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-rw-r--r--Python/sysmodule.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index d725c88..7089fc7 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -85,8 +85,12 @@ sysset(name, v)
char *name;
object *v;
{
- if (v == NULL)
- return dictremove(sysdict, name);
+ if (v == NULL) {
+ if (dictlookup(sysdict, name) == NULL)
+ return 0;
+ else
+ return dictremove(sysdict, name);
+ }
else
return dictinsert(sysdict, name, v);
}