code: def visit_binop(self, node):
          
          left = self._precedence_parens(node, node.left)
          right = self._precedence_parens(node, node.right, is_left=False)
          if node.op == "**":
              return "%s%s%s" % (left, node.op, right)
  
          return "%s %s %s" % (left, node.op, right)
docs: return an astroid.BinOp node as string