Append file content：part size 1706920 is not supported; minimum allowed 5MiB

[kkzzhhqq]

I want to use the fput_object interface and pass in the part_size parameter to append the content of a file in the bucket. When I pass in part_size < 5MiB, an error is reported: ValueError: part size 1706920 is not supported; minimum allowed 5MiB
example：
client.fput_object( bucket_name="my bucket", object_name="my object name", file_path="my file path", part_size=position )

[Bala FA]

According to S3 specification object append is not possible.