Reject scalar hypersphere uniform pdf inputs cleanly

[FlorianPfaff]

Summary

• Guard rank-0 hypersphere uniform pdf inputs before reading shape[-1].
• Add a regression test showing scalar inputs now raise the intended ValueError instead of leaking IndexError.

Bug fixed

AbstractHypersphereSubsetUniformDistribution.pdf() accessed xs.shape[-1] unconditionally. For scalar inputs such as 1.0, NumPy arrays have shape (), so the validator raised IndexError before PyRecEst could report the documented invalid-shape ValueError.

Validation

• Inspected main..bugfix/hyperspherical-scalar-shape: 2 files changed, +18/-1.
• Added tests/distributions/test_hypersphere_uniform_scalar_pdf.py.
• Full tests were not run locally because this execution environment cannot resolve github.com for cloning/installing the repository.

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	57.97s
✅ JSON	prettier	7	0	0	0	0.95s
✅ JSON	v8r	7		0	0	3.43s
✅ MARKDOWN	markdownlint	68	0	0	0	1.16s
✅ MARKDOWN	markdown-table-formatter	68	0	0	0	0.34s
✅ PYTHON	black	1204	35	0	0	46.59s
✅ PYTHON	isort	1204	68	0	0	2.6s
✅ REPOSITORY	checkov	yes		no	no	37.78s
✅ REPOSITORY	gitleaks	yes		no	no	9.43s
✅ REPOSITORY	git_diff	yes		no	no	0.16s
✅ REPOSITORY	secretlint	yes		no	no	34.08s
✅ REPOSITORY	syft	yes		no	no	3.69s
✅ REPOSITORY	trivy-sbom	yes		no	no	5.33s
✅ REPOSITORY	trufflehog	yes		no	no	13.95s
✅ YAML	prettier	11	0	0	0	0.5s
✅ YAML	v8r	11		0	0	7.78s
✅ YAML	yamllint	11		0	0	0.34s

Notices

📣 MegaLinter 9.5.0 is out! Discover the new features and security recommendations in the release announcement. (Skip this info by defining SECURITY_SUGGESTIONS: false)

See detailed reports in MegaLinter artifacts

Your project could benefit from a custom flavor, which would allow you to run only the linters you need, and thus improve runtime performances. (Skip this info by defining FLAVOR_SUGGESTIONS: false)

• Documentation: Custom Flavors
• Command: npx mega-linter-runner@9.5.0 --custom-flavor-setup --custom-flavor-linters PYTHON_BLACK,PYTHON_ISORT,COPYPASTE_JSCPD,JSON_V8R,JSON_PRETTIER,MARKDOWN_MARKDOWNLINT,MARKDOWN_MARKDOWN_TABLE_FORMATTER,REPOSITORY_CHECKOV,REPOSITORY_GIT_DIFF,REPOSITORY_GITLEAKS,REPOSITORY_SECRETLINT,REPOSITORY_SYFT,REPOSITORY_TRIVY_SBOM,REPOSITORY_TRUFFLEHOG,YAML_PRETTIER,YAML_YAMLLINT,YAML_V8R

Show us your support by starring ⭐ the repository