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

101 votes206 views6 answers
Remove last character from string python
Python
3 votes177 views1 answer
Remove after and before space python
Python
99 votes185 views6 answers
Python delete file
Python
0 vote213 views1 answer
Promote a row in panda dataframe to header
Python
0 vote201 views1 answer
Shotgun filter any
Python
0 vote195 views1 answer
Get key of min value
Python
1 vote247 views4 answers
Python ip camera
Python
0 vote174 views1 answer
Binary string to hex python
Python
11 votes229 views6 answers
Enumerate in python
Python
0 vote222 views1 answer
Python xml to csv
Python