python's memory-saving dictionary data structure

Overview

ConstDict

python代替的Dict数据结构

若字典不会增加字段,只读/原字段修改
使用ConstDict可节省内存

Dict()内存主要消耗的地方:

1、Dict扩容机制,预留内存空间
2、Dict也是一个对象,内部会动态维护__dict__,增加slot类属性可以节省内容

节省内存大小:一半左右,字段越大节省越多
适用场景:需要生成大量的静态字典场景
缺点:根据字典的属性,生成类对象,再生产对象

python版本:python2.7

例子:

>> >>> class MonsterDict(constdict.ConstDict): ... __slots__ = test_dic.keys() >>> const_dic = MonsterDict(test_dic) >>> print(asizesof(test_dic)) (1192,) >>> print(asizesof(const_dic)) (584,) >>> print(const_dic) {'m_Defense': 4, 'm_Speed': 5, 'm_Hit': 7, 'm_Double': 8, 'm_Attack': 3, 'm_HP': 1, 'm_Dodge': 6, 'm_MP': 2} >>> print(const_dic.keys()) ['m_HP', 'm_Defense', 'm_Speed', 'm_Attack', 'm_Dodge', 'm_MP', 'm_Hit', 'm_Double'] >>> print(const_dic.values()) [1, 4, 5, 3, 6, 2, 7, 8] >>> const_dic["m_Dodge"] = 12456 >>> print(const_dic["m_Dodge"]) 12456 >>> print(const_dic.iteritems()) at 0x00000000094FA2C8> ">
>>> test_dic = {
...     "m_HP": 1,
...     "m_MP": 2,
...     "m_Attack": 3,
...     "m_Defense": 4,
...     "m_Speed": 5,
...     "m_Dodge": 6,
...     "m_Hit": 7,
...     "m_Double": 8,
... }
>>>
>>> class MonsterDict(constdict.ConstDict):
...     __slots__ = test_dic.keys()
    

>>> const_dic = MonsterDict(test_dic)
>>> print(asizesof(test_dic))
(1192,)
>>> print(asizesof(const_dic))
(584,)


>>> print(const_dic)
{'m_Defense': 4, 'm_Speed': 5, 'm_Hit': 7, 'm_Double': 8, 'm_Attack': 3, 'm_HP': 1, 'm_Dodge': 6, 'm_MP': 2}


>>> print(const_dic.keys())
['m_HP', 'm_Defense', 'm_Speed', 'm_Attack', 'm_Dodge', 'm_MP', 'm_Hit', 'm_Double']


>>> print(const_dic.values())
[1, 4, 5, 3, 6, 2, 7, 8]


>>> const_dic["m_Dodge"] = 12456
>>> print(const_dic["m_Dodge"])
12456


>>> print(const_dic.iteritems())

    
      at 0x00000000094FA2C8>

    
Owner
Grenter
Hi,i am Grenter
Grenter
Interfaces between napari and pymeshlab library to allow import, export and construction of surfaces.

napari-pymeshlab Interfaces between napari and the pymeshlab library to allow import, export and construction of surfaces. This is a WIP and feature r

Zach Marin 4 Oct 12, 2022
Ingestinator is my personal VFX pipeline tool for ingesting folders containing frame sequences that have been pulled and downloaded to a local folder

Ingestinator Ingestinator is my personal VFX pipeline tool for ingesting folders containing frame sequences that have been pulled and downloaded to a

Henry Wilkinson 2 Nov 18, 2022
Declarative and extensible library for configuration & code separation

ClassyConf ClassyConf is the configuration architecture solution for perfectionists with deadlines. It provides a declarative way to define settings f

83 Dec 07, 2022
Automated Content Feed Curator

Gathers posts from content feeds, filters, formats, delivers to you.

Alper S. Soylu 2 Jan 22, 2022
Monitoring of lake dynamics

slamcore_utils Description This repo contains the slamcore-setup-dataset script. It can be used for installing a sample dataset for offline testing an

10 Jun 23, 2022
The code for 2021 MGTV AI Challenge Anti Stealing Link, and the online result ranks 10th.

赛题介绍 芒果TV-第二届“马栏山杯”国际音视频算法大赛-防盗链 随着业务的发展,芒果的视频内容也深受网友的喜欢,不少视频网站和应用开始盗播芒果的视频内容,盗链网站不经过芒果TV的前端系统,跳过广告播放,且消耗大量的服务器、带宽资源,直接给公司带来了巨大的经济损失,因此防盗链在日常运营中显得尤为重要

tongji40 16 Jun 17, 2022
A Github Action for sending messages to a Matrix Room.

matrix-commit A Github Action for sending messages to a Matrix Room. Screenshot: Example Usage: # .github/workflows/matrix-commit.yml on: push:

3 Sep 11, 2022
pybind11 — Seamless operability between C++11 and Python

pybind11 — Seamless operability between C++11 and Python Setuptools example • Scikit-build example • CMake example pybind11 is a lightweight header-on

pybind 12.1k Jan 08, 2023
Python for Microscopists and other image processing enthusiasts

The YouTube channel associated with this code walks you through the entire process of learning to code in Python; all the way from basics to advanced machine learning and deep learning.

Dr. Sreenivas Bhattiprolu 2.3k Jan 01, 2023
System Design Assignments as part of Arpit's System Design Masterclass

System Design Assignments The repository contains a set of problem statements around Software Architecture and System Design as conducted by Arpit's S

Relog 1.1k Jan 09, 2023
A simple calculator made with tkinter.

Simple Calculator A simple calculator made with tkinter. Requirements None, only you need to have windows 😉 ...Enjoy! Installation Clone this reposit

Abhyush 2 Jan 11, 2022
OpenTable Reservation Maker For Python

OpenTable-Reservation-Maker The code that corresponds with this blog post on writing a script to make reservations for me on opentable Getting started

JonLuca De Caro 36 Nov 10, 2022
Educational Repo. Used whilst learning Flask.

flask_python Educational Repo. Used whilst learning Flask. The below instructions will be required whilst establishing as new project. Install Flask (

Jordan 2 Oct 15, 2021
Public Management System for ACP's 24H TT Fronteira 2021

CROWD MANAGEMENT SYSTEM 24H TT Vila de Froteira 2021 This python script creates a dashboard with realtime updates regarding the capacity of spectactor

VOST Portugal 1 Nov 24, 2021
A curated list of awesome things related to Pydantic! 🌪️

Awesome Pydantic A curated list of awesome things related to Pydantic. These packages have not been vetted or approved by the pydantic team. Feel free

Marcelo Trylesinski 186 Jan 05, 2023
Python script for the radio in the Junior float.

hoco radio 2021 Python script for the radio in the Junior float. Populate the ./music directory with 2 or more .wav files and run radio2.py. On the Ra

Kevin Yu 2 Jan 18, 2022
PyGo custom language, New but similar language programming

New but similar language programming. Now we are capable to program in a very similar language to Python but at the same time get the efficiency of Go.

Fernando Perez 4 Nov 19, 2022
La version open source du bot Discord Sblerboy

Sblerboy-Open-Source La version open source du bot Discord Sblerboy Sblerboy est un bot Discord permettant de jouer à des jeux de Gameboy directement

15 Nov 19, 2022
Test for using pyIIIFpres for rara magnetica project

raramagnetica_pyIIIFpres Test for using pyIIIFpres for rara magnetica project. This test show how to use pyIIIFpres for creating mannifest compliant t

Giacomo Marchioro 1 Dec 03, 2021
An open-source systems and controls toolbox for Python3

harold A control systems package for Python=3.6. Introduction This package is written with the ambition of providing a full-fledged control systems s

Ilhan Polat 157 Dec 05, 2022