trans_list={'1040':'R01R','1041':'R02R','1042':'R03R'}

msg = msg.replace('1040', trans_ru['1040'])
msg = msg.replace('1041', trans_ru['1041'])
msg = msg.replace('1042', trans_ru['1042'])

a=[('a','b'),('q','w')]
for x in a:
    msg=msq.replace(x[0],x[1])

a=[('a','b'),('q','w')]
for x in msg:
    msg=msg.replace(x[0],x[1])

trans_list={'1040':'R01R','1041':'R02R','1042':'R03R'}
for x in trans_list:
    msg=msq.replace(x,trans_list[x])

   File "e:\python\GOGO.PY", line 61, in trans_ru
    for x in trans_ru:
TypeError: iteration over non-sequence

def trans_ru(msg):
    msgout = str(msg)
    for x in trans_ru:
        msgout=msq.replace(x,trans_ru[x])
    return msgout

for x in trans_ru.keys():