Fix pyperformance venv (w/o any subcommand) exception - #454

2026年01月26日T19:29:17.403748000+0100 maurycy@gimel /Users/maurycy/work/pyperformance (fix-428-venv) % uv run --python 3.14 --with . python -m pyperformance venv
usage: pyperformance [-h] [-V] {run,show,compare,list,list_groups,compile,compile_all,upload,venv} ...
Compares the performance of baseline_python with changed_python and prints a report.
positional arguments:
 {run,show,compare,list,list_groups,compile,compile_all,upload,venv}
 run Run benchmarks on the running python
 show Display a benchmark file
 compare Compare two benchmark files
 list List benchmarks of the running Python
 list_groups List benchmark groups of the running Python
 compile Compile and install CPython and run benchmarks on installed Python
 compile_all Compile and install CPython and run benchmarks on installed Python on all branches and revisions of CONFIG_FILE
 upload Upload JSON results to a Codespeed website
 venv Actions on the virtual environment
options:
 -h, --help show this help message and exit
 -V, --version show program's version number and exit

[1] 2026年03月23日T10:53:38.530937000+0100 maurycy@gimel /Users/maurycy/src/github.com/maurycy/pyperformance (main) % uv run --python 3.14 --with . python -m pyperformance venv
Traceback (most recent call last):
 File "<frozen runpy>", line 198, in _run_module_as_main
 File "<frozen runpy>", line 88, in _run_code
 File "/Users/maurycy/src/github.com/maurycy/pyperformance/pyperformance/__main__.py", line 3, in <module>
 pyperformance.cli.main()
 ~~~~~~~~~~~~~~~~~~~~~~^^
 File "/Users/maurycy/src/github.com/maurycy/pyperformance/pyperformance/cli.py", line 422, in main
 _main()
 ~~~~~^^
 File "/Users/maurycy/src/github.com/maurycy/pyperformance/pyperformance/cli.py", line 371, in _main
 info = _pythoninfo.get_info(options.python)
 ^^^^^^^^^^^^^^
AttributeError: 'Namespace' object has no attribute 'python'