jsonpath-rw-ext

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

Quick Start

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(...)

Shortcut functions for getting only the matched values:

import jsonpath_rw_ext as jp
print jp.match('$.cow[*]', {'cow': ['foo', 'bar'], 'fish': 'foobar'})
# prints ['foo', 'bar']

print jp.match1('$.cow[*]', {'cow': ['foo', 'bar'], 'fish': 'foobar'})
# prints 'foo'

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.

Extensions

name	Example
len	$.objects.`len`
sub	$.field.`sub(/foo\\+(.*)/, \\1)`
split	$.field.`split(+, 2, -1)` $.field.`split(sep, segement, maxsplit)`
sorted	$.objects.`sorted` $.objects[\some_field] $.objects[\some_field,/other_field]
filter	$.objects[?(@some_field > 5)] $.objects[?(some_field = “foobar”)] $.objects[?(some_field ~ “regexp”)] $.objects[?(some_field > 5 & other < 2)]
arithmetic (-+*/)	$.foo + “_” + $.bar $.foo * 12 $.objects[].cow + $.objects[].cat

About arithmetic and string

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'
}

cow + fish returns cowfish
$.cow + $.fish returns foobar
$.cow + “_” + $.fish returns foo_bar
$.cow + “_” + fish returns foo_fish

About arithmetic and list

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}
]}

$.objects[*].cow + $.objects[*].cat returns [6, 9]

Release files for jsonpath-rw-ext 1.2.2

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for jsonpath-rw-ext 1.2.2
File	Size	Uploaded
jsonpath-rw-ext-1.2.2.tar.gz	20.6 kB	Jul 12, 2019	Details

Built distribution (wheel)

Table of built distributions (wheels) for jsonpath-rw-ext 1.2.2
File	Interpreter	ABI	Platform	Reset
jsonpath_rw_ext-1.2.2-py2.py3-none-any.whl 19.2 kB Jul 12, 2019	Python 2, Python 3	none	any	Details

Total release size: 39.8 kB

Release files / jsonpath-rw-ext-1.2.2.tar.gz

Download URL	jsonpath-rw-ext-1.2.2.tar.gz
Size	20.6 kB
Tags	Source
SHA-256 checksum How to use checksums	`a9e44e803b6d87d135b09d1e5af0db4d4cf97ba62711a80aa51c8c721980a994`
BLAKE2b-256 checksum How to use checksums	`d5f05d865b2543be45e3ab7a8c2ae8dfa5c3e56cfdd48f19d4455eb02f370386`
Upload date	Jul 12, 2019
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/1.13.0 pkginfo/1.5.0.1 requests/2.20.1 setuptools/41.0.1 requests-toolbelt/0.9.1 tqdm/4.32.2 CPython/3.7.3`

Release files / jsonpath_rw_ext-1.2.2-py2.py3-none-any.whl

Download URL	jsonpath_rw_ext-1.2.2-py2.py3-none-any.whl
Size	19.2 kB
Tags	Python 2 Python 3
SHA-256 checksum How to use checksums	`0947e018c4e6d46f9d04c56487793c702eb225fa252891aa4ed41a9ca26f3d84`
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Upload date	Jul 12, 2019
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/1.13.0 pkginfo/1.5.0.1 requests/2.20.1 setuptools/41.0.1 requests-toolbelt/0.9.1 tqdm/4.32.2 CPython/3.7.3`