In Python, the format string for printing 2-digit hex is %02x or %02X. You store binary data in strings, and print the ordinal of the array index of the string in question.
This forum thread has one low-noise response that gives good examples:
http://www.velocityreviews.com/forums/t350972-hexadecimal-conversion-in-python.html
Here is another very nice set of answers to the question in which the bytes from a "string" are being printed after being read in from a file. The keys in the following are using the hex(), using the ord() of the character, and alternate examples such as decode() and int(,16):
http://code.activestate.com/recipes/496969-convert-string-to-hex/
