mypy
TypeVisitor and Co now support allow_interpreted_subclasses=True
#9602

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TypeVisitor and Co now support allow_interpreted_subclasses=True #9602

msullivan merged 1 commit into python:master from patch-1

sobolevn4 years ago

Now these types can be extended from plugin code.
Previously it was impossible:

from mypy.type_visitor import TypeVisitor


class KindTranslator(TypeVisitor):
    ...

Was giving:

TypeError: interpreted classes cannot inherit from compiled traits

But, this is a very powerful tool. Some complex type manipulations do require this (or similar) tool.
For example:

I actually don't have any test plan at the moment. I would be very happy to receive any advice! 👍

TypeVisitor and Co now support allow_interpreted_subclasses=True

45451f2c

msullivan approved these changes on 2020-10-18

msullivan4 years ago

Yeah, this is a good idea. It'll increase our generated code size but shouldn't slow things down.

msullivan merged a9fa9ab4 into master 4 years ago

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