删除点子的缓存? [英] Removing pip's cache?

问题描述

我需要专门安装psycopg2 v2.4.1.我不小心做了:

I need to install psycopg2 v2.4.1 specifically. I accidentally did:

 pip install psycopg2

代替:

 pip install psycopg2==2.4.1

这将安装2.4.4，而不是早期版本.

That installs 2.4.4 instead of the earlier version.

现在，即使在我pip卸载psycopg2并尝试使用正确的版本重新安装后，pip似乎仍在重新使用它首次下载的缓存.

Now even after I pip uninstall psycopg2 and attempt to reinstall with the correct version, it appears that pip is re-using the cache it downloaded the first time.

如何强制pip清除其下载缓存并使用命令中包含的特定版本?

How can I force pip to clear out its download cache and use the specific version I'm including in the command?

推荐答案

如果使用的是pip 6.0或更高版本，请尝试添加

If using pip 6.0 or newer, try adding the --no-cache-dir option.

如果使用早于pip 6.0的pip，请使用pip install -U pip对其进行升级.

If using pip older than pip 6.0, upgrade it with pip install -U pip.

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