Suggestion: List buckets

[KonsKo]

There is hard dependency in next function from field CreationDate

def subcmd_all_buckets_list(s3):

    response = s3.list_all_buckets()

    for bucket in sorted(response["list"], key=lambda b:b["Name"]):
        output(u"%s  s3://%s" % (formatDateTime(bucket["CreationDate"]),  <----------
                                 bucket["Name"]))

By the docs, field is not required https://docs.aws.amazon.com/AmazonS3/latest/API/API_Bucket.html

I had problem with such field with NOT AWS S3 (my custom server).

Also, I believe, there is no reason for such hard dependency.

Suggestion:

def subcmd_all_buckets_list(s3):

    response = s3.list_all_buckets()

    for bucket in sorted(response["list"], key=lambda b:b["Name"]):
        output(
            u"%s  s3://%s" % (
                formatDateTime(
                    bucket.get("CreationDate", "<default value>"),  <----------
                ),
                bucket["Name"],
            ),
        )