Use tf.app.run in gcs_smoke, so that the flags are explicitly parsed, instead of parsed when first accessed.

PiperOrigin-RevId: 173702828

tensorflow/tools/gcs_test/python/gcs_smoke.py

@@ -35,6 +35,7 @@ flags.DEFINE_integer("num_examples", 10, "Number of examples to generate")
 
 FLAGS = flags.FLAGS
 
+
 def create_examples(num_examples, input_mean):
   """Create ExampleProto's containing data."""
   ids = np.arange(num_examples).reshape([num_examples, 1])
@@ -49,6 +50,7 @@ def create_examples(num_examples, input_mean):
     examples.append(ex)
   return examples
 
+
 def create_dir_test():
   """Verifies file_io directory handling methods."""
 
@@ -122,6 +124,7 @@ def create_dir_test():
   print("Deleted directory recursively %s in %s milliseconds" % (
       dir_name, elapsed_ms))
 
+
 def create_object_test():
   """Verifies file_io's object manipulation methods ."""
   starttime_ms = int(round(time.time() * 1000))
@@ -142,7 +145,8 @@ def create_object_test():
     print("Creating file %s." % file_name)
     file_io.write_string_to_file(file_name, "test file creation.")
   elapsed_ms = int(round(time.time() * 1000)) - starttime_ms
-  print("Created %d files in %s milliseconds" % (len(files_to_create), elapsed_ms))
+  print("Created %d files in %s milliseconds" % (
+      len(files_to_create), elapsed_ms))
 
   # Listing files of pattern1.
   list_files_pattern = "%s/test_file*.txt" % dir_name
@@ -185,7 +189,9 @@ def create_object_test():
   file_io.delete_recursively(dir_name)
 
 
-if __name__ == "__main__":
+def main(argv):
+  del argv  # Unused.
+
   # Sanity check on the GCS bucket URL.
   if not FLAGS.gcs_bucket_url or not FLAGS.gcs_bucket_url.startswith("gs://"):
     print("ERROR: Invalid GCS bucket URL: \"%s\"" % FLAGS.gcs_bucket_url)
@@ -210,7 +216,7 @@ if __name__ == "__main__":
   # tf_record_iterator works.
   record_iter = tf.python_io.tf_record_iterator(input_path)
   read_count = 0
-  for r in record_iter:
+  for _ in record_iter:
     read_count += 1
   print("Read %d records using tf_record_iterator" % read_count)
 
@@ -222,7 +228,7 @@ if __name__ == "__main__":
 
   # Verify that running the read op in a session works.
   print("\n=== Testing TFRecordReader.read op in a session... ===")
-  with tf.Graph().as_default() as g:
+  with tf.Graph().as_default():
     filename_queue = tf.train.string_input_producer([input_path], num_epochs=1)
     reader = tf.TFRecordReader()
     _, serialized_example = reader.read(filename_queue)
@@ -249,3 +255,7 @@ if __name__ == "__main__":
 
   create_dir_test()
   create_object_test()
+
+
+if __name__ == "__main__":
+  tf.app.run(main)