old_contents: #!/usr/bin/env python
  
  # Copyright 2020 Google Inc. All Rights Reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the 'License');
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import sys
  
  # [START storage_set_metadata]
  from google.cloud import storage
  
  
  def set_blob_metadata(bucket_name, blob_name):
      """Set a blob's metadata."""
      # bucket_name = 'your-bucket-name'
      # blob_name = 'your-object-name'
  
      storage_client = storage.Client()
      bucket = storage_client.bucket(bucket_name)
      blob = bucket.get_blob(blob_name)
      metadata = {'color': 'Red', 'name': 'Test'}
      blob.metadata = metadata
  
      print("The metadata for the blob {} is {}".format(blob.name, blob.metadata))
  
  
  # [END storage_set_metadata]
  
  if __name__ == "__main__":
      set_blob_metadata(bucket_name=sys.argv[1], blob_name=sys.argv[2])
  
new_contents: #!/usr/bin/env python
  
  # Copyright 2020 Google Inc. All Rights Reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the 'License');
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import sys
  
  # [START storage_set_metadata]
  from google.cloud import storage
  
  
  def set_blob_metadata(bucket_name, blob_name):
      """Set a blob's metadata."""
      # bucket_name = 'your-bucket-name'
      # blob_name = 'your-object-name'
  
      storage_client = storage.Client()
      bucket = storage_client.bucket(bucket_name)
      blob = bucket.get_blob(blob_name)
      metadata = {'color': 'Red', 'name': 'Test'}
      blob.metadata = metadata
      blob.patch()
  
      print("The metadata for the blob {} is {}".format(blob.name, blob.metadata))
  
  
  # [END storage_set_metadata]
  
  if __name__ == "__main__":
      set_blob_metadata(bucket_name=sys.argv[1], blob_name=sys.argv[2])
  
subject: Add patch call (#5013)