code: def unparse(ast, single_line_functions=False):
      s = StringIO()
      UnparseCompilerAst(ast, s, single_line_functions)
      return s.getvalue().lstrip()
  
imports: import sys
  from compiler.ast import Const, Name, Tuple, Div, Mul, Sub, Add
label_desc: Use image node_id 1 for calling a global function with example usage: unparse(ast, single_line_functions) and returns: s