Plot in Orgmode with matplotlib in python code block

orgmode-python-matplotlib.txt

#+NAME: experiments
|   k |  Trial 1 |  Trial 2 | Trial 3 |  Trial 4 |  Trial 5 |
|   5 | 0.357094 | 0.332661 | 0.28434 | 0.320276 | 0.288069 |
|  10 | 0.403938 | 0.389808 | 0.36694 | 0.372952 | 0.357887 |
|  25 | 0.443313 | 0.441736 | 0.42937 | 0.425222 | 0.418354 |
|  50 | 0.471826 | 0.458904 | 0.45862 | 0.443338 | 0.445892 |
|  75 | 0.472505 | 0.473701 | 0.48072 | 0.452730 | 0.461352 |
| 100 | 0.473184 | 0.481455 | 0.49159 | 0.462386 | 0.476871 |

#+BEGIN_SRC python :results file :exports results :var data=experiments
  import matplotlib.pyplot as plt
  import pandas as pd

  data = pd.DataFrame(data[1:], columns=data[0]).set_index('k')
  data.plot(kind='bar', legend=True)

  filename = "mySweetPlot.png"
  plt.savefig(filename)

  return(filename)
#+END_SRC