Don't close sys.stdin with quit() if sys.stdin wraps fd 0. Otherwise it will raise a warning: Lib/io.py:1221: RuntimeWarning: Trying to close unclosable fd
diff --git a/Lib/site.py b/Lib/site.py
index 4d64d20..3ba4212 100644
--- a/Lib/site.py
+++ b/Lib/site.py
@@ -247,7 +247,12 @@
# Shells like IDLE catch the SystemExit, but listen when their
# stdin wrapper is closed.
try:
- sys.stdin.close()
+ fd = -1
+ if hasattr(sys.stdin, "fileno"):
+ fd = sys.stdin.fileno()
+ if fd != 0:
+ # Don't close stdin if it wraps fd 0
+ sys.stdin.close()
except:
pass
raise SystemExit(code)