code: def export_gzip():
      prostate = h2o.import_file(
          pyunit_utils.locate("smalldata/prostate/prostate.csv")
      )
      target = path.join(
          pyunit_utils.locate("results"), "prostate_export.csv.gzip"
      )
      h2o.export_file(prostate, target, compression="gzip")
  
      assert is_gzip_file(target)
  
      prostate_gzip = h2o.import_file(target)
  
      assert pyunit_utils.compare_frames(
          prostate, prostate_gzip, numElements=2
      )
  
imports: import sys
  import h2o
  from tests import pyunit_utils
  from os import path
  import binascii
label_desc: Use image node_id 2 for calling a global function with example usage: export_gzip() without return types