在 s3 python boto3 中替换文件

Question

If we have to completely replace an existing file in specified s3 folder path with another file (with different filename) using python (lambda)

At any instant of time the particular folder path in s3 would have only one file, which would be completely replaced with another when running the python code

Which boto function could be used for the above. Thanks!

Answer 1

To do this you'd simply need to call the upload_object function which actually is a wrapper for the put_object function.

The function call would look like the below.

import boto3
s3 = boto3.resource('s3')
s3.meta.client.upload_file('/tmp/hello.txt', 'mybucket', 'replace/this/file.txt')

As long as you do not have object versioning enabled it will replace the previous object that existed for that key before.