title: Python Convert Datetime from csv for matplotlib
body: <p>I am trying to plot from a csv file with column 1 as a datetime value, as below</p>
  
  <pre><code> 27-08-2016 08:43   21.38329164
  </code></pre>
  
  <p>using this code:</p>
  
  <pre><code>from matplotlib import pyplot as plt
  from matplotlib import style
  import numpy as np
  import datetime as dt
  from datetime import datetime
  import matplotlib.dates as mdates
  
  style.use('ggplot')
  
  x,y = np.genfromtxt('I112-1a.csv', unpack=True,dtype=None, delimiter = ',', converters={0: lambda x: datetime.strptime(x, '%d-%m-%Y %H:%M')})
  
  
  plt.title('Panel Charge')
  plt.ylabel('Y axis')
  plt.xlabel('X axis')
  plt.show()
  </code></pre>
  
  <p>I am getting this error:</p>
  
  <pre><code>    x,y = np.genfromtxt('I112-1a.csv', unpack=True,dtype=None, delimiter = ',', converters={0: lambda x: datetime.strptime(x, '%d-%m-%Y %H:%M')})
  ValueError: too many values to unpack
  </code></pre>
  
  <p>Please help! 
  Thanks</p>