Python Read Telegraph

import serial
 
timeout=250
reading=True
print "\n\n\n\n\n\n\n\n\n\n\n\n"
zerocount=0
codes=["._", "_...", "_._.", "_..", ".", ".._.", "__.", "....", "..", ".___", "_._", "._..", "__", "_.", "___", ".__.", "__._", "._.", "...", "_", ".._", "..._", ".__", "_.._", "_.__", "__.."] keys=["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"] ser = serial.Serial('/dev/tty.usbserial-A6007z03', 9600)
 
 
def analyze(s):
	s=s[s.find("1"):]
	s=s.replace("10", "1 0")
	s=s.replace("01", "0 1")
	s=s.replace("010", "000")
	s=s.replace("101", "111")
	s=s.replace("0110", "0000")
	while (s.find("00")!=-1):
		s=s.replace("00", "0")
	s=s.replace("0", " ")
	#print s
	blocks=s.split()
	#print blocks
	total=0
	count=0
	min=100000000000
	for i in range(0, len(blocks)):
		if(len(blocks[i])<min):
			min=len(blocks[i])
	mess=""
	for i in range(0, len(blocks)):
		if(len(blocks[i])>=2*min):
			mess+="_"
		else:
			mess+="."
	if(mess!=""):
		if(mess.find("_")==-1):
			if(min>=75):
				mess=mess.replace(".", "_")
		print mess
 
	for i in range(0, len(codes)):
		if(mess==codes[i]):
			#print min
			print keys[i]+"\n"
s=""
temp=0
count=0
while 1:
	rl=ser.readline()
	try:
		rl = int((rl.strip()).replace("?", ""))
	except:
		#print "whoops"
		1
	if(rl>800):
		rl="1"
	else:
		rl="0"
	s+=rl    
 
	if(rl=="0"):
		zerocount+=1
		if(zerocount>=timeout):
			analyze(s)
			s=""
			zerocount=0
	else:
		zerocount=0