使用带有Dynamic Foldername的boto3在S3中上传文件

I have 4 S3 buckets : SourceBucket\folder1\file1 and DestinationBucket1-folder1, SourceBucket\folder2\file1 and DestinationBucket2-folder2. When I upload the folders, I would like the code to check for folder 'DestinationBucket1-folder1' if it exists and then upload the folder1 and files underneath that folder.I have 4 S3 buckets : SourceBucket\folder1\file