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snippets/python/s/is-contained-in.md

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+---
+title: List is contained in other list
+type: snippet
+language: python
+tags: [list]
+cover: tropical-bike
+dateModified: 2021-01-07T23:30:28+02:00
+---
+
+Checks if the elements of the first list are contained in the second one regardless of order.
+
+- Use `count()` to check if any value in `a` has more occurrences than it has in `b`.
+- Return `False` if any such value is found, `True` otherwise.
+
+```py
+def is_contained_in(a, b):
+  for v in set(a):
+    if a.count(v) > b.count(v):
+      return False
+  return True
+```
+
+```py
+is_contained_in([1, 4], [2, 4, 1]) # True
+```