from werkzeug import secure_filename

@user_api.route('upload-profile-photo', methods=['PUT'])
@Auth.auth_required
def upload_profile_photo():
    """
    Upload User Profile Photo
    """
    key = Auth.auth_user()
    bucket = 'profile-photos'
    content_type = request.mimetype
    image_file = request.files['file']

    client = boto3.client('s3',
                          region_name='sfo2',
                          endpoint_url='https://example.xxx.amazonaws.com',
                          aws_access_key_id=os.environ['ACCESS_KEY'],
                          aws_secret_access_key=os.environ['SECRET_KEY'])

    filename = secure_filename(image_file.filename)  # This is convenient to validate your filename, otherwise just use file.filename

    client.put_object(Body=image_file,
                      Bucket=bucket,
                      Key=filename,
                      ContentType=content_type)

    return custom_response({'message': 'image uploaded'}, 200)