python counter on a list code example

Example 1: How to see how many times somting is in a list python

vowels = ['a', 'e', 'i', 'o', 'i', 'u']
count = vowels.count('i')

Example 2: python count occurrences of an item in a list

>>> [1, 2, 3, 4, 1, 4, 1].count(1)
3