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-rw-r--r--tests/cpydiff/types_dict_keys_set.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/tests/cpydiff/types_dict_keys_set.py b/tests/cpydiff/types_dict_keys_set.py
new file mode 100644
index 000000000..1a9af9d38
--- /dev/null
+++ b/tests/cpydiff/types_dict_keys_set.py
@@ -0,0 +1,7 @@
+"""
+categories: Types,dict
+description: Dictionary keys view does not behave as a set.
+cause: Not implemented.
+workaround: Explicitly convert keys to a set before using set operations.
+"""
+print({1:2, 3:4}.keys() & {1})