title: How to add column to numpy array
body: <p>I am trying to add one column to the array created from <code>recfromcsv</code>. In this case it's an array: <code>[210,8]</code> (rows, cols).</p>
  
  <p>I want to add a ninth column. Empty or with zeroes doesn't matter.</p>
  
  <pre><code>from numpy import genfromtxt
  from numpy import recfromcsv
  import numpy as np
  import time
  
  if __name__ == '__main__':
   print("testing")
   my_data = recfromcsv('LIAB.ST.csv', delimiter='\t')
   array_size = my_data.size
   #my_data = np.append(my_data[:array_size],my_data[9:],0)
  
   new_col = np.sum(x,1).reshape((x.shape[0],1))
   np.append(x,new_col,1)
  </code></pre>