code: def _get_mtab():
      if os.path.exists("/etc/mtab"):
          with open("/etc/mtab") as afile:
              data = afile.read()
          return [line.split(" ") for line in data.split("\n") if line]
      return []
  
imports: import collections
  import functools
  import math
  import os
  import re
  import sys
  import yatest_lib.tools
label_desc: Use image node_id 2 for calling a global function with example usage: _get_mtab() and returns: list, unknown