1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/pty.py b/Lib/pty.py
index fb7edc0..c9b8f0a 100644
--- a/Lib/pty.py
+++ b/Lib/pty.py
@@ -8,6 +8,17 @@
 
 from select import select
 import os
+
+# Absurd:  import termios and then delete it.  This is to force an attempt
+# to import pty to raise an ImportError on platforms that lack termios.
+# Without this explicit import of termios here, some other module may
+# import tty first, which in turn imports termios and dies with an
+# ImportError then.  But since tty *does* exist across platforms, that
+# leaves a damaged module object for tty in sys.modules, and the import
+# of tty here then appears to work despite that the tty imported is junk.
+import termios 
+del termios
+
 import tty
 
 __all__ = ["openpty","fork","spawn"]