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bpo-13601: always use line-buffering for sys.stderr (GH-17646)

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Jendrik Seipp 2020-01-01 23:21:43 +01:00 • committed by Antoine Pitrou
parent 46abfc1416
commit 5b9077134c
5 changed files with 33 additions and 4 deletions
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Python/pylifecycle.c
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@ -1817,7 +1817,7 @@ create_stdio(const PyConfig *config, PyObject* io,
write_through = Py_True;
else
write_through = Py_False;
if (isatty && buffered_stdio)
if (buffered_stdio && (isatty || fd == fileno(stderr)))
line_buffering = Py_True;
else
line_buffering = Py_False;