Download image data then upload to Google Cloud Storage - python-2.7

Question

I have a Flask web app that is running on Google AppEngine. The app has a form that my user will use to supply image links. I want to download the image data from the link and then upload it to a Google Cloud Storage bucket.
What I have found so far on Google's documentation tells me to use the 'cloudstorage' client library which I have installed and imported as 'gcs'.
found here: https://cloud.google.com/appengine/docs/python/googlecloudstorageclient/read-write-to-cloud-storage
I think I am not handling the image data correctly through requests. I get a 200 code back from the Cloud Storage upload call but there is no object when I look for it in the console. Here is where I try to retrieve the image and then upload it:
img_resp = requests.get(image_link, stream=True)
objectName = '/myBucket/testObject.jpg'
gcs_file = gcs.open(objectName,
'w',
content_type='image/jpeg')
gcs_file.write(img_resp)
gcs_file.close()
edit:
Here is my updated code to reflect an answer's suggestion:
image_url = urlopen(url)
content_type = image_url.headers['Content-Type']
img_bytes = image_url.read()
image_url.close()
filename = bucketName + objectName
options = {'x-goog-acl': 'public-read',
'Cache-Control': 'private, max-age=0, no-transform'}
with gcs.open(filename,
'w',
content_type=content_type,
options=options) as f:
f.write(img_bytes)
f.close()
However, I am still getting a 201 response on the POST (create file) call and then a 200 on the PUT call but the object never appears in the console.

Answer 1

Try this:
from google.appengine.api import images
import urllib2
image = urllib2.urlopen(image_url)
img_resp = image.read()
image.close()
objectName = '/myBucket/testObject.jpg'
options = {'x-goog-acl': 'public-read',
'Cache-Control': 'private, max-age=0, no-transform'}
with gcs.open(objectName,
'w',
content_type='image/jpeg',
options=options) as f:
f.write(img_resp)
f.close()
And, why restrict them to just entering a url. Why not allow them to upload a local image:
if isinstance(image_or_url, basestring): # should be url
if not image_or_url.startswith('http'):
image_or_url = ''.join([ 'http://', image_or_url])
image = urllib2.urlopen(image_url)
content_type = image.headers['Content-Type']
img_resp = image.read()
image.close()
else:
img_resp = image_or_url.read()
content_type = image_or_url.content_type
If you are running on the development server, the file will be uploaded into your local datastore. Check it at:
http://localhost:<your admin port number>/datastore?kind=__GsFileInfo__
and
http://localhost:<your admin port number>/datastore?kind=__BlobInfo__