【问题标题】:JSON from (RIOT) API Formatted Incorrectly来自 (RIOT) API 的 JSON 格式不正确
【发布时间】:2020-08-25 17:28:30
【问题描述】:

我正在从 API 将 JSON 数据导入 Python 并遇到以下解码错误:

JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 2 (char 1)

查看在线示例可以立即清楚我的 JSON 数据有 ',而其他人有 "

理想情况下,我想知道为什么会以这种方式下载它。这似乎很可能是我的错误,而不是他们的错误。

我认为更正 JSON 格式应该很容易,但我在这里也失败了。请参阅下面的代码,了解我如何获取 JSON 数据以及我尝试修复它的方法。

#----------------------------------------
#---Read this only if you want to download 
#---the data yourself. 
#----------------------------------------

#Built from 'Towards Data Science' guide
#https://towardsdatascience.com/how-to-use-riot-api-with-python-b93be82dbbd6

#Must first have installed riotwatcher

#Info in my example is made up, I can't supply a real API code or
#I get in trouble. Sorry about this. You could obtain one from their website
#but this would be a lot of faff for what is probably a simple StackOverflow
#question

#If you were to get/have a key you could use the following information:
#<EUW> for region
#<Agurin> for name

#----------------------------------------
#---Code
#----------------------------------------


#--->Set Variables


#Get installed riotwatcher module for
#Python
import riotwatcher

#Import riotwatcher tools.
from riotwatcher import LolWatcher, ApiError

#Import JSON (to read the JSON API file)
import json

# Global variables
# Get new API from
# https://developer.riotgames.com/
api_key = 'RGAPI-XXXXXXX-XXX-XXXX-XXXX-XXXX'
watcher = LolWatcher(api_key)
my_region = 'MiddleEarth'

#need to give path to where records
#are to be stored
records_dir = "/home/solebaysharp/Projects/Riot API/Records"


#--->Obtain initial data, setup new varaibles

#Use 'watcher' to get basic stats and setup my account as a variable (me)
me = watcher.summoner.by_name(my_region, "SolebaySharp")

# Setup retrieval of recent match info
my_matches = watcher.match.matchlist_by_account(my_region, me["accountId"])
print(my_matches)

#--->Download the recent match data

#Define where the JSON data is going to go
recent_matches_index_json = (records_dir + "/recent_matches_index.json")

#get that JSON data
print ("Downloading recent match history data")
file_handle = open(recent_matches_index_json,"w+")
file_handle.write(str(my_matches))
file_handle.close()

#convert it to python
file_handle = open(recent_matches_index_json,)
recent_matches_index = json.load(file_handle)

除了这个给予者以下错误...

JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 2 (char 1)

所以我尝试纠正这个问题:

file_handle = open(recent_matches_index_json)

json_sanitised = json.loads(file_handle.replace("'", '"'))

这会返回...

AttributeError: '_io.TextIOWrapper' object has no attribute 'replace'

为了完整起见,下面是 JSON 的样例。我添加了段落以增强可读性。它不是这样来的。

{'matches': [
  {'platformId': 'NA1',
   'gameId': 5687555181,
   'champion': 235,
   'queue': 400,
   'season': 13,
   'timestamp': 1598243995076,
   'role': 'DUO_SUPPORT',
   'lane': 'BOTTOM'
   },
   {'platformId': 'NA1',
   'gameId': 4965733458,
   'champion': 235,
   'queue': 400,
   'season': 13,
   'timestamp': 1598240780841,
   'role': 'DUO_SUPPORT',
   'lane': 'BOTTOM'
   },
   {'platformId': 'NA1',
   'gameId': 4583215645,
   'champion': 111,
   'queue': 400,
   'season': 13,
   'timestamp': 1598236666162,
   'role': 'DUO_SUPPORT',
   'lane': 'BOTTOM'
   }],
'startIndex': 0,
'endIndex': 100,
'totalGames': 186}

【问题讨论】:

    标签: python json api riot-games-api


    【解决方案1】:

    这是因为 Python 将 JSON 转换为字符串 (str)。

    file_handle.write(str(my_matches))
    

    因为它看不出'" 之间的区别,所以它只是使用默认的'

    我们可以使用JSON.dumps 阻止这种情况发生。这也部分(当然不是完全)回答了问题的第二部分,因为我们使用的是格式正确的 JSON 命令。

    上述行只需替换为:

    file_handle.write(json.dumps(my_matches))
    

    这将保留 JSON 格式。

    【讨论】:

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