[英]How does pip detect URL of archive if version of package is not provided?
When you run pip install somepackage
, pip downloads the latest version of somepackage
. 当您运行
pip install somepackage
,PIP下载最新版本的somepackage
。
All archives on PYPI have names like somepackage-XXtar.gz
. PYPI上的所有档案均具有
somepackage-XXtar.gz
类somepackage-XXtar.gz
。 How does pip know what X
s are? 点如何知道
X
是什么? Ie how does it detect the URL of the archive to download? 即,它如何检测要下载的档案的URL?
I believe PIP relies on the containing directory being readable/listable. 我相信PIP依赖于包含可读/可列出目录。 It then uses that directory listing to know all versions of the package, it's then easy to work out what the latest version is.
然后,它使用该目录列表来了解软件包的所有版本,然后很容易确定最新版本。
For example: https://pypi.python.org/packages/source/D/Django/ 例如: https : //pypi.python.org/packages/source/D/Django/
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