How to list objects by extension from s3 api?

Question

Can i somehow search objects in S3 by extension, not only by prefix?

Here is what i have now:

ListObjectsResponse r = s3Client.ListObjects(new Amazon         


        

Answer 1

I'm iterating after fetching the file information. End result will be in dict

import boto3

s3 = boto3.resource('s3')

bucket = s3.Bucket('bucket_name')

#get all files information from buket
files = bucket.objects.all()

# create empty list for final information
files_information = []

# your known extensions list. we will compare file names with this list
extensions = ['png', 'jpg', 'txt', 'docx']

# Iterate throgh 'files', convert to dict. and add extension key.
for file in files:
    if file.key[-3:] in extensions:
        files_information.append({'file_name' : file.key, 'extension' : file.key[-3:]})
    else:
        files_information.append({'file_name' : file.key, 'extension' : 'unknown'})


print files_information