Support parenthesized parameters for del

[Azureblade3808]

Environment data

• Language Server version: 2021.6.3-pre.1
• OS and version: Windows 7
• Python version (& distribution if applicable, e.g. Anaconda): Python 3.8.10 Anaconda

Sample

a = 1
b = 2
del (a, b)

Expected behavior

No errors/warnings.

Actual behavior

Got "Expression cannot be deleted | Pylance(reportGeneralTypeIssues)".

[erictraut]

Thanks for the bug report. This will be fixed in the next release.

[Azureblade3808]

I had a del statement which deletes many variables at once, and the code line was wrapped using parenthesis by code formatter 'black', then it was reported by Pylance. The warning could be prevented by breaking the del statement into multiple ones which would not get wrapped. But I think it would be more convenient if Pylance could handle this usage.

[bschnurr]

This issue has been fixed in version 2021.6.3, which we've just released. You can find the changelog here: https://github.com/microsoft/pylance-release/blob/main/CHANGELOG.md#202163-23-june-2021