fujson 0.1.1

Float formatting control for JSON encoding.

FuJSON: less decimals, more fuzzy JSON

FuJSON is a Python module that allows to control the formatting of floats when JSON encoding, typically to dial down the number of decimals.

It builds on the standard library's json.JSONEncoder and monkey-patches it to inject custom float formatting.

Usage

Simple dumps call:

>>> from fujson import dumps
>>> dumps({"x": 1.23456789}, float_format=".2f")
'{"x": 1.23}'

Reusable encoder:

>>> from fujson import FuJsonEncoder
>>> encoder = FuJsonEncoder(float_format=".2f")
>>> encoder.encode({"x": 1.23456789})
'{"x": 1.23}'
>>> encoder.encode([1.1, 2.22, 3.333, 4.4444])
'[1.10, 2.22, 3.33, 4.44]'

Do JSON dump with floats in scientific notation:

>>> from fujson import FuJsonEncoder
>>> encoder = FuJsonEncoder(float_format=".2e")
>>> encoder.encode([.123, 0.0000123, 12345678.9])
'[1.23e-01, 1.23e-05, 1.23e+07]'