問題描述

我是 Python 新手，我只是想了解它的包是如何工作的.大概 eggs 是某種包裝機(jī)制，但什么是它們所扮演角色的快速概述，可能是關(guān)于它們?yōu)槭裁从杏靡约叭绾蝿?chuàng)建它們的一些信息?

I'm new to Python and I'm just trying to understand how its packages work. Presumably eggs are some sort of packaging mechanism, but what would be a quick overview of what role they play and may be some information on why they're useful and how to create them?

推薦答案

注意:雞蛋包裝已被車輪包裝取代.

與Java中的.jar文件的概念相同，它是一個(gè).zip文件，其中一些元數(shù)據(jù)文件重命名為.egg，用于分發(fā)代碼作為包.

Same concept as a .jar file in Java, it is a .zip file with some metadata files renamed .egg, for distributing code as bundles.

具體來說:Python Eggs的內(nèi)部結(jié)構(gòu)

Python 蛋"是一個(gè)邏輯結(jié)構(gòu)，體現(xiàn)了一個(gè)Python 項(xiàng)目的特定版本，包括其代碼、資源、和元數(shù)據(jù).有多種格式可用于物理編碼一個(gè) Python 蛋，其他的可以開發(fā).然而，Python 雞蛋的一個(gè)關(guān)鍵原則是它們應(yīng)該是可發(fā)現(xiàn)的，并且可導(dǎo)入.也就是說，Python 應(yīng)用程序應(yīng)該可以輕松有效地找出系統(tǒng)上存在哪些雞蛋，以及以確保所需的雞蛋內(nèi)容是可導(dǎo)入的.

A "Python egg" is a logical structure embodying the release of a specific version of a Python project, comprising its code, resources, and metadata. There are multiple formats that can be used to physically encode a Python egg, and others can be developed. However, a key principle of Python eggs is that they should be discoverable and importable. That is, it should be possible for a Python application to easily and efficiently find out what eggs are present on a system, and to ensure that the desired eggs' contents are importable.

.egg 格式非常適合分發(fā)和簡(jiǎn)單卸載或升級(jí)代碼，因?yàn)樵擁?xiàng)目本質(zhì)上是自包含在單個(gè)目錄或文件中，不與任何其他項(xiàng)目的代碼或資源.這也使得擁有同時(shí)安裝一個(gè)項(xiàng)目的多個(gè)版本，這樣各個(gè)程序可以選擇他們希望使用的版本.

The .egg format is well-suited to distribution and the easy uninstallation or upgrades of code, since the project is essentially self-contained within a single directory or file, unmingled with any other projects' code or resources. It also makes it possible to have multiple versions of a project simultaneously installed, such that individual programs can select the versions they wish to use.

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