editing text via python
<p>i have Text file and the content is</p>

<p>Johan</p>

<p>Sara</p>

<p>robert</p>

<p>how to add next each one <code>:OK</code></p>

<p>like that</p>

<p>Johan:OK</p>

<p>sara:OK</p>

<p>robert:OK</p>

<p>by python ... and thanks</p>
