code: def S_ISBLK(mode):
      """Return True if mode is from a block special device file."""
      return S_IFMT(mode) == S_IFBLK
  
file_path: catboost/contrib/tools/python3/src/Lib/stat.py
label_desc: Use image node_id 5 for calling a global function with example usage: S_ISBLK(mode) and returns: unknown