code: def main(argv):
      if len(argv) > 1:
          raise tf.app.UsageError("Too many command-line arguments.")
  
      db = lmdb.open(FLAGS.output_file)
      with db.begin(write=True) as txn:
          for index, path in enumerate(FLAGS.input_files.split(",")):
              data = tf.io.gfile.GFile(path, "rb").read()
              txn.put(str(index), data)
  
imports: from absl import app
  from absl import flags
  import lmdb
  from tensorflow_datasets.core.utils.lazy_imports_utils import tensorflow
label_desc: Use image node_id 1 for calling a global function with example usage: main(argv) without return types