Count percentage of keys in a weirdly nested json document. Very useful for working with mongodb. Works like variety.js but at the item-level.

nonemptykeypct.py

from __future__ import division
from functools import partial

def nonemptykeypct(x):
    """
    Returns the percentage of keys that have non-null values in an object (as decimal).
    
    Usage:
    >>> x = {'a': 'meow', 'b': {'c': 'asd'}, 'd': [{'e': 'stuff', 'f': 1}, {'e': 'more stuff', 'f': 2}], 'g': ''}
    >>> nonemptykeypct(x)
    0.8571428571428571
    """
    keys = list(listNkeys(x))
    vals = map(partial(getByDot,x),keys)
    dec = len(filter(None,vals))/len(keys)
    return(dec)