8000 Regression - Module "_typeshed" has no attribute "SupportsLessThan" · Issue #12355 · python/mypy · GitHub
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Regression - Module "_typeshed" has no attribute "SupportsLessThan" #12355

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Zeckie opened this issue Mar 15, 2022 · 1 comment · Fixed by #12356
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Regression - Module "_typeshed" has no attribute "SupportsLessThan" #12355

Zeckie opened this issue Mar 15, 2022 · 1 comment · Fixed by #12356
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bug mypy got something wrong

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@Zeckie
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Zeckie commented Mar 15, 2022 •
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Bug Report

The example of using SupportsLessThan in the documentation does not work in mypy 0.941 or 0.940.

To Reproduce

https://mypy-play.net/?mypy=0.931&python=3.10&gist=6ad43abe09b33cd9dceea02d40c0224d

Works correctly on 0.931, but not 0.941 or 0.940.
@Zeckie Zeckie added the bug mypy got something wrong label Mar 15, 2022
AlexWaygood added a commit to AlexWaygood/mypy that referenced this issue Mar 15, 2022
@AlexWaygood
Correct example in runtime_troubles.rst
ee11c81 
`SupportsLessThan` was removed from `_typeshed` in python/typeshed#6583 and replaced with a new `SupportsRichComparison` type, which better reflects the types at runtime.

Fixes python#12355
@AlexWaygood AlexWaygood mentioned this issue Mar 15, 2022
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We got rid of SupportsLessThan from _typeshed in python/typeshed#6583, because it wasn't doing a great job at describing the various types at runtime it was trying to describe. We replaced it with a new SupportsRichComparison type, which is a little more complicated, but does a much better job at describing the types at runtime.

97littleleaf11 pushed a commit that referenced this issue Mar 15, 2022
@AlexWaygood
Correct example in runtime_troubles.rst (#12356)
b09683c 
`SupportsLessThan` was removed from `_typeshed` in 
python/typeshed#6583 and replaced with 
a new `SupportsRichComparison` type, which better reflects the 
types at runtime.

Fixes #12355
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Correct example in runtime_troubles.rst AlexWaygood/mypy
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