simultaneous copy to multiple media

[Claudio Grondi]

I would like to save time copying the same file
(>6 GByte) to various different target storage
media connected to the system via USB.

Is there a (Python or other) tool able to help me
to do this, so that I don't need to copy the
source file first to the first media, then to the
second, etc.?

Claudio