Reorganize snippets

python/s/tail.md

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+---
+title: List tail
+type: snippet
+language: python
+tags: [list]
+cover: meteora
+dateModified: 2020-11-02T19:28:35+02:00
+---
+
+Returns all elements in a list except for the first one.
+
+- Use slice notation to return the last element if the list's length is more than `1`.
+- Otherwise, return the whole list.
+
+```py
+def tail(lst):
+  return lst[1:] if len(lst) > 1 else lst
+```
+
+```py
+tail([1, 2, 3]) # [2, 3]
+tail([1]) # [1]
+```