title: MemoryError when loading a JSON file
body: <p>Python (and spyder) return a MemoryError when I load a JSON file which is 500Mo large. </p>
  
  <p>But my computer have a 32Go RAM and the "memory" displayed by spyder go from 15% to 19% when I try to load it! It seems that I sould have much more space... </p>
  
  <p>Something I didn't think of?</p>