Image file type is not supported when downloading using urllib3

Question

hi I am downloading image like this

import urllib3     

http = urllib3.PoolManager()
r = http.request('GET', 'https://i.picsum.photos/id/192/536/354.png?hmac=a22QkdSZ7zXUHpV4-gnB48PPYaLlcvaTMeDXxcPRxs8')
print(r.data)

then uploading it to s3 using this

 s3 = boto3.resource(s3')
    key = 'file_name + '.png'    
    bucket = s3.Bucket(bucket_name)
    bucket.upload_fileobj(io.BytesIO(r.data), key) 

but when I open I get error on image opening "File type is not supported " when I open using photo opener

**EDIT:** I did as suggested by passing
 ContentType='text/png' 

and when I opening image by url getting this on aws : I opened this using presinged url

Answer 1

You did not actually mention how you add the ContentType. This is working example, using boto3.resource()

bucketname = <my-bucket>
filename   = <filename>

s3 = boto3.resource('s3')
key = 'image.png'
bucket = s3.Bucket(bucketname)
with open(filename, "rb") as fd:
    bucket.upload_fileobj(
        fd,
        Key=key,
        ExtraArgs={
            "ContentType": "image/png",
        }
    )

I then generate a pre-signed URL (which you didn't include, but as long as you get the permissions right, I'm sure you're fine)

expiration = 3600
s3 = boto3.client('s3',
                  region_name='us-east-2',
                  config=boto3.session.Config(signature_version='s3v4'))
response = s3.generate_presigned_url(
    'get_object',
    Params={
        'Bucket': bucketname,
        'Key': key
    },
    ExpiresIn=expiration
)
print(response)

Opening the resulting URL in my browser, it loads the PNG image that I uploaded.