user@user-pc:~/python$ python everysymb.py 
  File "everysymb.py", line 25
    print N """
              ^
IndentationError: expected an indented block

 -*- coding: utf-8 -*-
import os

path = '/home/user/python/skypeout.txt'

i=1;


a=0;
L=[];
M=[];
N=[];
f=open (path);

for char in f.read():
 L.append(char);
#print len(L);
SMS=False;
for j in range(len(L)):
"""  if N<>['S','M','S'] and (L[j]+L[j+1]+L[j+2]=='SMS' or L[j-1]+L[j]+L[j+1]=='SMS' or L[j-2]+L[j-1]+L[j]=='SMS'):
    SMS=True; 

  if a==3 and SMS and L[j]<>r';': #при а=3
    N.append(L[j]);
    print N """

  if a==3:
    if L[j]+L[j+1]+L[j+2]=='SMS':
      SMS=True;
  if a==5 and L[j]<>r';' and not SMS: #при а=5
    M.append(L[j]);
  if L[j]==r';' and a<>7: #при а не равном 7 c кавычкой
    a=a+1;
  if a==7: #при а=7
    a=0;
    N=[];
    SMS=False;   
print M;
print N;

>>> """blablabla"""
'blablabla'
>>> #dfdfg
... 
>>>