFoundError: [Errno 2] No such file or directory: '/sys/bus/pci/drivers/ehci-pci/unbind'

[CarlFK]

carl@twist:$ python2 -c "print( b'\x00' == '\x00' )"
True
carl@twist:$ python3 -c "print( b'\x00' == '\x00' )"
False