mapperr - mapping across dictionary and class object, recursively
If you are using python for implementing protocols, cache management, nosql or sql database manupilation with the object oriented concepts in your code, mapperr can handle your object in your way, easily.
Installation
via pip
pip3 install mapperrvia direct setup
pip3 install setuptools
python3 setup.py sdist bdist_wheel
pip3 install dist/mapperr-0.0.1-py3-none-any.whlUsage
Your classes' attributes are needed to be annotated with their types like int, str, Book, List[Book]. Parameterized constructors are not suitable, you can use it with plain objects which has most trash work. You can also fill your required options with param op_required as string list.
to_obj( dict_data: dict, destination_class: Type ) -> object
to_dict( obj: object ) -> dict
from typing import List
from pprint import pprint
from mapperr import to_dict, to_obj
class Book:
_id: int
title: str
op_required: list = ['_id', 'title']
class BookShelf:
code: str
books: List[Book]
class Library:
name: str
book_shelfs: List[BookShelf]
def retrieve_library_from_the_source() -> dict:
return {
"name" : "Hogwarts Library",
"book_shelfs" : [
{
"code" : "A1",
"books" : [
{
"_id" : 0,
"title" : "Defence Against the Dark Arts"
},
{
"_id" : 1,
"title" : "Potions"
},
]
},
{
"code" : "A2",
"books" : [
{
"_id" : 3,
"title" : "Charms"
},
{
"_id" : 4,
"title" : "Herbology"
},
]
}
]
}
def send_library_to_the_source(data: dict):
pprint(data)
lib: Library = to_obj(retrieve_library_from_the_source(), Library)
new_book = Book()
new_book._id = 5
new_book.title = "Alchemy"
lib.book_shelfs[0].books.append(new_book)
send_library_to_the_source( to_dict(lib) )You can add your recursive type definitions into your class by using string variables and you can also use superclasses.
class Person:
name: str
identity: int
age: int
mother: 'Person'
father: 'Person'
friends: List['Person']
class Employee(Person):
company_name: str
