追加值的次数的方法

第一种：s1 = 'python,java,php,go,c,python,java,php,go,c,python,java,php,go,c'
s=s1.split(',')
# dic={}
# for i in s:
#     if i not in dic:
#         dic[i]=1
#     else:
#         dic[i]=dic[i]+1
# # print(dic)
# # for k,v in dic.items():
#     print(k,':',v,'次')
第二种：import collections
s1 = 'python,java,php,go,c,python,java,php,go,c,python,java,php,go,c'
print(collections.Counter(s))
for word,count in collections.Counter(s).items():
    print(word,count,sep=' :  ')