From db97a1a06dbc170eb17315f95e2aef21afc27a78 Mon Sep 17 00:00:00 2001 From: Angelos Chalaris Date: Tue, 20 Aug 2019 13:13:51 +0300 Subject: [PATCH] Add filter_non_unique snippet --- snippets/filter_non_unique.md | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 snippets/filter_non_unique.md diff --git a/snippets/filter_non_unique.md b/snippets/filter_non_unique.md new file mode 100644 index 000000000..b9dd96923 --- /dev/null +++ b/snippets/filter_non_unique.md @@ -0,0 +1,17 @@ +--- +title: filter_non_unique +tags: list,beginner +--- + +Filters out the non-unique values in a list. + +Use list comprehension and `list.count()` to create a list containing only the unique values. + +```py +def filter_non_unique(lst): + return [item for item in lst if lst.count(item) == 1] +``` + +```py +filter_non_unique([1, 2, 2, 3, 4, 4, 5]) # [1, 3, 5] +```