python - 创建一个从网站抓取文件的python程序

Question

这是我目前的情况

import urllib
Champions=["Aatrox","Ahri","Akali","Alistar","Amumu","Anivia","Annie","Ashe","Azir","Blitzcrank","Brand","Braum","Caitlyn","Cassiopeia","ChoGath","Corki","Darius","Diana","DrMundo","Draven","Elise","Evelynn","Ezreal","Fiddlesticks","Fiora","Fizz","Galio","Gangplank","Garen","Gnar","Gragas","Graves","Hecarim","Heimerdinger","Irelia","Janna","JarvanIV","Jax","Jayce","Jinx","Kalista","Karma","Karthus","Kassadin","Katarina","Kayle","Kennen","KhaZix","KogMaw","LeBlanc","LeeSin","Leona","Lissandra","Lucian","Lulu","Lux","Malphite","Malzahar","Maokai","MasterYi","MissFortune","Mordekaiser","Morgana","Nami","Nasus","Nautilus","Nidalee","Nocturne","Nunu","Olaf","Orianna","Pantheon","Poppy","Quinn","Rammus","RekSai","Renekton","Rengar","Riven","Rumble","Ryze","Sejuani","Shaco","Shen","Shyvana","Singed","Sion","Sivir","Skarner","Sona","Soraka","Swain","Syndra","Talon","Taric","Teemo","Thresh","Tristana","Trundle","Tryndamere","TwistedFate","Twitch","Udyr","Urgot","Varus","Vayne","Veigar","VelKoz","Vi","Viktor","Vladimir","Volibear","Warwick","Wukong","Xerath","XinZhao","Yasuo","Yorick","Zac","Zed","Ziggs","Zilean","Zyra"]
currentCount=0
while currentCount < len(Champions):
    urllib.urlretrieve("http://www.lolflavor.com/champions/"+Champions[currentCount]+ "/Recommended/"+Champions[currentCount]+"_lane_scrape.json","C:\Users\Jay\Desktop\LolFlavor\ " +Champions[currentCount]+ "\ "+Champions[currentCount]+ "_lane_scrape.json")
    currentCount+=1

该程序的目的是使用列表和 currentCount 获得冠军，然后转到网站，例如“Aatrox”http://www.lolflavor.com/champions/Aatrox/Recommended/Aatrox_lane_scrape.json。 ，然后它会下载文件并将其存储在文件夹 LolFlavor/Aatrox/Aatrox_lane_scrape.json 中。

Aatrox 的位置因冠军而异。谁能帮我让它工作？

编辑:当前代码有值错误:

import json
import os
import requests
Champions=["Aatrox","Ahri","Akali","Alistar","Amumu","Anivia","Annie","Ashe","Azir","Blitzcrank","Brand","Braum","Caitlyn","Cassiopeia","ChoGath","Corki","Darius","Diana","DrMundo","Draven","Elise","Evelynn","Ezreal","Fiddlesticks","Fiora","Fizz","Galio","Gangplank","Garen","Gnar","Gragas","Graves","Hecarim","Heimerdinger","Irelia","Janna","JarvanIV","Jax","Jayce","Jinx","Kalista","Karma","Karthus","Kassadin","Katarina","Kayle","Kennen","KhaZix","KogMaw","LeBlanc","LeeSin","Leona","Lissandra","Lucian","Lulu","Lux","Malphite","Malzahar","Maokai","MasterYi","MissFortune","Mordekaiser","Morgana","Nami","Nasus","Nautilus","Nidalee","Nocturne","Nunu","Olaf","Orianna","Pantheon","Poppy","Quinn","Rammus","RekSai","Renekton","Rengar","Riven","Rumble","Ryze","Sejuani","Shaco","Shen","Shyvana","Singed","Sion","Sivir","Skarner","Sona","Soraka","Swain","Syndra","Talon","Taric","Teemo","Thresh","Tristana","Trundle","Tryndamere","TwistedFate","Twitch","Udyr","Urgot","Varus","Vayne","Veigar","VelKoz","Vi","Viktor","Vladimir","Volibear","Warwick","Wukong","Xerath","XinZhao","Yasuo","Yorick","Zac","Zed","Ziggs","Zilean","Zyra"]
for champ in Champions:
    os.makedirs("C:\\Users\\Jay\\Desktop\\LolFlavor\\{}\\Recommended".format(champ), exist_ok=True)
    with open(r"C:\Users\Jay\Desktop\LolFlavor\{}\Recommended\{}_lane_scrape.json".format(champ,champ),"w") as f:
        r = requests.get("http://www.lolflavor.com/champions/{}/Recommended/{}_lane_scrape.json".format(champ,champ))
        json.dump(r.json(),f)
    with open(r"C:\Users\Jay\Desktop\LolFlavor\{}\Recommended\{}_jungle_scrape.json".format(champ,champ),"w") as f:
        r = requests.get("http://www.lolflavor.com/champions/{}/Recommended/{}_jungle_scrape.json".format(champ,champ))
        json.dump(r.json(),f)
    with open(r"C:\Users\Jay\Desktop\LolFlavor\{}\Recommended\{}_support_scrape.json".format(champ,champ),"w") as f:
        r = requests.get("http://www.lolflavor.com/champions/{}/Recommended/{}_support_scrape.json".format(champ,champ))
        json.dump(r.json(),f)
    with open(r"C:\Users\Jay\Desktop\LolFlavor\{}\Recommended\{}_aram_scrape.json".format(champ,champ),"w") as f:
        r = requests.get("http://www.lolflavor.com/champions/{}/Recommended/{}_aram_scrape.json".format(champ,champ))
        json.dump(r.json(),f)

Answer 1

import  requests

Champions=["Aatrox","Ahri","Akali","Alistar","Amumu","Anivia","Annie","Ashe","Azir","Blitzcrank","Brand","Braum","Caitlyn","Cassiopeia","ChoGath","Corki","Darius","Diana","DrMundo","Draven","Elise","Evelynn","Ezreal","Fiddlesticks","Fiora","Fizz","Galio","Gangplank","Garen","Gnar","Gragas","Graves","Hecarim","Heimerdinger","Irelia","Janna","JarvanIV","Jax","Jayce","Jinx","Kalista","Karma","Karthus","Kassadin","Katarina","Kayle","Kennen","KhaZix","KogMaw","LeBlanc","LeeSin","Leona","Lissandra","Lucian","Lulu","Lux","Malphite","Malzahar","Maokai","MasterYi","MissFortune","Mordekaiser","Morgana","Nami","Nasus","Nautilus","Nidalee","Nocturne","Nunu","Olaf","Orianna","Pantheon","Poppy","Quinn","Rammus","RekSai","Renekton","Rengar","Riven","Rumble","Ryze","Sejuani","Shaco","Shen","Shyvana","Singed","Sion","Sivir","Skarner","Sona","Soraka","Swain","Syndra","Talon","Taric","Teemo","Thresh","Tristana","Trundle","Tryndamere","TwistedFate","Twitch","Udyr","Urgot","Varus","Vayne","Veigar","VelKoz","Vi","Viktor","Vladimir","Volibear","Warwick","Wukong","Xerath","XinZhao","Yasuo","Yorick","Zac","Zed","Ziggs","Zilean","Zyra"]

for champ in Champions:
    r = requests.get("http://www.lolflavor.com/champions/{}/Recommended/{}_lane_scrape.json".format(champ,champ))
    print(r.json())

如果你想把每一个都保存到一个文件中。 dump json.

import json
import simplejson 

for champ in Champions:
    with open(r"C:\Users\Jay\Desktop\LolFlavor\{}_lane_scrape.json".format(champ),"w") as f:
        try:
            r = requests.get("http://www.lolflavor.com/champions/{}/Recommended/{}_lane_scrape.json".format(champ, champ))
            json.dump(r.json(),f)
        except simplejson.scanner.JSONDecodeError as e:
            print(e.r.url)

错误来自404 - File or directory not found由于你们中的一个调用失败，因此没有有效的 json 可以解码。违规网址是:

u'http://www.lolflavor.com/champions/Wukong/Recommended/Wukong_lane_scrape.json'

如果您在浏览器中尝试，也会出现 404 错误。这是因为没有用户 Wukong打开http://www.lolflavor.com/champions/Wukong/可以确认在你的浏览器中

不需要使用 while 循环来索引列表。只需直接遍历列表项并使用 str.format 将变量传递到 url 中。还要确保使用原始字符串 r使用 \'s 时的文件路径因为它们在 python 中具有特殊含义，所以它们用于转义字符，所以 \n或 \r等等 .. 在你的路径中会导致问题。您也可以使用 /或使用 \\ 转义.