code: def colname_set_basic():
      print("Uploading iris data...")
  
      no_headers = h2o.upload_file(
          pyunit_utils.locate("smalldata/iris/iris.csv")
      )
      headers_and = h2o.upload_file(
          pyunit_utils.locate("smalldata/iris/iris_header.csv")
      )
  
      print(no_headers.names)
      print(headers_and.names)
  
      no_headers.set_names(headers_and.names)
      assert (
          no_headers.names == headers_and.names
      ), "Expected the same column names but got {0} and {1}".format(
          no_headers.names, headers_and.names
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: colname_set_basic() without return types