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-rw-r--r--babel/messages/checkers.py6
1 files changed, 3 insertions, 3 deletions
diff --git a/babel/messages/checkers.py b/babel/messages/checkers.py
index c4669c5..a1e6e8d 100644
--- a/babel/messages/checkers.py
+++ b/babel/messages/checkers.py
@@ -17,9 +17,9 @@ from babel._compat import string_types, izip
#: list of format chars that are compatible to each other
_string_format_compatibilities = [
- set(['i', 'd', 'u']),
- set(['x', 'X']),
- set(['f', 'F', 'g', 'G'])
+ {'i', 'd', 'u'},
+ {'x', 'X'},
+ {'f', 'F', 'g', 'G'}
]