Using JSONPath in your Python application

There are several implementations of JSONPath for Python, too. The best is jsonpath-rw library, which provides language extensions so that paths are first-class language objects.

Getting ready

You'll need to install the jsonpath-rw library using pip:

pip install jsonpath-rw

Also, of course, you will need to include the necessary bits of the library when using them:

fromjsonpath_rw import jsonpath, parse

How to do it…

Here's a simple example using our store contents in the introduction stored in the variable object:

>>> object = { … }

>>>path = parse('$..title') 

>>> [match.value for match in path.find(object)]
['Sayings of the Century','Sword of Honour', 'Moby Dick', 'The Lord of the Rings']

How it works…

Processing a path expression using this library is a little like matching a regular expression; you parse out the JSONPath expression and then apply it to the Python object you want to slice using path's find method. This...