class_docstr: Identify constant expressions.
class_docstr_tok: ["Identify","constant","expressions","."]
code: def __init__(self):
      self.result = set()
      super(ConstantExpressions, self).__init__(
          Globals, Locals, Aliases, PureFunctions
      )
  
imports: from pythran.analyses.aliases import Aliases
  from pythran.analyses.globals_analysis import Globals
  from pythran.analyses.locals_analysis import Locals
  from pythran.analyses.pure_functions import PureFunctions
  from pythran.intrinsic import FunctionIntr
  from pythran.passmanager import NodeAnalysis
  import gast
label_desc: Use image node_id 1 to create a new ConstantExpressions object from inherited base classes: NodeAnalysis with example: obj = ConstantExpressions()