Boto3 get only S3 buckets of specific region

问题

The following code sadly lists all buckets of all regions and not only from "eu-west-1" as specified. How can I change that?

import boto3

s3 = boto3.client("s3", region_name="eu-west-1")

for bucket in s3.list_buckets()["Buckets"]:

    bucket_name = bucket["Name"]
    print(bucket["Name"])

回答1:

s3 = boto3.client("s3", region_name="eu-west-1")

connects to S3 API endpoint in eu-west-1. It doesn't limit the listing to eu-west-1 buckets. One solution is to query the bucket location and filter.

s3 = boto3.client("s3")

for bucket in s3.list_buckets()["Buckets"]:
    if s3.get_bucket_location(Bucket=bucket['Name'])['LocationConstraint'] == 'eu-west-1':
        print(bucket["Name"])

If you need a one liner using Python's list comprehension:

region_buckets = [bucket["Name"] for bucket in s3.list_buckets()["Buckets"] if s3.get_bucket_location(Bucket=bucket['Name'])['LocationConstraint'] == 'eu-west-1']
print(region_buckets)

来源：https://stackoverflow.com/questions/49814173/boto3-get-only-s3-buckets-of-specific-region