Comment 6 for bug 1860405

Please elaborate.

$ pip install boto3

$ pip show boto3
Name: boto3
Version: 1.11.12

# duplicity --s3-european-buckets --s3-use-new-style -v 4 --archive-dir=/root/duptest --full-if-older-than 14D test "boto3+s3://mybucket/private/backups/database/test"

BackendException: Could not initialize backend: No module named 'boto3'