convcode.py throws a TypeError when running if installed numpy version is 1.12 or greater

[threexc]

Appears that as of 1.12, numpy float64s can no longer be used as indices. This was encountered on a system with Python 2.7.14 and numpy 1.13.3:

  File "/usr/lib/python2.7/site-packages/commpy/channelcoding/convcode.py", line 337, in conv_encode
    puncture_matrix[0:].sum()/np.size(puncture_matrix, 1), 'int')
TypeError: 'numpy.float64' object cannot be interpreted as an index

Rolling back to 1.11.0 shows a warning:

/usr/lib/python2.7/site-packages/commpy/channelcoding/convcode.py:337: VisibleDeprecationWarning: using a non-integer number instead of an integer will result in an error in the future
  puncture_matrix[0:].sum()/np.size(puncture_matrix, 1), 'int')
/home/threexc/Projects/Recorder/T9_FrameGenerator/make_symbol.py:1047: VisibleDeprecationWarning: using a non-integer number instead of an integer will result in an error in the future
  (_,curr_data_time,_,_) = make_symbol(scr_coded[i*ncbps:(i+1)*ncbps],rate_dict[rate][1],i+1)

[BastienTr]

I can't reproduce this problem with the unit test under python 2 nor under 3 and the latest version of numpy. I close but don't hesitate to reopen with a code showing the error so that I can have a closer look.