How to write multiple values ​​with one key in python dictionary?

#How to write multiple values ​​with one key in a python dictionary?

One-key multi-value writing method in python dictionary:

1. Loop to write dictionary key, value, and delete the specified key-value pair:

The original text 'jp_url.txt' elements in each line are separated by commas:

host_key,product_id,product_name,cont_start,cont_end
ah2.zhangyue.com,100002,掌阅,bookId=,&startChapterId
ih2.ireader.com,100002,掌阅,bid=,&
www.ireader.com,100002,掌阅,&bid=,&cid
m.zhangyue.com,100002,掌阅,readbook/,/
c13.shuqireader.com,100003,书旗,bookId=,&chapterId
t.shuqi.com,100003,书旗,bid/,/cid
想要得到：
{‘100002’：‘product_name’.......}

The code is as follows:

def makeDict():
    fileRead=open('jp_url.txt','rb')
    lines=fileRead.readlines()
    read_dict={}#定义字典
    for line in lines:
        line_list=line.split(',')#每行按逗号分隔成列表
        id=line_list[1]#取到id
        name=line_list[2]#取到name
        read_dict[id]=name#此处关键产生键值对，其中key是id
    read_dict.pop('product_id')#删除key为‘product_id’的键值对
    return read_dict
read_dict=makeDict()

2. Loop to write one-click to many values:

The format{key:[value1,value2,...]}

The text txt format is as follows:

• guaguashipinliaotianshi| .guagua.cn,

• guaguashipinliaotianshi|iguagua.net,

• guaguashipinliaotianshi|.17guagua.com,

• jiuxiumeinvzhibo|.69xiu.com,

• nbazhibo|.estream.cn,

• youbo|yb.sxsapp.com,

The names in the first column are repeated. If you want one name to correspond to multiple results, the code is as follows:

def makehostDict():
    host_dict={}
    f_allhost=open('xml_host.txt','rb')
    lines=f_allhost.readlines()
    for line in lines:
        line_list=line.split('|')
        name=line_list[0]
        host=line_list[1].strip('\n')
        if host is not '':
            if  host_dict.has_key(name):
                host_dict.get(name).append(host)#此处为关键向字典里已经有的key(name)值后继续添加value(host)
            else:
                host_dict.setdefault(name,[]).append(host)#创建{name，[host]}value为列表的格式的字典。
    return host_dict
host_dict=makehostDict()
print host_dict

Recommended tutorial: "python Video tutorial》

The above is the detailed content of How to write multiple values ​​with one key in python dictionary?. For more information, please follow other related articles on the PHP Chinese website!