Extensions for JSONPath RW

jsonpath-rw-ext extends json-path-rw capabilities by adding multiple extensions. 'len' that allows one to get the length of a list. 'sorted' that returns a sorted version of a list, 'arithmetic' that permits one to make math operation between elements and 'filter' to select only certain elements of a list.

Each extensions will be proposed upstream and will stay here only if they are refused.

• Free software: Apache license
• Documentation: https://python-jsonpath-rw-ext.readthedocs.org/en/latest/
• Source: http://github.com/sileht/python-jsonpath-rw-ext

At the command line:

$ pip install jsonpath-rw-ext

Or, if you have virtualenvwrapper installed:

$ mkvirtualenv jsonpath-rw-ext
$ pip install jsonpath-rw-ext

To replace the jsonpath_rw parser by this one with:

import jsonpath_rw_ext
jsonpath_rw_ext.parse("$.foo").find(...)

Or:

from jsonpath_rw_ext import parser
parser.ExtentedJsonPathParser().parse("$.foo").find(...)

The jsonpath classes are not part of the public API, because the name/structure can change when they will be implemented upstream. Only the syntax shouldn't change.

Operations are done with python operators and allows types that python allows, and return [] if the operation can be done due to incompatible types.

When operators are used, a jsonpath must be be fully defined otherwise jsonpath-rw-ext can't known if the expression is a string or a jsonpath field, in this case it will choice string as type.

Example with data:

{
    'cow': 'foo',
    'fish': 'bar'
}

Arithmetic can be used against two lists if they have the same size.

Example with data:

{'objects': [
    {'cow': 2, 'cat': 3},
    {'cow': 4, 'cat': 6}
]}