How to find the serial number of times it appears most of the elements?
collections.Counter class is specifically designed for this type of problem, and even a direct answer most_common
Suppose a list of numbers want to find out which numbers appear high frequency
words = [1,1,1,1,2,3,3,3,4,4,5,6,7,8]
from collections import Counter
word_counts = Counter(words)
top_three = word_counts.most_common(3)
print(top_three)
### 输出
[(1, 4), (3, 3), (4, 2)]
Target sequences, consisting of the hash element as input, an arbitrary object can accept Counter, on the underlying implementation, a Counter object is a dictionary, the elements map to the number of times it appears. such as:
word_counts[1]
word_counts[2]
### 输出
4
1
