How can I easily determine if a Boto 3 S3 bucket resource exists?

Question

For example, I have this code:

import boto3

s3 = boto3.resource(\'s3\')

bucket = s3.Bucket(\'my-bucket-name\')

# Does it exist???

Answer 1

As mentioned by @Daniel, the best way as suggested by Boto3 docs is to use head_bucket()

head_bucket() - This operation is useful to determine if a bucket exists and you have permission to access it.

If you have a small number of buckets, you can use the following:

>>> import boto3
>>> s3 = boto3.resource('s3')
>>> s3.Bucket('Hello') in s3.buckets.all()
False
>>> s3.Bucket('some-docs') in s3.buckets.all()
True
>>>