code: def test_right_to_left():
      assert is_right_to_left("ar")
      assert is_right_to_left("Arabic")
  
      assert not is_right_to_left("en")
      assert not is_right_to_left("English")
  
file_path: stanza/stanza/tests/common/test_constant.py
imports: import tempfile
  import pytest
  import stanza
  from stanza.models.common.constant import treebank_to_short_name, lang_to_langcode, is_right_to_left, two_to_three_letters, langlower2lcode
  from stanza.tests import *
label_desc: Use image node_id 3 for calling a global function with example usage: test_right_to_left() without return types