Yeah in it's early days, the torrent network was small, and peer counts were limited. The original, and many later Python implementations used event loops, whic

Yeah in it's early days, the torrent network was small, and peer counts were limited. The original, and many later Python implementations used event loops, which side step concurrency implementation overheads (like threads), and very often do a lot of heavy lifting in C. I'm not sure that Deluge is Python for the torrent part. The standard is to use libtorrent these days. Python can handle a torrent client with appropriate tools, but you just have to be extra careful about algorithms etc.