Save CallLogs using python

from __future__ import division
import logs
import appuifw
import e32
import time
fn=u"E:\\system\\Apps\\Python\\logs\\logs.txt"
logfile = open(fn,"a")
e=['out', 'missed', 'in']
     for x in e:
       l=logs.calls(mode=x)
       for i in range(len(l)):
           dim=time.localtime(l[i]["time"])
           dateim= time.strftime("%Y/%m/%d-%H:%M:%S", dim)
           s=str(dateim)+("  M:")+str(l[i]["direction"])
           s=s+("  D:")+str(l[i]["duration"])
           s=s+("  N:")+str(l[i]["number"])
           nln=" ;"
           s=s+nln
       logfile.write( str(s)+'\n')
logfile.close()
# medzindia.blogspot.com
appuifw.note(u"log Written.  MIT....Email:imran-doc@hotmail.com,",'info')

Output:-
2009/mo/da-hh:mm:ss  M:Outgoing  N:1234567890 ;
2009/mo/da-hh:mm:ss  M:Missed call  N:1234567890 ;
2009/mo/da-hh:mm:ss  M:Incoming  N:1234567890 ;

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comments:-
from __future__ import division
import logs
import appuifw
import e32
import time
# declare a filesystem object
# u for UNICODE format of file
# r for windows format of file
#   for binary
fn=u"E:\\system\\Apps\\Python\\logs\\logs.txt"
# open file of the FSO 
# r to read
# w to write
# a to append
logfile = open(fn,"a")
# declare a tuple containing three parameters / mode-variables
e=['out', 'missed', 'in']
# loop through for each mode as outgoing, missed and incoming calls
# x changes to out, missed and in cyclically as declared in e
# for x in e: is executed thrice
for x in e:
# declare log of calls with each mode cyclically starting with outgoing
l=logs.calls(mode=x)
#for each of the three modes loop till the mode(e.g. outgoing) list ends 
for i in range(len(l)):
# for each entry in log, convert the time in seconds since 1970(UTC) to localtime
dim=time.localtime(l[i]["time"])
# convert the dim tuple to standard format with strftime
dateim= time.strftime("%Y/%m/%d-%H:%M:%S", dim)
# store the formatted localtime to a string s, add alphabet M and add direction
# of call as outgoing/missed/incoming
# otherwise we can use the value of x as declared in for x in e:
s=str(dateim)+("  M:")+str(l[i]["direction"])
# the duration of the call
s=s+("  D:")+str(l[i]["duration"])
# the number called (second party) preceeded by Alph N:
s=s+("  N:")+str(l[i]["number"])
# a semicolon so that you can parse the final file to a database
nln=" ;"
# finalize the value of string s
s=s+nln
# write string s to the file along with a newline
logfile.write( str(s)+'\n')
# for the first run the loop 'for x in e:' ends and begins with next value of x
# 'for x in e:' ends with three runs
# close the file
logfile.close()
# medzindia.blogspot.com
# flash a 'info' note on the screen, UNICODE 'u' 
appuifw.note(u"log Written.  MIT....Email:imran-doc@hotmail.com,",'info')