Function cannot be assigned to Hashable type

[MapleCCC]

Environment data

• Language Server version: 2021.2.3
• OS and version: Windows 18363.1316
• Python version: vanilla CPython 3.9.0

Expected behaviour

In Python, function is hashable. Given that obj is a function, the expression isinstance(obj, collections.abc.Hashable) evaluates to True.

Actual behaviour

Pylance reports that function cannot be assigned to type "Hashable".

Code Snippet / Additional information

from collections.abc import Hashable

def calculate_hash(obj: Hashable) -> int:
    return hash(obj)

def increment(x: int) -> int:
    return x + 1

# this statement prints True to the console
print(isinstance(increment, Hashable))

# this statement causes Pylance to report error
calculate_hash(increment)

[erictraut]

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

[jakebailey]

This issue has been fixed in version 2021.3.1, which we've just released. You can find the changelog here: https://github.com/microsoft/pylance-release/blob/main/CHANGELOG.md#202131-10-march-2021

[MapleCCC]

Thanks for your speed work and kind reply. I install the new version and the problem is resolved perfectly. I will close the issue then.