[flake8-pyi] Make example error out-of-the-box (PYI007, PYI008)

[MeGaGiGaGon]

Summary

Part of #18972

Both in one PR since they are in the same file

No playground links since the playground does not support rules that only apply to PYI files

PYI007

This PR makes unrecognized-platform-check (PYI007)'s example error out-of-the-box

Old example:

PS ~\Desktop\New_folder\ruff>echo @"

if sys.platform.startswith("linux"):
    # Linux specific definitions
    ...
else:
    # Posix specific definitions
    ...

"@ | uvx ruff check --isolated --preview --select PYI007 --stdin-filename "test.pyi" -

All checks passed!

New example:

PS ~\Desktop\New_folder\ruff>echo @"

import sys

if sys.platform is "linux":
    # Linux specific definitions
    ...
else:
    # Posix specific definitions
    ...

"@ | uvx ruff check --isolated --preview --select PYI007 --stdin-filename "test.pyi" -

test.pyi:3:4: PYI007 Unrecognized `sys.platform` check
  |
1 | import sys
2 |
3 | if sys.platform is "linux":
  |    ^^^^^^^^^^^^^^^^^^^^^^^ PYI007
4 |     # Linux specific definitions
5 |     ...
  |

Found 1 error.

Imports were also added to the "use instead" section

Note

PYI007 is really hard to trigger, it's only specifically in the case of a comparison where the operator is not != or ==. The original example raises complex-if-statement-in-stub (PYI002) with or without the import sys

PYI008

This PR makes unrecognized-platform-name (PYI008)'s example error out-of-the-box

Old example:

PS ~\Desktop\New_folder\ruff>echo @"

if sys.platform == "linus": ...

"@ | uvx ruff check --isolated --preview --select PYI008 --stdin-filename "test.pyi" -

All checks passed!

New example:

PS ~\Desktop\New_folder\ruff>echo @"

import sys

if sys.platform == "linus": ...

"@ | uvx ruff check --isolated --preview --select PYI008 --stdin-filename "test.pyi" -

test.pyi:3:20: PYI008 Unrecognized platform `linus`
  |
1 | import sys
2 |
3 | if sys.platform == "linus": ...
  |                    ^^^^^^^ PYI008
  |

Found 1 error.

Imports were also added to the "use instead" section

Note

The original example raises PYI002 instead

Test Plan

N/A, no functionality/tests affected

[github-actions]

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

✅ ecosystem check detected no linter changes.

[AlexWaygood]

thanks!