__exit__ without further info when downloading gzipped file

[deepdad]

def download_blob(bucket_name, source_blob_name, destination_file_name):
#Downloads a blob from the bucket.
storage_client = storage.Client()
bucket = storage_client.get_bucket(bucket_name)
blob = bucket.blob(source_blob_name)
print(bucket.exists(client=storage_client))
print(bucket.get_blob(blob_name=source_blob_name))
with open(destination_file_name, 'wb') as file_obj:
blob.download_to_file(file_obj=file_obj)
#blob.download_to_filename(destination_file_name)

print('Blob {} downloaded to {}.'.format(
    source_blob_name,
    destination_file_name))

download_blob('test-ml-storage', 'deepdad/sample.tar.gz', './sample.tar.gz')

AttributeErrorTraceback (most recent call last)
in ()
20 destination_file_name))
21
---> 22 download_blob('test-ml-storage', 'deepdad/sample.tar.gz', './sample.tar.gz')

in download_blob(bucket_name, source_blob_name, destination_file_name)
13 print(bucket.get_blob(blob_name=source_blob_name))
14 with open(destination_file_name, 'wb') as file_obj:
---> 15 blob.download_to_file(file_obj=file_obj)
16 #blob.download_to_filename(destination_file_name)
17

/opt/conda/envs/py27/lib/python2.7/site-packages/google/cloud/storage/blob.pyc in download_to_file(self, file_obj, client)
462
463 try:
--> 464 self._do_download(transport, file_obj, download_url, headers)
465 except resumable_media.InvalidResponse as exc:
466 _raise_from_invalid_response(exc)

/opt/conda/envs/py27/lib/python2.7/site-packages/google/cloud/storage/blob.pyc in _do_download(self, transport, file_obj, download_url, headers)
416 if self.chunk_size is None:
417 download = Download(download_url, stream=file_obj, headers=headers)
--> 418 download.consume(transport)
419 else:
420 download = ChunkedDownload(

/opt/conda/envs/py27/lib/python2.7/site-packages/google/resumable_media/requests/download.pyc in consume(self, transport)
99
100 if self._stream is not None:
--> 101 self._write_to_stream(result)
102
103 return result

/opt/conda/envs/py27/lib/python2.7/site-packages/google/resumable_media/requests/download.pyc in _write_to_stream(self, response)
60 response (~requests.Response): The HTTP response object.
61 """
---> 62 with response:
63 body_iter = response.iter_content(
64 chunk_size=_SINGLE_GET_CHUNK_SIZE, decode_unicode=False)

AttributeError: exit

[dhermes]

@deepdad Sorry this issue occurred for you. See #3841 for an explanation of why it's happening.

Simply upgrade to requests >= 0.18.0 and the error will be resolved.

[deepdad]

#3841 has no explanation and requests is up to date

​import requests
print (requests.version)

2.14.2

[dhermes]

Sorry, I mistyped, the minimum version is 2.18.0, not 0.18.0. "Up-to-date" would be the latest version on PyPI right now (2.18.4).

Sorry for the lack of information in #3841, I had to click my way through to find the real issue (#3736).

The issue is caused by using a requests.Response object as a context manager.

[deepdad]

thank you