[O] export image generated by python code.

[Khoroshyy Petro]

Hi all.
After some struggle, I can see inline pictures  in my org file.
The problem was python execution. If I execure the code in python-mode
shell, it generates a picture.
I the code executed via C-c C-c, the output picture file is empty.
I still do not know how to solve it.

And I have encountered another problem. The 'result' image is not
exported, even if I add play with :export option.

Any recommendations how to solve those?
Thanks
Petro
#+BEGIN_SRC python :file estimated_spectra_cl.png
  import pylab
  from scipy import optimize
  import numpy as np
  import pylab as plt
.....
  plt.figure()
  plt.plot(spectra[:,0],spectra[:,1:])
  plt.grid(1)
  # plt.show()
  plt.savefig("estimated_spectra_cl.png",dpi=100)
#+END_SRC

#+RESULTS:
[[file:estimated_spectra_cl.png]]