use settrace() intreface
diff --git a/Lib/bdb.py b/Lib/bdb.py
index dfc41d9..a5b580b 100644
--- a/Lib/bdb.py
+++ b/Lib/bdb.py
@@ -145,8 +145,7 @@
self.stopframe = self.botframe
self.returnframe = None
self.quitting = 1
- sys.trace = None
- del sys.trace
+ sys.settrace(None)
# Derived classes and clients can call the following functions
# to manipulate breakpoints. These functions return an
@@ -245,15 +244,14 @@
def runctx(self, cmd, globals, locals):
self.reset()
- sys.trace = self.trace_dispatch
+ sys.settrace(self.trace_dispatch)
try:
exec(cmd + '\n', globals, locals)
except BdbQuit:
pass
finally:
self.quitting = 1
- sys.trace = None
- del sys.trace
+ sys.settrace(None)
# XXX What to do if the command finishes normally?