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-rw-r--r--tests/basics/containment.py23
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/basics/containment.py b/tests/basics/containment.py
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index 0000000000..84d40b4e8f
--- /dev/null
+++ b/tests/basics/containment.py
@@ -0,0 +1,23 @@
+for i in 1, 2:
+ for o in {1:2}, {1}, {1:2}.keys():
+ print("{} in {}: {}".format(i, o, i in o))
+ print("{} not in {}: {}".format(i, o, i not in o))
+
+haystack = "supercalifragilistc"
+for needle in (haystack[i:] for i in range(len(haystack))):
+ print(needle, "in", haystack, "::", needle in haystack)
+ print(needle, "not in", haystack, "::", needle not in haystack)
+ print(haystack, "in", needle, "::", haystack in needle)
+ print(haystack, "not in", needle, "::", haystack not in needle)
+for needle in (haystack[:i+1] for i in range(len(haystack))):
+ print(needle, "in", haystack, "::", needle in haystack)
+ print(needle, "not in", haystack, "::", needle not in haystack)
+ print(haystack, "in", needle, "::", haystack in needle)
+ print(haystack, "not in", needle, "::", haystack not in needle)
+
+# until here, the tests would work without the 'second attempt' iteration thing.
+
+for i in 1, 2:
+ for o in [], [1], [1, 2]:
+ print("{} in {}: {}".format(i, o, i in o))
+ print("{} not in {}: {}".format(i, o, i not in o))