Can someone help please

[Gary]

Hi
Can someone help me with this code below please,
For some reason it will not send me the first text file in the directory.
I made up an empty file a.txt file with nothing on it and it sends the 
files i need but would like to fix the code.
Thanks




total = ' '
os.chdir('/home/woodygar/Desktop/Docs')
for i in os.listdir('.'):
   if '.txt' in i:
     f = open(i, 'r')
     total += f.read()
     f.close()
message = """\
Subject: %s
%s

"""% (SUBJECT,total)