decimal-monkeypatch

A Python module based on autowrapt for:

• Interpreter-wide monkey patching slow decimal module to cdecimal on Python 2 with preservation of the functionality of the boto lib.
• psycopg2 json to ujson replacement
• Custom deepcopy for boto.dynamodb2.items. This patch can give huge performance benefits if you know expected data structure.

Usage

pip install decimal-monkeypatch

• set AUTOWRAPT_BOOTSTRAP=decimal env variable for decimal patch activation
• set AUTOWRAPT_BOOTSTRAP=psycopg2 env variable for psycopg2 patch activation
• set AUTOWRAPT_BOOTSTRAP=dynamodb env variable for dynamodb patch activation
• set AUTOWRAPT_BOOTSTRAP=decimal,psycopg2,dynamodb for all at once

Additional reading

• Swapping decimal for cdecimal on Python 2
• Automatic patching of Python applications
• Discussion about json module selection in psycopg2
• SO deepcopy question

WARNING

Tested on only this configuration:
Python 2.7.12+
boto 2.48.0
m3-cdecimal 2.3
psycopg2-binary 2.7.4
ujson 1.35