how to get frequency of each elements in a python list

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Salvatore
21 Feb 2016
1# easiest way to count the frequency of all elements in a list
2lst = ['Sam', 'Sam', 'Tim', 'Tim', 'Tim', 'r', 'l']
3
4freq = {} # stores the frequency of elements
5counting = [freq.update({x: lst.count(x)}) for x in lst]
6
7# output of freq 
8{'Sam': 2, 'Tim': 3, 'r': 1, 'l': 1}
9
10#credit: buggyprogrammer.com
11#Note: if you print "counting" it will return a list full of None so ignore it. 
Nicolò
09 Sep 2016
1from collections import Counter
2
3def frequency_table(n):
4    table = Counter(n)
5    print('Number\tFrequency')
6    for number in table.most_common() :
7        print('{0}\t{1}'.format(number[0], number[1]))
8        
9# src : Doing Math With Python
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