python open large log file
<p>I use python open large log file like</p>

<pre><code>Thu Oct  4 23:14:40 2012 [pid 16901] CONNECT: Client "66.249.74.228"
Thu Oct  4 23:14:40 2012 [pid 16900] [ftp] OK LOGIN: Client "66.249.74.228", anon     password "googlebot@google.com"
Thu Oct  4 23:17:42 2012 [pid 16902] [ftp] FAIL DOWNLOAD: Client "66.249.74.228",   "/pub/10.5524/100001_101000/100039/Assembly-2011/Pa9a_assembly_config4.scafSeq.gz",  14811136 bytes, 79.99Kbyte/sec
Fri Oct  5 00:04:13 2012 [pid 25809] CONNECT: Client "66.249.74.228"
Fri Oct  5 00:04:14 2012 [pid 25808] [ftp] OK LOGIN: Client "66.249.74.228", anon password "googlebot@google.com"
Fri Oct  5 00:07:16 2012 [pid 25810] [ftp] FAIL DOWNLOAD: Client "66.249.74.228", "/pub/10.5524/100001_101000/100027/Raw_data/PHOlcpDABDWABPE/090715_I80_FC427DJAAXX_L8_PHOlcpDABDWABPE_1.fq.gz", 14811136 bytes, 79.99Kbyte/sec
Fri Oct  5 00:13:19 2012 [pid 27354] CONNECT: Client "1.202.186.53"
Fri Oct  5 00:13:19 2012 [pid 27353] [ftp] OK LOGIN: Client "1.202.186.53", anon password "mozilla@example.com"
</code></pre>

<p>I want to read the lines from the end of file like tail command to get the recently 7 days
record.</p>

<p>Here is my code, how can i change it.</p>

<pre><code>import time
f= open("/opt/CLiMB/Storage1/log/vsftp.log")
def OnlyRecent(line):
   if  time.strptime(line.split("[")[0].strip(),"%a %b %d %H:%M:%S %Y")&gt;     time.gmtime(time.time()-(60*60*24*7)): 
    return True
return False
filename= time.strftime('%Y%m%d')+'.log'
f1= open(filename,'w')
for line in f:
 if OnlyRecent(line):
        print line
        f1.write(line)
f.close()
f1.close()
</code></pre>
