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-rw-r--r--pym/portage/cache/mappings.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/pym/portage/cache/mappings.py b/pym/portage/cache/mappings.py
index 77923b462..066927ac1 100644
--- a/pym/portage/cache/mappings.py
+++ b/pym/portage/cache/mappings.py
@@ -148,6 +148,8 @@ class UserDict(MutableMapping):
def __init__(self, *args, **kwargs):
+ self.data = {}
+
if len(args) > 1:
raise TypeError(
"expected at most 1 positional argument, got " + \