github.com/python/mypy/issues/1539

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https://github.com/python/mypy/issues/1539

Unconstrained type variable combined with isinstance() doesn't seem to work · Issue #1539 · python/mypy

Not sure this is a bug or not... from typing import TypeVar S = TypeVar('S') def parenthesize(s: S) -> S: if isinstance(s, str): return '(' + s + ')' elif isinstance(s, bytes): return b'(' + s + b')' else: raise TypeError("That's not a s...



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Unconstrained type variable combined with isinstance() doesn't seem to work · Issue #1539 · python/mypy

https://github.com/python/mypy/issues/1539

Not sure this is a bug or not... from typing import TypeVar S = TypeVar('S') def parenthesize(s: S) -> S: if isinstance(s, str): return '(' + s + ')' elif isinstance(s, bytes): return b'(' + s + b')' else: raise TypeError("That's not a s...



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https://github.com/python/mypy/issues/1539

Unconstrained type variable combined with isinstance() doesn't seem to work · Issue #1539 · python/mypy

Not sure this is a bug or not... from typing import TypeVar S = TypeVar('S') def parenthesize(s: S) -> S: if isinstance(s, str): return '(' + s + ')' elif isinstance(s, bytes): return b'(' + s + b')' else: raise TypeError("That's not a s...

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      Not sure this is a bug or not... from typing import TypeVar S = TypeVar('S') def parenthesize(s: S) -> S: if isinstance(s, str): return '(' + s + ')' elif isinstance(s, bytes): return b'(' + s + b'...
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