What's the main difference between simplejson and the module in the standard library of python? [duplicate]

This question already has answers here: Closed 11 years ago.

Possible Duplicate:

json and simplejson module differences in Python

On this page about json, I read abo开发者_StackOverflowut json and the python modules available for json. The mention those four libraries:

• Json in the Python Standard Library.
• simplejson.
• pyson.
• Yajl-Py

Which one is recommended? What is the main difference between the library from the standard library and simplejson?

---

json in the standard library is simplejson, only bit older version, maintained more slowly. As for which to use, stdlib json unless you have a good reason not to.