code: def open(self, path, flags):
      logger.debug(f"open {path}")
      matched_path = self.match_path(path)
      if matched_path is None:
          return -errno.ENOENT
      for i in range(1, 10):
          if i not in self.fhs:
              if isinstance(matched_path, str):
                  self.fhs[i] = matched_path
              elif isinstance(matched_path, tuple):
                  self.fhs[i] = matched_path[1]()
              else:
                  return -errno.EFTYPE
              return FileHandle(i)
      return -errno.ENFILE
  
imports: import errno
  import locale
  import logging
  import os
  import stat
  import sys
  import time
  from optparse import Option, OptionParser
  import nibabel
  import nibabel.dft
label_desc: Use image node_id 6 for calling the DICOMFS obj's underlying member method code with example usage: obj.open(path, flags) and returns: unknown, unknown, FileHandle, unknown