nxid "underlying buffer has been detached" error with check_ezid

[ngeraci]

When I run nxid in a Python 3 environment on an item that already has an ARK, I'm getting the following error:
(Expected output is ℹ noop update)

  File "/home/noah/miniconda3/bin/nxid", line 10, in <module>
    sys.exit(main())
  File "/home/noah/miniconda3/lib/python3.7/site-packages/pynux/nxid.py", line 155, in main
    print('ℹ noop update "{}" {} {}'.format(path, ark, owner))
ValueError: underlying buffer has been detached
Exception ignored in: <_io.TextIOWrapper mode='w' encoding='UTF-8'>
ValueError: underlying buffer has been detached

It looks like this may have to do with the stdout stuff in the check_ezid function that gets called if ARK is not none:

pynux/pynux/nxid.py

Lines 167 to 175 in 92f813f

	def check_ezid(ark, ezid):
	''' check to see if the ARK is listed in EZID, returns raw ERC or `None`'''
	try:
	sys.stdout = open(os.devnull, 'w')
	return ezid.view(ark)
	except HTTPError:
	return None
	finally:
	sys.stdout = sys.__stdout__

This doesn't affect the ability to mint new ARKs for items with no ARK, which is my main day to day use case, so it's not a big priority on my end.