title: How to unpickle from C code
body: <p>I have a python code computing a matrix, and I would like to use this matrix (or array, or list) from C code.<br>
  I wanted to pickle the matrix from the python code, and unpickle it from c code, but I could not find documentation or example on how to do this.
  I found something about marshalling data, but nothing about unpickling from C.</p>
  
  <p>Edit :
  Commenters Peter H asked if I was working with numpy arrays. The answer is yes.</p>