larch-pickle 1.0.3

A secure python pickle replacement

## larch.pickle - A secure python pickle replacement

This module can be used as transparent replacement for pickle. It does not suffer the
vulnerability of original pickle see: http://michael-rushanan.blogspot.de/2012/10/why-python-pickle-is-insecure.html.

Difference to python pickle:
- no memo attribute
- no clear_memo()
- no persistent_id interface
- byte string are always assumed to be utf-8 encoded
- `Pickler` has an additional `with_refs` parameter. Setting `with_refs`
to `false`, the pickler will ignore object references, this results in
an extra speed boost.


### Installation
larch-pickle needs the boost library for compilation. If boost
is not in the standard include path install it with:

`python build_ext -I /path/to/boost install`


### Speed compared to some other pickler packages

#### dump Dictionaries (10 loops)
| Package | Seconds | Size |
|:-------------|----------:|---------:|
| marshal | 0.454694 | 15975952 |
| larch-pickle | 0.586087 | 9714411 |
| ujson | 1.94068 | 13141354 |
| msgpack | 1.95001 | 9843459 |
| json | 2.1489 | 14365311 |
| cPickle | 4.29243 | 12781866 |
#### load Dictionaries (10 loops)
| Package | Seconds |
|:-------------|----------:|
| msgpack | 1.43802 |
| larch-pickle | 1.53487 |
| marshal | 1.56561 |
| cPickle | 2.44472 |
| ujson | 2.48116 |
| json | 5.78576 |
#### dump Objects (10 loops)
| Package | Seconds | Size |
|:-------------|----------:|---------:|
| larch-pickle | 0.968418 | 10094415 |
| ujson | 2.56079 | 13331354 |
| cPickle | 4.8822 | 12961909 |
#### load Objects (10 loops)
| Package | Seconds |
|:-------------|----------:|
| larch-pickle | 1.6902 |
| ujson | 2.51544 |
| cPickle | 2.58821 |
#### dump Strings (10 loops)
| Package | Seconds | Size |
|:-------------|----------:|---------:|
| marshal | 0.582926 | 32826787 |
| msgpack | 0.980826 | 29464951 |
| json | 1.18866 | 31966498 |
| ujson | 1.51086 | 30987525 |
| larch-pickle | 1.70253 | 17054823 |
| cPickle | 4.21949 | 19871780 |
#### load Strings (10 loops)
| Package | Seconds |
|:-------------|----------:|
| larch-pickle | 0.431427 |
| marshal | 0.449067 |
| msgpack | 0.549114 |
| cPickle | 1.70127 |
| ujson | 1.88499 |
| json | 3.17667 |
#### dump Lists (10 loops)
| Package | Seconds | Size |
|:-------------|----------:|---------:|
| marshal | 0.879272 | 42703907 |
| larch-pickle | 3.11243 | 21005671 |
| json | 3.27417 | 35917346 |
| ujson | 4.34822 | 34938373 |
| msgpack | 4.44871 | 31440375 |
| cPickle | 15.2853 | 33700258 |
#### load Lists (10 loops)
| Package | Seconds |
|:-------------|----------:|
| larch-pickle | 2.12795 |
| marshal | 2.14723 |
| msgpack | 2.41231 |
| ujson | 4.27773 |
| json | 5.29066 |
| cPickle | 8.1543 |