How can I translate a list of int into binary. The struct.pack('!B',...) need only integer. I want to have a 8 bit value which represent by V (3 bit) = 1 A (1 bit) = 0 R (1 bit) = 0 T (1 bit) = 0 or 1 E (1 bit) = 0 C (1 bit) = 0 Can I pack (1,0,0,1,0,0) ? Thanks. Excusez moi pour mon franglais. A ces francais.