objectify-json

Objectify JSON

Make accessing JSON like data more convenient.

Features

• Access dict value via dot . (data.a.b.c).
• Always return ObjectifyJSON type, which holds the data with type of dict, list or any other primitive types.
• Use x._data to get the real data.
• Always return ObjectifyJSON(None) if doesn't exist.
• An CLI tool named object to process JSON data.

Install

pip3 install objectify-json

Example

See test.py

Functions to process data in batch

• The return value is always ObjectifyJOSN too!
• The return value of lambda funtions will always be unwrapped to primitive types.
• Most of the fn_* functions accept optional unwrap parameter to enable passing the underlying value as primitive types to lambda. Default is False.
• When used in CLI tool, if it failed getting the property by property name, e.g. map, it will retry to get function with prefix fn_ added to the name. This will simplify writting the CLI command.

Common

Following methods of ObjectifyJOSN accept optional unwrap to unwrap ObjectifyJOSN data to the underlying built-in data, the default value is False.

• fn_map(fn, unwrap=False): map on the iterator
• fn_reduce(fn, initializer=None, unwrap=False): reduce on the iterator, lambda as the first positional parameter, optional initializer parameter will be passed to built-in reduce.
• fn_lambda(fn, unwrap=False): value in-and-out
• fn_filter(fn, unwrap=False): filter on the iterator

Dict

• fn_keys(): Return keys as list.
• fn_values(): Return values as list.
• fn_items(): Return items as list. Element has the type tuple, e.g. ("key", "value").
• fn_include_keys(keys): Filter dict. Keep the keys you give.
• fn_exclude_keys(keys): Filter dict. Remove the keys you give.
• fn_filter_by_value(fn): Filter dict. Filter by the lambda you give, which accept the value of dict item.
• fn_filter_by_kv(fn): Filter dict. Filter by the lambda you give, which accept key and value two variables.
• fn_update(key, fn, unwrap=False): Update dict value. The lambda you give accept the origin value and return a new value.
• fn_items_update(fn, unwrap=False): Update dict value. The lambda you give accept key and value two variables and return a new value.
• fn_rename(mapping): Update dict key. The mapping is a list of two-elements list.

List

• fn_sort(fn): Sort the list in place. The lambda you give will be passed as key argument to the sort method of list.
• fn_dedup(fn=None, all=True): Dedup the elements in list. If all if False, the duplication will checked by comparing current value between last value, else will compare to all appeared before.