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Fix narrowing from object to Optional - #4118
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JukkaL
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Oct 26, 2017
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LGTM. Thanks for the fix!
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Oct 31, 2017
Previously: ``` x: object y: Optional[int] x = y reveal_type(x) # builtins.int ``` This was unexpected and may be unsafe. Fix this by considering object as overlapping with everything (including None).
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Currently:
this is unexpected and may be unsafe. This PR fixes this by considering
objectas overlapping with everything (includingNone).