通过pip安装包（含GitHub源）时，如何获取Git提交版本号及日期？

Great question—this kind of metadata is critical for reproducible debugging and test environment tracking, so let’s break this down into two key scenarios:

1. 从PyPI通过pip安装的软件包 #

Most PyPI packages don’t include Git commit details by default unless the maintainer intentionally embeds them during the build process (usually with tools like setuptools_scm or versioneer). Here’s how to check if the info is available:

• Check the package’s version attribute: Import the package and print its __version__ string. Packages with embedded Git info often show something like 1.4.2+gabc123, where abc123 is the short Git commit hash. For example:

  import requests
  print(requests.__version__)  # Might output 2.31.0+g123abc if built with Git metadata
  

• Inspect pip show output: Run pip show <package-name> and look at the Version field. If Git details are included, it might append the commit hash and date (e.g., 0.1.0+gdef456.d20240520, where d20240520 is the commit date in YYYYMMDD format).
• Check the PKG-INFO file: Find the package’s installation directory via pip show <package-name> → Location, then open the PKG-INFO file inside. The Version line here may contain commit metadata if it was included during the build.

If none of these show Git details, the package likely wasn’t built with this metadata. You’ll need to cross-reference the PyPI release notes with the package’s GitHub repo commit history to find the corresponding commit.

2. 从GitHub直接通过pip安装的软件包 #

When installing directly from GitHub (e.g., pip install git+https://github.com/username/repo.git or specifying a branch/tag/commit), the build pulls directly from the Git repo—so Git metadata is often included automatically (depending on the package’s build setup). Here’s how to retrieve it:

• Use pip show: Run pip show <package-name> and check the Version field. It will typically look like 0.0.0+gabc123.d20240520, where:
  • gabc123: Shortened Git commit hash
  • d20240520: Commit date in YYYYMMDD format
• Check the package’s version attribute: Import the package and print __version__—this will almost always include the commit hash if the package uses standard build tools.
• Verify the exact commit: If you installed a specific commit (e.g., pip install git+https://github.com/username/repo.git@abc123), the hash abc123 is your target commit—you can look up its date directly in the GitHub repo’s commit history.

If the package doesn’t show this info, the maintainer may have disabled Git metadata embedding in their build config. In that case, you can still find the commit by checking the repo’s branch history (if you installed a branch) or using the commit hash you specified during installation.

内容的提问来源于stack exchange，提问作者hildogjr