def OpenBlob(self, blob_key):
    raise NotImplementedError('Storage class must override OpenBlob method.')
Open blob for streaming.
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/api/blobstore/blobstore_stub.py/BlobStorage.OpenBlob