Wrong warning with OrderedSet

[nicoulaj]

Steps to reproduce

1. Use OrderedSet 2.0.2
2. Declare a variable such as self.children: OrderedSet[Context] = OrderedSet()

Current behavior

pylint emits a warning:

context/_context_impl.py:26: [E1136(unsubscriptable-object), Context.__init__] Value 'OrderedSet' is unsubscriptable

Expected behavior

No warning should be emitted, and my IDE (pycharm 2017.2.1) seems to be inferring the types correctly.
The OrderedSet class extends collections.MutableSet, so I would expect it to work out of the box.

pylint --version output

pylint 1.7.2, 
astroid 1.5.3
Python 3.6.2 (default, Aug 11 2017, 11:59:59) 
[GCC 7.1.1 20170622 (Red Hat 7.1.1-3)]

[nicoulaj]

I was wrong, pycharm does emit a warning: Class 'type' does not define '__getitem__', so the '[]' operator cannot be used on its instances.
So I guess this must be fixed in OrderedSet ?

[PCManticore]

Pylint is correct here, OrderedSet does not implement __getitem__ for classes, so that code will in fact raise an error when evaluated. This does not happen currently since annotations are not evaluated.