code: def compile_regex(regex):
      if not isinstance(regex, str):
          regex = "|".join(["(" + r + ")" for r in regex])
      return re.compile(regex)
  
imports: import collections
  from collections.abc import Sequence
  import itertools
  import re
  import types
  from typing import Any, Callable
  from absl.testing import absltest
  from absl.testing import parameterized
  from haiku._src import basic
  from haiku._src import data_structures
  from haiku._src import filtering
  from haiku._src import transform
  import jax
  import jax.numpy
label_desc: Use image node_id 5 for calling a global function with example usage: compile_regex(regex) and returns: re