为什么 pip 安装我的包的旧版本? [英] Why is pip installing an old version of my package?

问题描述

我刚刚将我的包的新版本上传到 PyPi (1.2.1.0-r4):我可以下载 egg 文件并使用 easy_install 安装它，并且版本检查正确.但是当我尝试使用 pip 安装时，它会安装 1.1.0.0 版.即使我使用 pip install -Iv tome==1.2.1.0-r4 明确指定要 pip 的版本，我也会收到此消息:Requested tome==1.2.1.0-r4，但正在安装版本 1.1.0.0，但我不明白为什么.

I've just uploaded a new version of my package to PyPi (1.2.1.0-r4): I can download the egg file and install it with easy_install, and the version checks out correctly. But when I try to install using pip, it installs version 1.1.0.0 instead. Even if I explicitly specify the version to pip with pip install -Iv tome==1.2.1.0-r4, I get this message: Requested tome==1.2.1.0-r4, but installing version 1.1.0.0, but I don't understand why.

我仔细检查了 parse_version 并确认 1.2.1 上的版本字符串大于 1.1.0 上的版本字符串，如下所示:

I double checked with parse_version and confirmed that the version string on 1.2.1 is greater than that on 1.1.0 as shown:

那么知道为什么选择安装 1.1.0 吗?

So any idea why it's choosing to install 1.1.0 instead?

推荐答案

这是一个很好的问题.我花了很长时间才弄明白.这是对我有用的解决方案:

This is an excellent question. It took me forever to figure out. This is the solution that works for me:

显然，如果 pip 可以找到包的本地版本，pip 会更喜欢本地版本而不是远程版本.我什至断开了我的计算机与互联网的连接并再次尝试 - 当 pip 仍然成功安装该软件包并且甚至没有抱怨时，源显然是本地的.

Apparently, if pip can find a local version of the package, pip will prefer the local versions to remote ones. I even disconnected my computer from the internet and tried it again -- when pip still installed the package successfully, and didn't even complain, the source was obviously local.

就我而言，真正令人困惑的部分是 pip 在 上找到了较新的版本pypi，报告他们，然后继续并重新安装旧版本...... arggh.此外，它没有告诉我它在做什么，以及为什么.

The really confusing part, in my case, was that pip found the newer versions on pypi, reported them, and then went ahead and re-installed the older version anyway ... arggh. Also, it didn't tell me what it was doing, and why.

那么我是如何解决这个问题的?

So how did I solve this problem?

你可以使用 -v 标志让 pip 给出详细的输出......但一个是不够的.我对帮助进行了 RTFM 编辑，其中说您可以多次执行 -v，最多 3 次，以获得更详细的输出.所以我做到了:

You can get pip to give verbose output using the -v flag ... but one isn't enough. I RTFM-ed the help, which said you can do -v multiple times, up to 3x, for more verbose output. So I did:

pip install -vvv <my_package>

然后我查看了输出.一行引起了我的注意:

Then I looked through the output. One line caught my eye:

/tmp/pip-build-root/中的源代码版本为 0.0.11，满足要求

Source in /tmp/pip-build-root/ has version 0.0.11, which satisfies requirement <my_package>

我删除了那个目录，之后pip从pypi安装了最新版本.

I deleted that directory, after which pip installed the newest version from pypi.

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