Expose original file descriptor in CliRunner#3244
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kdeldycke wants to merge 1 commit intopallets:stablefrom
Open
Expose original file descriptor in CliRunner#3244kdeldycke wants to merge 1 commit intopallets:stablefrom
CliRunner#3244kdeldycke wants to merge 1 commit intopallets:stablefrom
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The fix in this PR has been tested and validated by the original reporter @ThomasLoke at #2865 (comment) . So I guess this one is ready to be reviewed and merged to |
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In #2865, a user realized that using standard library's
faulthandleris crashing inCliRunner. That's because inCliRunner's isolation,sys.stderris a_NamedTextIOWrapperaround aBytesIOand as such as nofileno().This PR gives
_NamedTextIOWrappera realfileno()so it can play nice with C-level consumers that need the original file descriptor, likefaulthandler,subprocess, C extensions, etc.Solution is inspired by pytest own's
capsysandcapfdmodes.This is an adjacent issue of #3139 and #3235, and fix #2865.