My problem is, that I have something encoded (base64 like) with a differnet index table:
0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/
instead of
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/
so when I use base64.b64decode()
it gives me a wrong result.
Is there a way to set this table durring conversion (as a parameter maybe)?
Or should I "convert" the wrong base64 string, I mean replace 0 to A, 1 to B, etc... and than use base64decode? if so what is the best and fast workaround for this?
update1: I use this, which works, but looks a bit slow, and unprofessional. :)
def correctbase64(str):
dicta = [ ['0','A'], ['1','B'], ['2','C'], ['3','D'], ['4','E'], ['5','F'], ['6','G'], ['7','H'], ['8','I'], ['9','J'], ['A','K'], ['B','L'], ['C','M'], ['D','N'], ['E','O'], ['F','P'], ['G','Q'], ['H','R'], ['I','S'], ['J','T'], ['K','U'], ['L','V'], ['M','W'], ['N','X'], ['O','Y'], ['P','Z'], ['Q','a'], ['R','b'], ['S','c'], ['T','d'], ['U','e'], ['V','f'], ['W','g'], ['X','h'], ['Y','i'], ['Z','j'], ['a','k'], ['b','l'], ['c','m'], ['d','n'], ['e','o'], ['f','p'], ['g','q'], ['h','r'], ['i','s'], ['j','t'], ['k','u'], ['l','v'], ['m','w'], ['n','x'], ['o','y'], ['p','z'], ['q','0'], ['r','1'], ['s','2'], ['t','3'], ['u','4'], ['v','5'], ['w','6'], ['x','7'], ['y','8'], ['z','9'] ]
l = list(str)
for i in range(len(l)):
for c in dicta:
if l[i] == c[0]:
l[i] = c[1]
break
return "".join(l)
See Question&Answers more detail:
os