How to convert ASCII-number => HEX -number => string of numbers in HEX ?

[Pekka Niiranen]

Hi,

I looked thru modules binascii and struct but not found a way to
convert hexadecimal value to a string of hex values according to ascii 
table.

Example:

number         =    6673            (max is 0xFFF)
hex -value     =    '0x1a11'
string value    =    "\x31\x61\x31\x31"    (31 is one, 61 is 'a')

or:

number         =    333            (max is 0xFFF)
hex -value     =    '0x14d'   
string value    =    "\x30\x31\x34\x64"    (30 is zero, 31 is one, 34 is 
four, 64 is "d")

I have got this far:

x=""
a = hex(333)
for byte in a[2:].zfill(4):        # Number is allways presented with 4 
hex values (filling missing values with zeros)
    x = "%s%s" % ( WHAT HERE )

Anybody, is there a build in function or shortcut  that does this ?

-pekka-