Lucas Raab wrote: > I'm done porting the C code, but now when running the script I > continually run into problems with lists. I tried appending and > extending the lists, but with no avail. Any help is much appreciated > Please see both the Python and C code at > http://home.earthlink.net/~lvraab. The two files are ENIGMA.C and engima.py > > TIA
You need something like a matrix too for this, if we combine this with the already posted idea of caching of 'ord' results you could go this way: class matrix(object): """based on http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/189971 """ def __init__(self, *args): from types import IntType, StringType self.__data = [] if len(args) == 2 and type(args[0]) == IntType and type(args[1] == IntType): #args[0] = #rows, args[1] = #columns for r in range(args[0]): self.__data.append([]) for j in range(args[1]): self.__data[r].append(0) else: for arg in args: if type(arg) == StringType: self.__data.append(map(ord, list(arg))) def __repr__(self): ret = '' for r in self.__data: ret = '%s\n%s' % (ret, r) return ret def __getitem__(self, (row, col)): return self.__data[row][col] def __setitem__(self, (row, col), value): self.__data[row][col] = value #setup rotor data A = ord('A') ref_rotor = map(ord, "YRUHQSLDPXNGOKMIEBFZCWVJAT") print ref_rotor data = matrix(8, 26) for i in range(26): data[(4, i)] = (ref_rotor[i] - A + 26) % 26 print data step_data = (16, 4, 21, 9, 25) #steps at: q, e, v, j, z order = range(3) rotor = matrix("EKMFLGDQVZNTOWYHXUSPAIBRCJ", "AJDKSIRUXBLHWTMCQGZNPYFVOE", \ "BDFHJLCPRTXVZNYEIWGAKMUSQO", "ESOVPZJAYQUIRHXLNFTGKDCMWB", \ "VZBRGITYUPSDNHLXAWMJQOFECK") step = range(3) for i in range(1, 4): step[i - 1] = step_data[order[i-1]] for j in range(26): data[(i, j)] = (rotor[(order[i-1], j)] - A + 26) % 26 print data -- http://mail.python.org/mailman/listinfo/python-list
