docstr: Return a view object containing the names of symbols in the table.
          
code: def get_identifiers(self):
      """Return a view object containing the names of symbols in the table."""
      return self._table.symbols.keys()
  
imports: import _symtable
  from _symtable import USE, DEF_GLOBAL, DEF_NONLOCAL, DEF_LOCAL, DEF_PARAM, DEF_IMPORT, DEF_BOUND, DEF_ANNOT, SCOPE_OFF, SCOPE_MASK, FREE, LOCAL, GLOBAL_IMPLICIT, GLOBAL_EXPLICIT, CELL
  import weakref
label_desc: Use image node_id 10 for calling the SymbolTable obj's underlying member method code with example usage: obj.get_identifiers() and returns: self