This library jansson bind implementation for Python. Library jansson https://github.com/akheron/jansson.
In some cases, you can replace that became a standard library of simplejson. The module is written in pure C and works a little bit which is interpreted simplejson python.
try:
import pyjansson as simplejson
except ImportError:
import simplejson
print simplejson.dumps({'title': 'Hyperion', 'autor': 'Dan Simmons'})