class_docstr: Store variable that save only Literals (with no construction cost)
class_docstr_tok: ["Store","variable","that","save","only","Literals","(","with","no","construction","cost",")"]
code: def visit_Assign(self, node):
      # list, dict, set and other are not considered as Literals as they have
      # a constructor which may be costly and they can be updated using
      # function call
      if isinstance(node.value, (ast.Constant, ast.Lambda)):
          targets = [
              target
              for target in node.targets
              if isinstance(target, ast.Name)
          ]
          self.result.update(targets)
  
imports: from pythran.passmanager import FunctionAnalysis
  import gast
label_desc: Use image node_id 2 for calling the Literals obj's underlying member method code with example usage: obj.visit_Assign(node) without return types