Choosing a JSON library

When I download a library for using whatever API I usually see that people tend to use different JSON libraries, and sometimes I just don’t have it installed, but I know I got another one which could do the job just fine.

A while ago I ran across this while I was having a look at the Tropo WebAPI library (http://github.com/tropo/tropo-webapi-python) and ended up adding the following code:

try:
    import cjson as jsonlib
    jsonlib.dumps = jsonlib.encode
    jsonlib.loads = jsonlib.decode
except ImportError:
    try:
        from django.utils import simplejson as jsonlib
    except ImportError:
        try:
            import simplejson as jsonlib
        except ImportError:
            import json as jsonlib

Most used JSON libraries are ordered regarding speed. You might want to read a nice comparison between libraries here:
http://blog.hill-street.net/?p=7

:wq