[issue25737] array is not a Sequence

[berdario]

berdario added the comment:

Ok, basically `Sequence` does not implement `__subclasshook__` and is manually hardcoded to

```
Sequence.register(tuple)
Sequence.register(str)
Sequence.register(range)
Sequence.register(memoryview)
```


This is not by design, is it?

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25737>
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