How can I trim down this code? : <p>I have two text files "usernames.txt" and "passwords.txt" and I want to have them print out in a specific order, I have a snippet of code that does exactly what I need but I feel like It can be shortened.</p>

<pre><code>with open('passwords.txt','r') as f:
    for line in f:
        for password in line.split():
            with open('usernames.txt','r') as f:
                for line in f:
                    for username in line.split():
                        print username +":"+ password
</code></pre>

<p>This works perfect for me what I feel like I can make it even shorter!</p>

<p>current output is this:</p>

<pre><code>username1:password
username1:password1
username1:password2
username2:password
username2:password1
username2:password2
</code></pre>
