code: def __init__(self, raw_table, filename):
      self._table = raw_table
      self._filename = filename
      self._symbols = {}
  
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 1 to create a new SymbolTable object  with example: obj = SymbolTable(raw_table, filename)