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
ticguide: quick + painless TESS observing information

ticguide: quick + painless TESS observing information Complementary to the TESS observing tool tvguide (see also WTV), which tells you if your target

Ashley Chontos 5 Nov 05, 2022
Goddard A collection of small, simple strategies for Freqtrade

Goddard A collection of small, simple strategies for Freqtrade. Simply add the strategy you choose in your strategies folder and run. ⚠️ General Crypt

Shane Jones 118 Dec 14, 2022
This application demonstrates IoTVAS device discovery and security assessment API integration with the Rapid7 InsightVM.

Introduction This repository hosts a sample application that demonstrates integrating Firmalyzer's IoTVAS API with the Rapid7 InsightVM platform. This

Firmalyzer BV 4 Nov 09, 2022
A Way to Use Python, Easier.

PyTools A Way to Use Python, Easier. How to Install Just copy this code, then make a new file in your project directory called PyTools.py, then paste

Kamran 2 Aug 15, 2022
Linux Backlight Manager

Is a program to manage your laptop keyboard backlights in linux. Tested on Tuxedo / Clevo / Monste models. Must be tested on other devices

Arshia Ihammi 4 Jan 14, 2022
WinBoost: Boost your windows system.

Winboost runs a complete checkup of your entire system locating junk files, speed-reducing issues and causes of any system or application glitches or crashes. Through a lot of research and testing, w

Smit Parmar 4 Oct 01, 2021
Turn crypto miner on/off depending on powerwall charge level

Mining Crypto with Tesla Solar and Powerwalls This script turns a crypto miner on and off when the Tesla Powerwall level drops/rises above a certain t

Matt 1 Nov 09, 2021
A student information management system in Python

Student-information-management-system 本项目是一个学生信息管理系统,这个项目是用Python语言实现的,也实现了图形化界面的显示,同时也实现了管理员端,学生端两个登陆入口,同时底层使用的是Redis做的数据持久化。 This project is a stude

liuyunfei 7 Nov 15, 2022
On this repo, you'll find every codes I made during my NSI classes (informatical courses)

👨‍💻 👩‍💻 school-codes On this repo, you'll find every codes I made during my NSI classes (informatical courses) French for now since this repo is d

EDM 1.15 3 Dec 17, 2022
A community based economy bot with python works only with python 3.7.8 as web3 requires cytoolz

A community based economy bot with python works only with python 3.7.8 as web3 requires cytoolz has some issues building with python 3.10

4 Jan 01, 2022
A 3-line lisp implementation

Nanolisp The download page of many a language harbors deep senses of forboding, of evil lurking in its native lair. You feel that the language is not

5 Jun 17, 2022
Password manager using MySQL and Python 3.10.2

Password Manager Password manager using MySQL and Python 3.10.2 Installation Install my-project with github git clone https://github.com/AyaanSiddiq

1 Feb 18, 2022
A TODO-list tool written in Python

PyTD A TODO-list tool written in Python. Its goal is to provide a stable posibility to get a good view over all your TODOs motivate you to actually fi

1 Feb 12, 2022
🗽 Like yarn outdated/upgrade, but for pip. Upgrade all your pip packages and automate your Python Dependency Management.

pipupgrade The missing command for pip Table of Contents Features Quick Start Usage Basic Usage Docker Environment Variables FAQ License Features Upda

Achilles Rasquinha 529 Dec 31, 2022
Compiler Final Project - Lisp Interpreter

Compiler Final Project - Lisp Interpreter

2 Jan 23, 2022
A log likelihood fit for extracting neutrino oscillation parameters

A-log-likelihood-fit-for-extracting-neutrino-oscillation-parameters Minimised the negative log-likelihood fit to extract neutrino oscillation paramete

Vid Homsak 1 Jan 23, 2022
Projeto de Jogo de dados em Python 3 onde é definido o lado a ser apostado e número de jogadas, pontuando os acertos e exibindo se ganhou ou perdeu.

Jogo de DadoX Projeto de script que simula um Jogo de dados em Python 3 onde é definido o lado a ser apostado (1, 2, 3, 4, 5 e 6) ou se vai ser um núm

Estênio Mariano 1 Jul 10, 2021
A performant state estimator for power system

A state estimator for power system. Turbocharged with sparse matrix support, JIT, SIMD and improved ordering.

9 Dec 12, 2022
Programmatic interface to Synapse services for Python

A Python client for Sage Bionetworks' Synapse, a collaborative, open-source research platform that allows teams to share data, track analyses, and collaborate

Sage Bionetworks 54 Dec 23, 2022
Hacking and Learning consistently for 100 days straight af.

#100DaysOfHacking Hacking and Learning consistently for 100 days straight af. [yes, no breaks except mental-break ones, Obviously.] This Repo is one s

FENIL SHAH 17 Sep 09, 2022