How to write binary data to file and socket

[Lee Soin]

Hello, all!
I'm new to python. In Linux C programming, writing data to file and socket
share the same system call "write". But it seems that only data of string
type can be used for "write" and "send". So how to write binary data to file
and socket?

-- 
Sun Li
Department of Physics
Nanjing University, China
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