首页 \ 问答 \ 如何在字典中添加词典(how can I add dictionaries in dictionary)

如何在字典中添加词典(how can I add dictionaries in dictionary)

我有4件物品。

item['bigCtgr'] = 'item'
item['smaCtgr'] = 'food'
item['ssCtgr'] = 'apple'
item['sCtgr'] = 'red'

我会多次添加到process_item。 所以我想制作这样的结构。 像类别的东西

{"item" : 
    {"food":
        {"apple":
            {"green":NULL},
            {"red":NULL}}, 
        {"banana":
            {"yellow":NULL},
            {"green":NULL}},
    }
    {"sweet":
        {"candy":
            {"yellow":NULL}}
    }
}

但我的代码不起作用,我不知道为什么。

class CategoryPipeline(object):
    global ctgr
    ctgr = {}

    def __init__(self):
        global file
        file = open("test.json","w")

    def process_item(self, item, spider):

        if item['bigCtgr'] not in ctgr.keys():
            ctgr[item['bigCtgr']] = {item['smaCtgr']: {item['ssCtgr'] : {item['sCtgr'] : 'NULL'}}}
        if item['smaCtgr'] not in ctgr[item['bigCtgr']].keys():
            ctgr[item['bigCtgr']][item['smaCtgr']] = {item['ssCtgr']: {item['sCtgr'] : 'NULL'}}
        elif item['ssCtgr'] not in ctgr[item['bigCtgr']][item['smaCtgr']].keys():
            ctgr[item['bigCtgr']][item['smaCtgr']][item['ssCtgr']] = {item['sCtgr'] : 'NULL'}
        else:
            ctgr[item['bigCtgr']][item['smaCtgr']][item['ssCtgr']][item['sCtgr']] = 'NULL'


    def __del__(self):
        b = json.dumps(ctgr, ensure_ascii=False).encode('utf-8')
        file.write(b)
        file.write('\n')
        file.close()

我该如何制作代码?


I have 4 items.

item['bigCtgr'] = 'item'
item['smaCtgr'] = 'food'
item['ssCtgr'] = 'apple'
item['sCtgr'] = 'red'

and i will add to process_item many times. so i want to make structure like this. Something like category

{"item" : 
    {"food":
        {"apple":
            {"green":NULL},
            {"red":NULL}}, 
        {"banana":
            {"yellow":NULL},
            {"green":NULL}},
    }
    {"sweet":
        {"candy":
            {"yellow":NULL}}
    }
}

but my code is not working and I don't know why.

class CategoryPipeline(object):
    global ctgr
    ctgr = {}

    def __init__(self):
        global file
        file = open("test.json","w")

    def process_item(self, item, spider):

        if item['bigCtgr'] not in ctgr.keys():
            ctgr[item['bigCtgr']] = {item['smaCtgr']: {item['ssCtgr'] : {item['sCtgr'] : 'NULL'}}}
        if item['smaCtgr'] not in ctgr[item['bigCtgr']].keys():
            ctgr[item['bigCtgr']][item['smaCtgr']] = {item['ssCtgr']: {item['sCtgr'] : 'NULL'}}
        elif item['ssCtgr'] not in ctgr[item['bigCtgr']][item['smaCtgr']].keys():
            ctgr[item['bigCtgr']][item['smaCtgr']][item['ssCtgr']] = {item['sCtgr'] : 'NULL'}
        else:
            ctgr[item['bigCtgr']][item['smaCtgr']][item['ssCtgr']][item['sCtgr']] = 'NULL'


    def __del__(self):
        b = json.dumps(ctgr, ensure_ascii=False).encode('utf-8')
        file.write(b)
        file.write('\n')
        file.close()

How can i make the code?


原文:
更新时间:2021-09-29 17:09

最满意答案

检查names.ToString()返回的内容,不应该对它运行正则表达式。

要获取与您的模式匹配的DefinedNames的数量,您可以使用:

names.Count(n => Regex.IsMatch(n.InnerText, @"(?<!\w)#\w+"));

Check what is returned by names.ToString(), you shouldn't run regex on it.

To get the number of DefinedNames matching your pattern, you can use:

names.Count(n => Regex.IsMatch(n.InnerText, @"(?<!\w)#\w+"));

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