input_file = list(arvados.CollectionReader(this_task_input).all_files())[0]
out = arvados.CollectionWriter()
out.set_current_file_name(input_file.decompressed_name())
out.set_current_stream_name(input_file.stream_name())
for line in input_file.readlines():
input_file = list(arvados.CollectionReader(this_task_input).all_files())[0]
out = arvados.CollectionWriter()
out.set_current_file_name(input_file.decompressed_name())
out.set_current_stream_name(input_file.stream_name())
for line in input_file.readlines():