正文
python list 中元素的统计与排序
提示：扫一扫查出行【扫一扫了解最新限行尾号】
复制提示
1. 用count和dict. dict的存储是散乱的, 不方面打印.
2. 用sorted. 注意, 得到的是一个元组list, 而不再是dict.
dict_x = {}
for item in list_all:
dict_x[item] = list_all.count(item)sorted_x = sorted(dict_x.items(), key=operator.itemgetter(1), reverse=True)for k, v in sorted_x:
print k, v
also can refer to:
http://www.saltycrane.com/blog/2007/09/how-to-sort-python-dictionary-by-keys/
http://stackoverflow.com/questions/613183/sort-a-python-dictionary-by-value
