从python中的字符串中获取所有url

Question

我有一个这样的字符串：

import React, { Component } from 'react';
import { Meteor } from 'meteor/meteor';
import { createContainer } from 'meteor/react-meteor-data';

export class PressureChart extends Component {
    componentDidMount() {
        this.startObserver()
    }

    startObserver() {
        this.chart = this.refs.chart.getChart();
        var self = this;

        this.observer = Pressure.find().observe({
            added: function(id, fields) {
                console.log(self.chart)
                self.chart.addPoints(fields.value)
            }
        })
    }

    render() { // ... }
}



export default createContainer(() => {
    const handle = Meteor.subscribe('pressure');
    const handleReady = handle.ready() 

    return {
        pressure: handleReady ? Pressure.find().fetch() : [],
    }
}, PressureChart);

我想写一个正则表达式从中获取[ { "profilechecksum":"58cd944da7b8e647abdcdb722d74fc7ai9060852", "userloginstatus":"Last Online today", "subscription_text":null, "subscription_icon":null, "age":"22 Years", "username":"ZZXS8433", "height":"5' 2\" ", "occupation":"Not working", "caste":"Namasudra\/Namosudra", "income":"No Income", "mtongue":"Bengali", "edu_level_new":"High School", "location":"Kolkata", "photo":{ "label":null, "url":"http:\/\/mediacdn.jeevansathi.com\/866\/17\/17337654-1375139585.jpeg", "action":null }, "size":null, "album_count":"1", "timetext":null, "seen":"Y", "religion":"Hindu", "gender":"F", "featured":null, "filter_score":"", "filter_reason":"", "highlighted":0, "verification_seal":null, "verification_status":null, "mstatus":"Never Married", "college":null, "pg_college":null, "company_name":null, "gunascore":null, "name_of_user":null, "profileid":"9060852", "buttonDetails":{ "buttons":[ { "iconid":"001", "label":"Send Interest", "action":"INITIATE", "value":null, "params":null }, { "iconid":"003", "label":"Shortlist", "action":"SHORTLIST", "value":null, "params":"&shortlist=false" }, { "iconid":"005", "label":"Photo", "action":"ALBUM", "value":"1", "params":null }, { "iconid":"007", "label":"Contact", "action":"CONTACTDETAIL", "value":null, "params":null } ], "button":null, "infomsgiconid":null, "infomsglabel":null, "infobtnlabel":null, "infobtnvalue":null, "infobtnaction":null }, "buttonDetailsJSMS":{ "buttons":[ { "action":"INITIATE", "label":"Send Interest", "iconid":null, "primary":"true", "secondary":null, "params":"&stype=A", "enable":true, "id":"INITIATE" }, { "iconid":null, "label":"View Contacts", "action":"CONTACT_DETAIL", "value":null, "params":null, "enable":true, "primary":"true", "secondary":null, "id":"CONTACT_DETAIL" }, { "action":"CHAT", "label":"Chat", "iconid":null, "primary":"true", "secondary":null, "enable":true, "id":"CHAT", "params":"ZZXS8433,9060852,http:\/\/mediacdn.jeevansathi.com\/866\/17\/17337654-1375139585.jpeg,N" }, { "action":"SHORTLIST", "iconid":"003", "label":"Shortlist", "params":"&shortlist=false", "primary":"true", "secondary":null, "enable":"true", "id":"SHORTLIST" } ], "button":null, "infomsgiconid":null, "infomsglabel":null, "infobtnlabel":null, "infobtnvalue":null, "infobtnaction":null } }, { "profilechecksum":"3c08e787ae61cbfada3232eb5393fa2fi8295748", "userloginstatus":"Last Online today", "subscription_text":null, "subscription_icon":null, "age":"22 Years", "username":"ZAUY2793", "height":"5' 2\" ", "occupation":"Student", "caste":"Jhijhotiya", "income":"No Income", "mtongue":"Hindi-MP", "edu_level_new":"B.Com", "location":"Indore", "photo":{ "label":null, "url":"http:\/\/mediacdn.jeevansathi.com\/713\/7\/14267803-1374952962.jpeg", "action":null }, "size":null, "album_count":"2", "timetext":null, "seen":"Y", "religion":"Hindu", "gender":"F", "featured":null, "filter_score":"", "filter_reason":"", "highlighted":0, "verification_seal":null, "verification_status":null, "mstatus":"Never Married", "college":null, "pg_college":null, "company_name":null, "gunascore":null, "name_of_user":null, "profileid":"8295748", "buttonDetails":{ "buttons":[ { "iconid":"001", "label":"Send Interest", "action":"INITIATE", "value":null, "params":null }, { "iconid":"003", "label":"Shortlist", "action":"SHORTLIST", "value":null, "params":"&shortlist=false" }, { "iconid":"005", "label":"Album", "action":"ALBUM", "value":"2", "params":null }, { "iconid":"007", "label":"Contact", "action":"CONTACTDETAIL", "value":null, "params":null } ], "button":null, "infomsgiconid":null, "infomsglabel":null, "infobtnlabel":null, "infobtnvalue":null, "infobtnaction":null }, "buttonDetailsJSMS":{ "buttons":[ { "action":"INITIATE", "label":"Send Interest", "iconid":null, "primary":"true", "secondary":null, "params":"&stype=A", "enable":true, "id":"INITIATE" }, { "iconid":null, "label":"View Contacts", "action":"CONTACT_DETAIL", "value":null, "params":null, "enable":true, "primary":"true", "secondary":null, "id":"CONTACT_DETAIL" }, { "action":"CHAT", "label":"Chat", "iconid":null, "primary":"true", "secondary":null, "enable":true, "id":"CHAT", "params":"ZAUY2793,8295748,http:\/\/mediacdn.jeevansathi.com\/713\/7\/14267803-1374952962.jpeg,N" }, { "action":"SHORTLIST", "iconid":"003", "label":"Shortlist", "params":"&shortlist=false", "primary":"true", "secondary":null, "enable":"true", "id":"SHORTLIST" } ], "button":null, "infomsgiconid":null, "infomsglabel":null, "infobtnlabel":null, "infobtnvalue":null, "infobtnaction":null } } ] （即，只有url部分）。

我试过了：

"url":"http:\/\/mediacdn.jeevansathi.com\/866\/17\/17337654-1375139585.jpeg"

但是它没有给我网址部分。

Answer 1

正则表达式似乎是错误的工具。这是一个JSON字符串;您应该解析它，然后搜索url属性以jpeg结尾的项目。

data = json.loads(my_string)
results = [item['photo']['url'] for item in results if item.get('photo', '{}').get('url', '').endswith('jpeg')]