Jison is a tiny all-Powerful Fluent Json parser (Python3.6)
Jison is a simple but powerful parser for Json manipulation. It parses a Json string into a dictionary with syntax check like what Python's builtin method json.loads() does, or write to file like json.dump(), but beside these it provides many additional features:
(the object refers any Json key:value pair)
- Fluent dictionary of Json operation with dots
., for example:json.key1.key2.key3[0].key4 - String search under tree structure & hierarchical search (requires a 3rd party string match function which returns int/float in [0, 1] as parameter to work)
- Single Json object acquisition (get one Json object returned as dict)
- Multiple Json object acquisition (get all Json objects under any depth with same key value and return them as a list of dictionary)
- Json object deletion (delete any single Json object)
- Json object replacement (find and replace any single Json object)
Assuming sample.json has following content:
{"id": 1,
"params": [{"key1": "main",
"key2": "client",
"key3": "0/0",
"key4": 0,
"key5": 2},
{"c1": null, "c2": true, "key1": "sub", "key2": "parent"}],
"sample": "Jison"}# the initialization can be a Json string, a Python dict or from a `sample` + `.json` file
>>> jison = Jison(fp=open('sample.json', 'r'))# parse the Json and get dictionary
>>> json = jison.parse()
>>> json
""" result
{'id': 1,
'params': [{'key1': 'main',
'key2': 'client',
'key3': '0/0',
'key4': 0,
'key5': 2},
{'c1': None, 'c2': True, 'key1': 'sub', 'key2': 'parent'}],
'sample': 'Jison'}
"""# fluent json operation
>>> json.params[0].key1
""" result
'main'
"""# get single Json object in dictionary
>>> jison.get_object(obj_name='params')
""" result
{'params': [{'key1': 'main',
'key2': 'client',
'key3': '0/0',
'key4': 0,
'key5': 2},
{'c1': None, 'c2': True, 'key1': 'sub', 'key2': 'parent'}]}
"""# get multiple Json objects
>>> jison.get_multi_object(obj_name='key1')
""" result
[{'key1': 'main'}, {'key1': 'sub'}]
"""# get a list of multiple Json objects, or None if no key is matched
>>> key1, key99, key2 = jison.get_multi_object(obj_name=['key1', 'key99, 'key2'])
""" result
key1: [{'key1': 'main'}, {'key1': 'sub'}]
key99: None
key2: [{'key2': 'client'}, {'key2': 'parent'}]
"""# delete Json object and return a Jison instance, this operation will be written to file which the Json is loaded from
>>> jison.remove_object(obj_name='params').json
""" result
{'id': 1, 'sample': 'Jison'}
"""# replace a Json object with another and return a Jison instance, this operation will be written to file which the Json is loaded from
>>> jison.replace_object(obj_name='params', new_chunk={"replaced": "new_data"}).json
""" result
{'id': 1, 'replaced': 'new_data', 'sample': 'Jison'}
"""
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