update() doesn't seem to work or I don't get it

[jbasko]

Given:

 from jsonpath_rw import parse
 a = parse('$.a')
 x = {'a': None}
 y = {}

Both of these raise NotImplementedError:

 a.update(x, 1)
 a.update(y, 1)

I'm on Python 3.6.6

UPDATE: Ok, so update is not meant to add new keys. Which leaves a.update(x, 1).

[srhopkins]

I think you're using pypi and not the repo?
Answered in #28 (comment)

They haven't had a release in a long time