Errors highlighted when using pipetools module

[leldershaw]

Environment data

• Language Server version: 2021.9.3
• OS and version: darwin x64
• Python version (and distribution if applicable, e.g. Anaconda): 3.9.2
• python.analysis.indexing: undefined
• python.analysis.typeCheckingMode: off

Expected behaviour

Use of the symbol | to pipe tasks together using the pipe function in the pipetools package causing no highlighted Pylance errors.

Actual behaviour

Pylance is highlighting an an error with the use of | symbol before a list call when piping tasks together using pipetools. It states that Alternative syntax for unions requires Python 3.10 or newer. The code runs with no issues in Python 3.9.2 as pipetools is imported. This error goes away if Python 3.10 is used, but should not occur for v3.9.2.

Logs

Python Language Server Log

No log output to provide

Code Snippet / Additional information

pip install pipetools

from pipetools import pipe, where

odd_sum = (pipe | 
            range | 
            where(lambda x: x % 2) |    #This pipe symbol shows an error as it is before a `list` call
            list |
            sum)

print(odd_sum (5))

[erictraut]

Thanks for the bug report. I agree this is a false positive error. It will be fixed in the next release.

[jakebailey]

This issue has been fixed in version 2021.9.4, which we've just released. You can find the changelog here: https://github.com/microsoft/pylance-release/blob/main/CHANGELOG.md#202194-29-september-2021