how to pack and unpack data using python 2.5 -


i know there mutliple questions relating question i'm having difficulty understating how pack & unpack works.

for example using struct.pack("!b",14) gives me value of x0e one-byte binary.

how can create four-byte binary? example struct.pack("!b",104277) should generate 0x00019755 cannot code struct.pack("!b",104277) output 0x00019755

background details of problem

i'm trying create "type-4 high-resolution grayscale fingerprint image" record part of nist standard. first value of type-4 record length of record (len) in case 104277 bits, standard specifies len should represented four-byte binary. sample data have contains value 0x00019755 has been converted four-byte binary complies standard.

reference links:

as specified in §7.3.2.2. format characters of python manual, format code unsigned 4-byte long l.

struct.pack("!l", 104277)

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