gh-76007: Deprecate __version__ attribute in http.server

[hugovk]

In the issue@vstinner said:

IMO it's a good idea to use the Python version as the HTTP server version.

However, the Python version is already part of the combined version string: "BaseHTTP/0.6 Python/3.15.0".

This is made up of:

defversion_string(self): """Return the server software version string."""returnself.server_version+' '+self.sys_version

And the comments say server_version can be a name without a version:

# The Python system version, truncated to its first component.sys_version="Python/"+sys.version.split()[0] # The server software version. You may want to override this.# The format is multiple whitespace-separated strings,# where each string is of the form name[/version].server_version="BaseHTTP/"+__version__

So better to have something like "BaseHTTP Python/3.15.0" rather than "BaseHTTP/3.15.0 Python/3.15.0".

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• Issue: Misleading __version__ attribute of modules in standard library #76007

[vstinner]

LGTM