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delete a list in text file

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Join Date: Mar 2007

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Reputation: nitinloml is an unknown quantity at this point

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nitinloml

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delete a list in text file

Mar 29th, 2007

delete a list in text file well i m having a text file which contain time,user name & id, now if i want to modify the time without affecting the id & user name is it possible?
or how i delete that list & enter a new list in that text file

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Join Date: Jul 2005

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bumsfeld

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Re: delete a list in text file

Mar 29th, 2007

It would be nice, if you could give us an actual example, so we don't have to guess too wildly!

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Join Date: Mar 2007

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nitinloml

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Re: delete a list in text file

Mar 29th, 2007

puru|8346|(2007, 3, 26, 0, 36, 59, 0, 85, 0)|
admin|5194|(2007, 3, 28, 3, 2, 21, 1, 86, 0)|

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Join Date: Mar 2007

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nitinloml

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Re: delete a list in text file

Mar 29th, 2007

puru|8346|(2007, 3, 26, 0, 36, 59, 0, 85, 0)|
admin|5194|(2007, 3, 28, 3, 2, 21, 1, 86, 0)|

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Join Date: Jul 2006

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jrcagle

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Re: delete a list in text file

Mar 29th, 2007

Ah. Here's a stab:

 Help with Code Tags 
 Python Syntax (Toggle Plain Text) 
def change_time(record, new_time):
 
   name,id,time = record.split('|')
   time = str(new_time)
   record = '|'.join((name,id,time)) + '|'
   return record
def change_time(record, new_time):

   name,id,time = record.split('|')
   time = str(new_time)
   record = '|'.join((name,id,time)) + '|'
   return record

Jeff

Last edited by jrcagle; Mar 29th, 2007 at 10:18 pm.

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Join Date: Mar 2007

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nitinloml

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Re: delete a list in text file

Mar 30th, 2007

#!/usr/bin/python
import string
import re
import random
import sys
import time
import fileinput

tn = time.time()
t = str(tn)
ss = "5571"
lv = open("/usr/local/https/data/session1.txt","r")
lvr = lv.readlines()
l_lvr = len(lvr)
#print lvr
l_list = []
for i in range(l_lvr):

test = re.split('\|', lvr[i])
l_list.append(test)
#print l_list
for u,s,t,sp in l_list:
if s == ss:
so_list = [u, s, t, sp]
u = string.join(so_list)
#print f
s_list = u,s,t,sp
e = so_list[2]
print e
to = s_list[2]
#print st_to
too = float(to)
f = tn - too
if f < 3600:
so_list[2] = str(tn)
sn_list = so_list
print sn_list
g =string.join(sn_list)
print g
for line in fileinput.input('/usr/local/https/data/session1.txt', inplace=1):
line = line.replace(u, g)
sys.stdout.write(line)
sys.exit()

else:
#return 1
print "kK"
sys.exit()
print "no"

file line is not replacing with new one suggest

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Join Date: Aug 2008

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icsoka

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Re: delete a list in text file

Dec 18th, 2008

Okay im lost here...this is joining , how does remove the time field and leave the rest in tact...

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Originally Posted by jrcagle

Ah. Here's a stab:
Help with Code Tags

Python Syntax (Toggle Plain Text)
def change_time(record, new_time):
 
   name,id,time = record.split('|')
   time = str(new_time)
   record = '|'.join((name,id,time)) + '|'
   return record
def change_time(record, new_time): name,id,time = record.split('|') time = str(new_time) record = '|'.join((name,id,time)) + '|' return record
Jeff

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Join Date: Dec 2006

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woooee

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Re: delete a list in text file

Dec 19th, 2008

First, here is the way I __think__ your code looks when properly formatted.

 Help with Code Tags 
 Python Syntax (Toggle Plain Text) 
#!/usr/bin/python
##import string          ##    string is deprecated
import re
import random
import sys
import time
import fileinput
 
tn = time.time()
t = str(tn)
ss = "5571"
lv = open("/usr/local/https/data/session1.txt","r")
lvr = lv.readlines()
l_lvr = len(lvr)
#print lvr
l_list = []
for i in range(l_lvr):
 
     test = re.split('\|', lvr[i])
     l_list.append(test)
     #print l_list
     for u,s,t,sp in l_list:
          if s == ss:
               so_list = [u, s, t, sp]
               u = string.join(so_list)
               #print f
               s_list = u,s,t,sp
               e = so_list[2]
               print e
               to = s_list[2]
               #print st_to
               too = float(to)
               f = tn - too
               if f < 3600:
                    so_list[2] = str(tn)
                    sn_list = so_list
                    print sn_listg =string.join(sn_list)
               print g
for line in open('/usr/local/https/data/session1.txt', "r"):
     line = line.replace(u, g)
     sys.stdout.write(line)
sys.exit()
 
##---  don't know where the else goes
else:
#return 1
print "kK"
sys.exit()
print "no"
#!/usr/bin/python
##import string          ##    string is deprecated
import re
import random
import sys
import time
import fileinput

tn = time.time()
t = str(tn)
ss = "5571"
lv = open("/usr/local/https/data/session1.txt","r")
lvr = lv.readlines()
l_lvr = len(lvr)
#print lvr
l_list = []
for i in range(l_lvr):

     test = re.split('\|', lvr[i])
     l_list.append(test)
     #print l_list
     for u,s,t,sp in l_list:
          if s == ss:
               so_list = [u, s, t, sp]
               u = string.join(so_list)
               #print f
               s_list = u,s,t,sp
               e = so_list[2]
               print e
               to = s_list[2]
               #print st_to
               too = float(to)
               f = tn - too
               if f < 3600:
                    so_list[2] = str(tn)
                    sn_list = so_list
                    print sn_listg =string.join(sn_list)
               print g
for line in open('/usr/local/https/data/session1.txt', "r"):
     line = line.replace(u, g)
     sys.stdout.write(line)
sys.exit()

##---  don't know where the else goes
else:
#return 1
print "kK"
sys.exit()
print "no"

As you can see, it takes way too much time to try and fiqure out the code. so you are not getting any responses. Just click the "#" icon above the posting box and put your program between the code statements. The basic format of the program would be

 Help with Code Tags 
 Python Syntax (Toggle Plain Text) 
fp = open(file_name, "r")
fp_out = open(file_name+".new", "w")
for rec in fp:
     u,g = function_to_calculate_u_g_for this record()
     ##    split the input rec into name, id, time, etc
     ##    write to ".new" file
     fp_out.write("%s %s %s %s\n" % (name, id, u, g))
fp_out.close()
fp = open(file_name, "r")
fp_out = open(file_name+".new", "w")
for rec in fp:
     u,g = function_to_calculate_u_g_for this record()
     ##    split the input rec into name, id, time, etc
     ##    write to ".new" file
     fp_out.write("%s %s %s %s\n" % (name, id, u, g))
fp_out.close()

The data is now in a new file. You now move the new file to the old file's name or whatever you want.