Creating A Users File

[dballar1]

I am having some trouble verifying the given data for 'user' against what is already in the users.txt file. An example of a line in the text file is...
('Ralph', '1a1dc91c907325c69271ddf0c944bc72')
Where 'Ralph' is what I want to compare against the users input for 'user'.

Here is my code so far:

#12/13/10 12:46 AM
#attempt to add new users to a users file
import md5

file = open('./users/users.txt', 'r')

user = raw_input("Please enter your username: ")

while line:
        line = file.readline()
        if line == user:
                print 'error'

file.close()

passwort = raw_input("Enter your password: ")

#MD5 hashing password and writing
passwort = md5.md5(passwort).hexdigest()
info = user, passwort
info = str(info)

#writing the user's data
#a flag means to append (if it exists)
file = open('./users/users.txt', 'a')
file.write(info)
file.write('\n')

print line would return ('Ralph', '1a1dc91c907325c69271ddf0c944bc72')
but print line[0] prints '('

If somebody wouldn't mind and help me with this simple problem because I'm sure I'm missing something simple. Thanks for your time.

[dballar1]

Updated and fixed code. Still pretty sloppy.

#12/14/10 1:53 PM
#making a function.. and sleep

import time, hashlib

def userCreation(): 
        user = raw_input("Please enter your username: ")
        user = user.lower()
        file = open('./users/users.txt', 'r')
        line = file.readline()
        while line:
                takenUser = line.split(',')[0][2:-1]
                takenUser = takenUser.lower()
                line = file.readline()
                if user == takenUser:
                        print '\nTaken username please try again!\n'
                        time.sleep(2)
                        userCreation()


        passwort = raw_input("Enter your password: ")

        #hashing password and writing
        passwort = hashlib.sha224(passwort).hexdigest()
        info = user, passwort
        info = str(info)

        #writing the user's data
        #a flag means to append (if it exists)
        file = open('./users/users.txt', 'a')
        file.write(info)
        file.write('\n')

userCreation()

[pyTony]

Here my version, I used though more simple format of username,password and standard lowercase Python function names:

import time
import os
import hashlib

FILENAME = 'users/users.txt'


def user_creation():
    while True:
        try:
            userfile = open(FILENAME, 'r')
        except IOError:
            # create file if it does not exist
            path = os.path.dirname(os.path.abspath(FILENAME))
            try:
                # create directories which do not exist
                os.makedirs(path)
            except:
                # directory existed
                pass
            userfile = open(FILENAME, 'w')
        else:
            user = raw_input("Please enter your username: ").lower()
            # all usernames are prepared in lowercase at input
            if "%s," % user in userfile.read():
                print 'Taken password, try another username'
            else:
                passwort = raw_input("Enter your password: ")
                #hashing password and writing
                passwort = hashlib.sha224(passwort).hexdigest()
                open(FILENAME, 'a').write("%s,%s\n" % (user, passwort))
                # success, return
                return 


user_creation()