code: def exec_stmt_handle(self, tokens):
          
          internal_assert(1 <= len(tokens) <= 3, "invalid exec statement tokens", tokens)
          if self.target.startswith("2"):
              out = "exec " + tokens[0]
              if len(tokens) > 1:
                  out += " in " + ", ".join(tokens[1:])
              return out
          else:
              return "exec(" + ", ".join(tokens) + ")"
docs: Process Python-3-style exec statements.