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-rw-r--r--lib/sqlalchemy/ext/mutable.py1
1 files changed, 0 insertions, 1 deletions
diff --git a/lib/sqlalchemy/ext/mutable.py b/lib/sqlalchemy/ext/mutable.py
index 82410031d..4e574935d 100644
--- a/lib/sqlalchemy/ext/mutable.py
+++ b/lib/sqlalchemy/ext/mutable.py
@@ -49,7 +49,6 @@ tracks all parents which reference it. Below, we illustrate the a simple
version of the :class:`.MutableDict` dictionary object, which applies
the :class:`.Mutable` mixin to a plain Python dictionary::
- import collections
from sqlalchemy.ext.mutable import Mutable
class MutableDict(Mutable, dict):