用python请求刮json

Posted 2021-04-20

这不是我第一次抓取数据，但确实感觉就像这样。

import csv
import requests
import os

outfile = open("Labs_StartingGoalies.csv","a",newline='')
writer = csv.writer(outfile)
header=[
    "Home_Tm"]

writer.writerow(header)

req = requests.get('https://www.fantasylabs.com/api/lines/4/12-20-2017/startinggoalies') 
data = req.json()['GoalieMatchups']

for i, teams in enumerate(data):
    for i, team in enumerate(teams['Properties']):
        print (team)

输出：

EventId
EventDate
EventDateTime
TimeOfDay
Stadium
HomeTeam
HomeEventTeamId
HomeGoalie
HomeTwitterName
HomePrimarySourceKey
HomeGoalieId
HomeGoalieSalary_DK
HomeGoalieSalary_FD
HomeGoalieStatus
HomeGoalieText
HomeModifiedDate
HomeSourceText
HomeSourceURL
HomeMoneyLine
HomeMoneylineChange
HomeVegasPoints
VisitorTeam
VisitorEventTeamId
VisitorGoalie
VisitorTwitterName
VisitorPrimarySourceKey
VisitorGoalieId
VisitorGoalieSalary_DK
VisitorGoalieSalary_FD
VisitorGoalieStatus
VisitorGoalieText
VisitorModifiedDate
VisitorSourceText
VisitorSourceURL
VisitorMoneyLine
VisitorMoneylineChange
VisitorVegasPoints

下一个代码：

import csv
import requests
import os

outfile = open("Labs_StartingGoalies.csv","a",newline='')
writer = csv.writer(outfile)
header=[
    "Home_Tm"]

writer.writerow(header)

req = requests.get('https://www.fantasylabs.com/api/lines/4/12-20-2017/startinggoalies') 
data = req.json()['GoalieMatchups']

for i, teams in enumerate(data):
    for i, team in enumerate(teams['Properties']):
        HomeTeam = team['HomeTeam']
        print (HomeTeam)

错误：File "C:/Python36/Projects/NHL/Labs_Teams.py", line 17, in <module> HomeTeam = team['HomeTeam'] TypeError: string indices must be integers

这个Json有点难以阅读。通常我会使用Mozilla，但它不会以正常方式显示。我想开始从第一个output的列表中提取数据，但所有不同的尝试都很短。谢谢参观！

答案

for循环应修改如下，

for i, teams in enumerate(data):
    HomeTeam = teams['Properties']['HomeTeam']
    print (HomeTeam)

这将输出

Columbus Blue Jackets
Philadelphia Flyers
Calgary Flames

你不需要内循环，因为teams['Properties']是一个字典，而不是一个列表。

编辑：此外，由于您没有使用计数器，因此您不需要枚举已经是列表的数据

for teams in data:
    HomeTeam = teams['Properties']['HomeTeam']
    print (HomeTeam)

另一答案

你有使用枚举的原因吗？你可能想做这样的事情：

for teams in data:
    HomeTeam = teams['Properties']['HomeTeam']
    print (HomeTeam)

结果：

Columbus Blue Jackets
Philadelphia Flyers
Calgary Flames