#3 Faster writer

[Robert Brewer]

I'd appreciate a faster writer. Here's one that runs in
75% of current in simple timeit tests:

def write(obj):
if isinstance(obj, dict):
items = [":".join((write(key), write(val)))
for key, val in obj.iteritems()]
chunk = ["{", ",".join(items), "}"]
elif isinstance(obj, list):
items = [write(item) for item in obj]
chunk = ["[", ",".join(items), "]"]
elif isinstance(obj, basestring):
chunk = ['"', obj, '"']
elif isinstance(obj, float):
return "%f" % obj
elif isinstance(obj, int):
if obj is True:
return "true"
elif obj is False:
return "false"
return str(obj)
elif obj is None:
return "null"
else:
raise ValueError("Not representable in JSON:
%s" % obj)
return "".join(chunk)

Look ma, no "import types"! :)

[Robert Brewer]

Faster JSON writer