Repeat steps:

>>> import simpleubjson
>>> ubjdata = simpleubjson.encode({'hello' : 'world'})
>>> ubjdata
'{Si\x05helloSi\x05world}'
>>> simpleubjson.pprint(ubjdata)
[{]
    [S] [i] [5] [hello]
    [S] [i] [5] [world]
[}]

The output should be:

'{i\x05helloSi\x05world}'

[{]
   [i][5][hello][S][i][5][world]
[}]


Tested on:

Python 2.7.3 (default, Feb 27 2014, 19:58:35) 

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.4 LTS"

>>> simpleubjson.version
<module 'simpleubjson.version' from 
'/usr/local/lib/python2.7/dist-packages/simpleubjson-0.7.0-py2.7.egg/simpleubjso
n/version.pyc'>


Additional information:

According to Draft 9 specification (Type Reference - Container 
Types - Object Type):
"NOTE: The [S] (string) marker is omitted from each of the names
in the name/value pairings inside the object. The JSON specification
does not allow non-string name values, therefore the [S] marker is 
redundant and must not be used."

Also decoding ubjson binary conforming to the above rule fails with 
simpleubjson.

NOOP values should be skipped in sized containers (array and objects). 
Currently they are raises a ValueError exception.

Current decode operation counts Huge typed values as strings, not as numbers 
encoded as strings.

float('inf') and float('-inf') should be encoded as null as JSON does.

Otherwise many negative numbers (for example -100) that can be encoded as 
float/double will be encoded as huge.

Due to recursive decoding algorithm it's too easy to hit recursion limit. 
Attached file proves such bug. 

Using Python 2.6.1, I attempted to `pip install simpleubjson`.

I hit an exception at line 42 of setup.py, where README.rst is read and 
decoded. No encoding is given as an argument to the decode() method of the 
string, so "ascii" is assumed by Python 2.6.1.

Switching to ".decode('utf8')" seems to fix the problem.

According to the type reference (http://ubjson.org/type-reference/) and my 
understanding of issue 16 
(https://github.com/thebuzzmedia/universal-binary-json/issues/16), "[" and "{" 
are the new type markers for arrays and objects, and "A", "a", "O" and "o" are 
all being deprecated. Can simpleubjson be made to decode both versions of the 
format?

See benchmark: https://gist.github.com/3134391

What version of the product are you using? On what operating system?
0.5.0, Windows.