pip安装MarkupSafe包的0.0.0版

我正在尝试在 Docker 中运行的 Ubuntu 16.04 上为 python 3.5 安装 MarkupSafe。跑步pip3 install markupsafe==2.0.1给予

Installing collected packages: markupsafe
Successfully installed markupsafe-0.0.0


我尝试重新安装，我试过pip3 install用-U，我仍然得到的版本0.0.0。跑步pip3 show -f markupsafe给予

---
Metadata-Version: 2.0
Name: MarkupSafe
Version: 0.0.0
Summary: UNKNOWN
Home-page: UNKNOWN
Author: UNKNOWN
Author-email: UNKNOWN
Installer: pip
License: UNKNOWN
Location: /usr/local/lib/python3.5/dist-packages
Requires:
Classifiers:
Files:
MarkupSafe-0.0.0.dist-info/DESCRIPTION.rst
MarkupSafe-0.0.0.dist-info/INSTALLER
MarkupSafe-0.0.0.dist-info/METADATA
MarkupSafe-0.0.0.dist-info/RECORD
MarkupSafe-0.0.0.dist-info/WHEEL
MarkupSafe-0.0.0.dist-info/metadata.json
MarkupSafe-0.0.0.dist-info/top_level.txt
markupsafe/_speedups.cpython-35m-x86_64-linux-gnu.so
You are using pip version 8.1.1, however version 21.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.


所以我可以看到__init__.py和其余的py文件都丢失了。这是唯一导致问题的包。跑步pip3 list -l给出：

...
distro (1.5.0)
fasteners (0.16)
future (0.18.2)
idna (2.10)
Jinja2 (2.11.3)
MarkupSafe (0.0.0) <----
node-semver (0.6.1)
packaging (20.9)
patch-ng (1.17.4)
pluginbase (1.0.1)
Pygments (2.9.0)
...


（没有<----）