title: Python Pandas add columns with an for loop
body: <p>I want to add some columns with an funktion without typing each name for the colum
  like this</p>
  <pre><code>for i in range(0,11):
     df[&quot;row&quot; + i] = [random.randrange(1, 50, 1) for i in range(7)]  # after the = is an exampel
  </code></pre>
  <p>thanks for you´re help</p>