type warnings from pylance for image returned from pyexr.read()

[yellowtailfan]

When I use Numpy methods on an image returned from pyexr.read() then Pylance gives me a warning.

E.g. VS Code gives me a red squiggle on .shape on the last line of this code:

import pyexr
impath = 'image.exr'
im = pyexr.read(impath)
im.shape

The full warning from Pylance is:

Cannot access member "shape" for type "Dict[str, ndarray[Unknown, Unknown]]"
  Member "shape" is unknownPylance[reportAttributeAccessIssue](https://github.com/microsoft/pyright/blob/main/docs/configuration.md#reportAttributeAccessIssue)

I saw that you recently added type hints, however the issue seems to be that read() can return either an image or a dict.

A work around is to add a cast() wrapper:

from typing import cast
import pyexr
from numpy import ndarray

impath = 'image.exr'
im = cast(ndarray, pyexr.read(impath))
im.shape

This code gives no warnings from Pylance.

Instead of casting, adding an assertion also works:

assert isinstance(im, ndarray)