class_docstr: Yields the set of pure expressions
class_docstr_tok: ["Yields","the","set","of","pure","expressions"]
code: def __init__(self):
      self.result = set()
      super(PureExpressions, self).__init__(
          ArgumentEffects, GlobalEffects, Aliases, PureFunctions
      )
  
file_path: pythran/pythran/analyses/pure_expressions.py
imports: from pythran.analyses.aliases import Aliases
  from pythran.analyses.argument_effects import ArgumentEffects
  from pythran.analyses.global_effects import GlobalEffects
  from pythran.analyses.pure_functions import PureFunctions
  from pythran.passmanager import ModuleAnalysis
  from pythran.intrinsic import Intrinsic
  import gast
label_desc: Use image node_id 1 to create a new PureExpressions object from inherited base classes: ModuleAnalysis with example: obj = PureExpressions()