# Python count occurrences of all items in list

If you only want a single item’s count in the list, then use the `count` method. Use the Python Counter method to count occurrences of all items in the list.

Use `Counter` if you are using Python 2.7 or 3.x and you want the number of occurrences for each element:

## Python counts occurrences of all items in the list

Simple example code.

``````from collections import Counter

l1 = [1, 2, 3, 4, 1, 4, 1]
res = l1.count(1)
print(res)

z = ['blue', 'red', 'blue', 'yellow', 'blue', 'red']
all = Counter(z)
print(all)
print(Counter(l1))
``````

Output:

Counting all items with count()

To count the occurrences of items in `l` one can simply use a list comprehension and the `count()` method

``````[[x,l.count(x)] for x in set(l)]
``````

(or similarly with a dictionary `dict((x,l.count(x)) for x in set(l))`)

Example:

``````>>> l = ["a","b","b"]
>>> [[x,l.count(x)] for x in set(l)]
[['a', 1], ['b', 2]]
>>> dict((x,l.count(x)) for x in set(l))
{'a': 1, 'b': 2}
``````

Counting all items with Counter()

Alternatively, there’s the faster `Counter` class from the `collections` library

``````Counter(l)
``````

Example:

``````>>> l = ["a","b","b"]
>>> from collections import Counter
>>> Counter(l)
Counter({'b': 2, 'a': 1})``````

Do comment if you have any doubts or suggestions on this Python list topic.

Note: IDE: PyCharm 2021.3.3 (Community Edition)

Windows 10

Python 3.10.1

All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions.