problem for write and delete a line in text file

[jeepers]

Hi all,
my problem is delete a line in a text file.

the file contain -n line with user, userCode.
i want to replace the line with user is egual at user, and/or insert new line but delete the line like user.
i'm sorry for my english :D

if user exist delete a line of the user and insert new line.
if not exist insert new line.
possibility to delete a line.

please :D

user="myname"
userCode="1987987981"
f = open('userCodes.txt', 'r+')
for line in f:
   
    if user in line:
        print 'prima ' + str(line)
        line = line.replace(line, user + ',' + str(userCode) + '\n')
        f.write('\n' +str(line))
        print 'dopo ' + str (line)

[jeepers]

This code is ok for my work.

user="myname"
userCode="1987987981"
import re
import fileinput, string, sys
##f = open('userCodes.txt', 'rw')
 ##print f
##f = open('userCodes.txt', 'r+')
f= file('userCodes.txt')
##print f
	###scorro le linee del file
newlines=[]
for line in f:
            if user in line:  
                print 'prima raplace ' + str(line)
                line = line.replace(line, user + ',' + str(userCode) + '\n')
                print 'dopo replace ' + str(line)
            newlines.append(line)
outfile=file('userCodes.txt','w')
outfile.writelines(newlines)

[ghostdog74]

This code is ok for my work.

user="myname"
userCode="1987987981"
import re
import fileinput, string, sys
##f = open('userCodes.txt', 'rw')
 ##print f
##f = open('userCodes.txt', 'r+')
f= file('userCodes.txt')
##print f
	###scorro le linee del file
newlines=[]
for line in f:
            if user in line:  
                print 'prima raplace ' + str(line)
                line = line.replace(line, user + ',' + str(userCode) + '\n')
                print 'dopo replace ' + str(line)
            newlines.append(line)
outfile=file('userCodes.txt','w')
outfile.writelines(newlines)

a little refinement

user="myname"
userCode="1987987981"
for line in open('userCodes.txt'):
            line = line.strip() 
            if user in line:                  
                line = line.replace(line, user + ',' + str(userCode) + '\n')
                print line

you are only generating one output file right? you can save some code by just printing to stdout. then when you execute the script on your OS ,

# python yourscript.py > output.txt

[jeepers]

Thank's ghostdog74,
i have multiple code to write in file.txt when the user change or delete your accont.
In the test user and userCodes, is defined for semplify my work, but in the real script user and userCodes appartein at the user logged in.
If the user not exist in database also new line in the file .

Again sorry for my english.

[ghostdog74]

Thank's ghostdog74,
i have multiple code to write in file.txt when the user change or delete your accont.
In the test user and userCodes, is defined for semplify my work, but in the real script user and userCodes appartein at the user logged in.
If the user not exist in database also new line in the file .

Again sorry for my english.

sorry don't understand, but anyway, to output to different files in your script, use the method of opening files with "a" or "w" and write the data to it
eg

f = open("file","a")
f.write("a string\n")
f.close()

or just simply

open("file","a').write("a string\n")