code: def _parse_vertex_tuple(s):
      """Parse vertex indices in '/' separated form (like 'i/j/k', 'i//k' ...)."""
      vt = [0, 0, 0]
      for i, c in enumerate(s.split("/")):
          if c:
              vt[i] = int(c)
      return tuple(vt)
  
file_path: lucid/lucid/misc/gl/meshutil.py
imports: from builtins import str
  from collections import OrderedDict
  import numpy
label_desc: Use image node_id 8 for calling a global function with example usage: _parse_vertex_tuple(s) and returns: tuple