将文件复制到服务器后的文件大小差异víaFTP

I have created a PHP-script to update a webserver that is live inside a local directory. I'm migrating the script into Python. It works fine for the most part, but after a PUT command the size of the file appears to change. Thus, the size of the file is different from that of the file on the server. I have created a PHP-script to update a webserv