Collections counter

# importing the collections module
import collections
# intializing the arr
arr = [1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3]
# getting the elements frequencies using Counter class
elements_count = collections.Counter(arr)
# printing the element and the frequency
for key, value in elements_count.items():
   print(f"{key}: {value}")

Source: tutorialspoint.com

Python counter

sum(c.values())                 # total of all counts
c.clear()                       # reset all counts
list(c)                         # list unique elements
set(c)                          # convert to a set
dict(c)                         # convert to a regular dictionary
c.items()                       # convert to a list of (elem, cnt) pairs
Counter(dict(list_of_pairs))    # convert from a list of (elem, cnt) pairs
c.most_common()[:-n-1:-1]       # n least common elements
c += Counter()                  # remove zero and negative counts

Source: docs.python.org

Similar codes

0 vote171 views1 answer
Python round 2.5
Python
0 vote179 views1 answer
Python count lines in string
Python
23 votes155 views3 answers
Django drf
Python
1 vote116 views1 answer
Procfile for flask app
Python
25 votes154 views2 answers
How to set variable to null in python
Python
0 vote145 views1 answer
Check if numpy array contains only duplicates
Python
2 votes156 views2 answers
Python socket get client ip address
Python
15 votes143 views2 answers
How to add beautifulsoup to python
Python
1 vote149 views1 answer
Python zip listas diferente tamaño
Python
2 votes203 views1 answer
How to convert gb to mb in python
Python