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What is the path to a Virtual Memory file created in python?

I'm trying to create a virtual XML file, copy some content to it, then access throw parsing, it may be simple, but every path that I'm trying to use ( like 'mem://mem_test.xml' or '{}'.format(mem_file) ) are not working... What path should I use to access a file in the Virtual Memory?
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  1.     import fs
  2.     import xml.etree.ElementTree as Et
  3.  
  4.     mem_fs = fs.open_fs('mem://')
  5.     os_fs = fs.open_fs(".")
  6.     mem_file = mem_fs.open('mem_test.xml', 'rw')
  7.     fs.copy.copy_file(os_fs, 'test.xml', mem_fs, 'mem_test.xml')
  8.     tree = Et.parse('[string with path to mem_test]')
  9.     root = tree.getroot()
  10.  
4 Weeks Ago #1
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