Annotation of attributes of an object.
已回答
Hello, is there a chance that trying of setting wrong type of value to the attribute of the object will cause typeerror?

Also this example from here: https://www.python.org/dev/peps/pep-0526/ does not work.

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Please vote for the corresponding feature request https://youtrack.jetbrains.com/issue/PY-20811
Done.