Python JSON Get
Get values from JSON objects usings a path expression. Optional type checking is possible:
>>> from jsonget import json_get, json_get_default, JList
>>> j = {
... "foo": {"num": 3.4, "s": "Text"},
... "arr": [10, 20, 30],
... }
>>> json_get(j, "/foo/num")
3.4
>>> json_get(j, "/arr[1]")
20
>>> json_get(j, "/foo/unknown")
Traceback (most recent call last):
...
ValueError: JSON path '/foo/unknown' not foundValues are optionally checked against one of the following types:
str, int, float, bool, list, and dict.
Checking for null values is not supported:
>>> json_get(j, "/foo/num", str)
Traceback (most recent call last):
...
TypeError: wrong JSON type str != floatfloat will match any number, int will only match numbers without
a fractional part:
>>> json_get(j, "/foo/num", float)
3.4
>>> json_get(j, "/foo/num", int)
Traceback (most recent call last):
...
TypeError: wrong JSON type int != floatAdditionally, the type of list values can be checked:
>>> json_get(j, "/arr", JList(int))
[10, 20, 30]json_get_default() can be used to return a default value if a given
path does not exist:
>>> json_get_default(j, "/bar", "default value")
'default value'
