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-rw-r--r--Mac/Tools/IDE/PythonIDEMain.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Mac/Tools/IDE/PythonIDEMain.py b/Mac/Tools/IDE/PythonIDEMain.py
index 51072e1..1b2b3b7 100644
--- a/Mac/Tools/IDE/PythonIDEMain.py
+++ b/Mac/Tools/IDE/PythonIDEMain.py
@@ -46,7 +46,7 @@ class PythonIDE(Wapplication.Application):
# With -D option (OSX command line only) keep stderr, for debugging the IDE
# itself.
debug_stderr = None
- if sys.argv[1] == '-D':
+ if len(sys.argv) >= 2 and sys.argv[1] == '-D':
debug_stderr = sys.stderr
del sys.argv[1]
PyConsole.installoutput()