code: def update_stable_lhs(self, symbols):
      new_symbols = symbols - self._stable_lhs
  
      if self.seen_break:
          self._cond_lhs.update(new_symbols)
      else:
          self._cond_lhs -= new_symbols
          self._stable_lhs.update(new_symbols)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  from ..visitors import Visitor, visit_children
  from ..visitors.symbol_visitor import get_symbols
  import ast
  from ...utils import py2op
label_desc: Use image node_id 3 for calling the ConditionalSymbolVisitor obj's underlying member method code with example usage: obj.update_stable_lhs(symbols) without return types