octal instead of hex

[Larz60+]

How about:

astring = 'Hello.'
for c in astring:
   print('\\{:03o}'.format(ord(c)), end='')
print()

results:

Output:
/110/145/154/154/157/056

or use list comprehension

[print('\\{:03o}'.format(ord(c)), end='') for c in astring]