[New-bugs-announce] [issue41907] Regression in IntFlag behaviour in f-string
Roger Taylor
report at bugs.python.org
Thu Oct 1 22:38:10 EDT 2020
New submission from Roger Taylor <roger.taylor.email at gmail.com>:
An IntFlag member before 3.8.6 was converted to an integer in an f-string. After 3.8.6, the textual IntFlag class and member name are placed in the interpolated f-string instead of the integer.
3.8.3: f"... {X.F} ..." where X.F = 1 << 4 will give "... 16 ..."
3.8.5: Same
3.8.6: f"... {X.F} ..." where X.F = 1 << 4 will give "... X.F ..."
I have reproduced this on Linux using the version compiled and installed by pyenv, and on Windows using the 32-bit versions from the downloadable standalone installer.
Now I have to locate and go through all my SQL statements and verify that they explicitly convert IntFlag values to integer to avoid the errors introduced by this regression.
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components: Interpreter Core
messages: 377793
nosy: rt121212121
priority: normal
severity: normal
status: open
title: Regression in IntFlag behaviour in f-string
type: behavior
versions: Python 3.8
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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41907>
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