[Python] How to retrieve only the file name in a s3 folders path using pyspark

Hi I have aws s3 bucket in which few of the folders and subfolders are defined

I need to retrieve only the filename in whichever folder it will be. How to go about it

s3 bucket name - abc

path - s3://abc/ann/folder1/folder2/folder3/file1

path - s3://abc/ann/folder1/folder2/file2​

code tried so far

s3 = boto3.client(s3)
lst_obj = s3.list_objects(bucket='abc',prefix='ann/')
lst_obj["contents"]


I'm further looping to get all the contents

for file in lst_obj["contents"]:
do somtheing...


Here file["Key"] gives me the whole path, but i just need the filename

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