python统计序列中元素的方法

#!/usr/bin/python3
 
from random import randint
 
 
def count_seq(data):
   
  # 初始化统计结果字典,data中的key作为结果字典的key，0作为每个key的初始值
  result_c = dict.fromkeys(data, 0)
   
  # 循环data，对字典中中碰到的值进行 +1 ，循环完成后就是结果
  for x in data:
    result_c[x] += 1
  return result_c
 
if __name__ == '__main__':
  # 生成２０个随机数
  data = [randint(0, 20) for _ in range(20)]
  print(data)
   
  # 结果
  result_c = count_seq(data)
  for i in result_c:
    print(i, result_c[i])

#!/usr/bin/python3
 
from random import randint
from collections import Counter
 
 
def count_seq(data):
   
  # 创建Counter对象，并把打他传递进去
  median_c = Counter(data)
   
  # 返回统计最大的3个数
  return median_c.most_common(3)
 
if __name__ == '__main__':
  # 生成２０个随机数
  data = [randint(0, 20) for _ in range(20)]
  print(data)
   
  # 结果
  result_c = count_seq(data)
  print(result_c, dict(result_c))

import re
from collections import Counter
 
 
def count_words():
  # 读取文件
  with open('english_article', 'r', encoding='utf-8') as data:
    print()
    # 文件单词分割
    data_list = re.split('\W+', data.read())
  # 单词统计
  words = Counter(data_list)
  # 取单词统计最大的10个值
  return words.most_common(10)
 
if __name__ == '__main__':
  result = count_words()
  print(result)