ori=list(map(str,range(9)))+[chr(64+i) for i in range(1,26)]+[chr(96+i) for i in range(1,26)]+['z','Z','9'] trans=list(map(str,range(1,10)))+[chr(97+i) for i in range(1,26)]+[chr(65+i) for i in range(1,26)]+['A','a','0'] codemap={} uncodemap={} for key, value in zip(ori,trans): codemap[key]=val...