title: How to Combine Rows of Text in Pandas
body: <p>I have a table with two columns and i want to combine the text with the same id</p>
  
  <pre><code>import pandas as pd
  df = DataFrame({'id':[101453,101465,101478,101453,101465,101465], 'text' :['this','is','a','test','string','one']})
  </code></pre>
  
  <p>I need a result like this:</p>
  
  <pre><code>df = DataFrame({'id':[101453,101465,101478], 'text':['this test','is string one','a']})
  </code></pre>