code: def sub():
      return ast.BinOp(Placeholder(0), ast.Pow(), Placeholder(1))
  
imports: from pythran.conversion import mangle
  from pythran.analyses import Check, Placeholder, AST_or
  from pythran.passmanager import Transformation
  from copy import deepcopy
  import gast
  from inspect import isclass
label_desc: Use image node_id 1 for calling the PowFuncPattern obj's underlying member method code with example usage: obj.sub() and returns: ast