[communication] SyntaxWarning: "invalid escape sequence"

[BlackMercy]

Describe the bug

After updating to Azure CLI 2.80.0 (coming from 2.74.0 with clean install), I am seeing multiple SyntaxWarning: invalid escape sequence messages when running communication extension commands.

While functionality remains intact, these warnings clutter the output.

Actual Behavior

When running any az communication command, the following warnings are printed:

.../azext_communication/aaz/latest/communication/_create.py:50: SyntaxWarning: invalid escape sequence '\w'
  pattern="^[-\w]+$",
.../azext_communication/aaz/latest/communication/_delete.py:52: SyntaxWarning: invalid escape sequence '\w'
  pattern="^[-\w]+$",
.../azext_communication/aaz/latest/communication/_link_notification_hub.py:50: SyntaxWarning: invalid escape sequence '\w'
  pattern="^[-\w]+$",

(and similar warnings in _list_key.py, _regenerate_key.py, _show.py, etc.)

Related command

az communication email domain sender-username create
az communication email list

Errors

.../azext_communication/aaz/latest/communication/_create.py:50: SyntaxWarning: invalid escape sequence '\w'
pattern="^[-\w]+$",
.../azext_communication/aaz/latest/communication/_delete.py:52: SyntaxWarning: invalid escape sequence '\w'
pattern="^[-\w]+$",
.../azext_communication/aaz/latest/communication/_link_notification_hub.py:50: SyntaxWarning: invalid escape sequence '\w'
pattern="^[-\w]+$",

Issue script & Debug output

N/A

Expected behavior

No SyntaxWarnings

Environment Summary

• Azure CLI Core: 2.80.0
• Communication Extension: 1.14.0
• OS: Windows 11

Additional context

No response

[yonzhan]

Thank you for opening this issue, we will look into it.

[microsoft-github-policy-service]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @acsdevx-msft.