Import errors

[CFGrote]

Hi @buzmakov , @samoylv
Thanks for making this new release with many important updates.
I encounter the following import errors after installing the new version via conda.

Executing the 2. cell in samples/App_MID_case_C.ipynb:

<ipython-input-1-72a0440765f5> in <module>
      9 import pylab
     10 
---> 11 import cPickle as pickle
     12 import errno
     13 

Solution would be to include cPickle in the requirements.txt

But even then, I get

ImportError                               Traceback (most recent call last)
<ipython-input-2-261db5d0cd3c> in <module>
     13 
     14 #import SRW core functions
---> 15 from wpg.srwlib import srwl, srwl_opt_setup_CRL, SRWLOptD, SRWLOptA, SRWLOptC, SRWLOptT
     16 
     17 #import SRW auxiliary functions

/gpfs/exfel/data/user/grotec/Codes/WPG/wpg/__init__.py in <module>
     25 
     26 # fix segmentation fault using fftw from numpy mkl
---> 27 from .srw import srwlpy
     28 
     29 # Create aliases for simple importing

ImportError: cannot import name 'srwlpy' from 'wpg.srw' (../wpg/srw/__init__.py)

which looks to me like a naming issue. Can you fix?

Thanks!

[CFGrote]

I realize that samples/App_MID_case_C.ipynb is probably not up to date anyway (should remove?).
After reinstalling from scratch, also the second error is gone, so I close this one.

[buzmakov]

Hi @CFGrote
cPickle is fast pickle library is python2 standard library
In python3 it named just 'pickle'
I should update samples/App_MID_case_C.ipynb