Move CSVs from one AWS S3 Account to Another Boto3 [duplicate]

Question

I have a set of CSVs in an S3 bucket in an AWS account that I want to move to another bucekt in another account. The only approach I can think of (using psuedocode) is the following:

• connect to bucket a
• list contents of bucket
• iterate through list and read in each CSV as a dataframe
• write dataframe to bucket b

However, I was wondering whether there's another way to do this without explicitly reading the CSVs into memory.