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-rw-r--r--lib/sqlalchemy/sql/expression.py8
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py
index b2eaa4221..0bf9bea10 100644
--- a/lib/sqlalchemy/sql/expression.py
+++ b/lib/sqlalchemy/sql/expression.py
@@ -25,9 +25,7 @@ classes usually have few or no public methods and are less guaranteed
to stay the same in future releases.
"""
-import re
-import datetime
-import warnings
+import datetime, re
from itertools import chain
from sqlalchemy import util, exceptions
from sqlalchemy.sql import operators, visitors
@@ -1464,7 +1462,9 @@ class ColumnCollection(util.OrderedProperties):
existing = self[key]
if not existing.shares_lineage(value):
table = getattr(existing, 'table', None) and existing.table.description
- warnings.warn(RuntimeWarning("Column %r on table %r being replaced by another column with the same key. Consider use_labels for select() statements." % (key, table)))
+ util.warn(("Column %r on table %r being replaced by another "
+ "column with the same key. Consider use_labels "
+ "for select() statements.") % (key, table))
util.OrderedProperties.__setitem__(self, key, value)
def remove(self, column):