import sys
import SER
def runCommand(arg):
while 1:
try:
print 'InputCommand'
tChar = -1
tStr = ''
while tChar != 13:
tChar = -1
tChar = SER.readbyte()
if tChar not in (13,-1):
tStr = tStr + chr(tChar)
exec(tStr)
except SyntaxError:
print 'syntax error'