title: Adding data to pandas dataframe with no header
body: <p>I am trying to add a row(list of int) to pandas dataframe but i am somehow unable to append it. The thing is the dataframe has no header and everywhere the put data through specifying column names. I dont understand how to do it without header. Below is my dataframe named <strong>sheet</strong></p>
  
  <pre><code>sheet = pd.read_csv("labels.csv",header = None) #sheet = [[1,1,1,2,2 ...]]
  </code></pre>
  
  <p>i want to append resulting list named <code>simple_list = [1,2,3,4,2,1,1,1]</code> to it.</p>