code: def test_import_parquet_from_s3_impl():
      aws_creds_prefix = (
          os.environ["AWS_CREDS_PREFIX"]
          if "AWS_CREDS_PREFIX" in os.environ
          else ""
      )
      access_key_id = os.environ[aws_creds_prefix + "AWS_ACCESS_KEY_ID"]
      secret_access_key = os.environ[
          aws_creds_prefix + "AWS_SECRET_ACCESS_KEY"
      ]
  
      assert access_key_id is not None
      assert secret_access_key is not None
      set_s3_credentials(access_key_id, secret_access_key)
  
      from_s3 = h2o.import_file(
          "s3://h2o-public-test-data/smalldata/parser/parquet/airlines-simple.snappy.parquet"
      )
      from_local = h2o.import_file(
          pyunit_utils.locate(
              "smalldata/parser/parquet/airlines-simple.snappy.parquet"
          )
      )
  
      print(from_s3.summary())
  
      assert from_s3.shape == (24421, 12)
      assert_frame_equal(
          from_local.as_data_frame(), from_s3.as_data_frame()
      )
  
imports: import h2o
  import os
  from h2o.persist import set_s3_credentials
  from h2o.persist import remove_s3_credentials
  from tests import pyunit_utils
  from pandas.testing import assert_frame_equal
label_desc: Use image node_id 2 for calling a global function with example usage: test_import_parquet_from_s3_impl() without return types