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Akuli opened this issue Jun 11, 2021 · 2 comments · Fixed by #5690
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cachetools.func doesn't work #5617

Akuli opened this issue Jun 11, 2021 · 2 comments · Fixed by #5690
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stubs: false positive Type checkers report false errors

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@Akuli
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Akuli commented Jun 11, 2021 •
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Works at runtime, two mypy errors:

from cachetools.func import ttl_cache
@ttl_cache(ttl=0.100, maxsize=10)  # Argument 1 has incompatible type "Callable[[str], int]"; expected <nothing>
def foo(lol: str) -> int:
    return int(lol)

print(foo("123"))  # <nothing> not callable

But it works if I change the first lines to this:

from cachetools import cached, TTLCache
@cached(TTLCache(ttl=0.100, maxsize=10))
@srittau srittau added the stubs: false positive Type checkers report false errors label Jun 11, 2021
@srittau
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srittau commented Jun 11, 2021

We should try using Callable[[_F], _F] directly, instead of using _RET[_F].

@hauntsaninja
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hauntsaninja commented Jun 11, 2021 •
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Same deal as #5482 (and broken by the same change)

gkoller added a commit to Amsterdam/dataservices-airflow that referenced this issue Jun 22, 2021
@gkoller
AB#8701 Pin MyPy to version 0.812.
02748e7 
Version >= 0.900 has a number of issues that bite use:
- python/typeshed#5617
- it doesn't honor `# type: ignore[misc]` in those circumstances
gkoller added a commit to Amsterdam/dataservices-airflow that referenced this issue Jun 22, 2021
@gkoller
AB#8701 Pin MyPy to version 0.812.
f281305 
Version >= 0.900 has a number of issues that bite use:
- python/typeshed#5617
- it doesn't honor `# type: ignore[misc]` in those circumstances
gkoller added a commit to Amsterdam/dataservices-airflow that referenced this issue Jun 22, 2021
@gkoller
AB#8701 Pin MyPy to version 0.812.
de12e44 
Version >= 0.900 has a number of issues that bite use:
- python/typeshed#5617
- it doesn't honor `# type: ignore[misc]` in those circumstances
gkoller added a commit to Amsterdam/dataservices-airflow that referenced this issue Jun 22, 2021
@gkoller
AB#8701 Pin MyPy to version 0.812.
9d7eb94 
Version >= 0.900 has a number of issues that bite use:
- python/typeshed#5617
- it doesn't honor `# type: ignore[misc]` in those circumstances
gkoller added a commit to Amsterdam/dataservices-airflow that referenced this issue Jun 22, 2021
@gkoller
AB#8701 Pin MyPy to version 0.812.
1e9674a 
Version >= 0.900 has a number of issues that bite use:
- python/typeshed#5617
- it doesn't honor `# type: ignore[misc]` in those circumstances
8000
gkoller added a commit to Amsterdam/dataservices-airflow that referenced this issue Jun 22, 2021
@gkoller
AB#8701 Pin MyPy to version 0.812.
bfbfc92 
Version >= 0.900 has a number of issues that bite use:
- python/typeshed#5617
- it doesn't honor `# type: ignore[misc]` in those circumstances
gkoller added a commit to Amsterdam/dataservices-airflow that referenced this issue Jun 22, 2021
@gkoller
AB#8701 Pin MyPy to version 0.812.
db8b086 
Version >= 0.900 has a number of issues that bite use:
- python/typeshed#5617
- it doesn't honor `# type: ignore[misc]` in those circumstances
gkoller added a commit to Amsterdam/dataservices-airflow that referenced this issue Jun 22, 2021
@gkoller
AB#8701 Pin MyPy to version 0.812.
7da7a13 
Version >= 0.900 has a number of issues that bite use:
- python/typeshed#5617
- it doesn't honor `# type: ignore[misc]` in those circumstances
gkoller added a commit to Amsterdam/dataservices-airflow that referenced this issue Jun 22, 2021
@gkoller
AB#8701 Pin MyPy to version 0.812.
ac4cbaa 
Version >= 0.900 has a number of issues that bite use:
- python/typeshed#5617
- it doesn't honor `# type: ignore[misc]` in those circumstances
gkoller added a commit to Amsterdam/dataservices-airflow that referenced this issue Jun 22, 2021
@gkoller
AB#8701 Pin MyPy to version 0.812.
f0be5d7 
Version >= 0.900 has a number of issues that bite use:
- python/typeshed#5617
- it doesn't honor `# type: ignore[misc]` in those circumstances
@JHeilCoveo JHeilCoveo mentioned this issue Jun 25, 2021
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Fix cachetools decorators coveord/typeshed
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@srittau @hauntsaninja @Akuli
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