TypeError：列表索引必须是整数或切片，而不是str-从json获取

Question

I try to get all lattitudes and longtitudes from this json.

Code:

import urllib.parse
import requests

raw_json = 'http://live.ksmobile.net/live/getreplayvideos?userid='
print()

userid = 735890904669618176
#userid = input('UserID: ')

url = raw_json + urllib.parse.urlencode({'userid=': userid}) + '&page_size=1000'
print(url)

json_data = requests.get(url).json()
print()


for coordinates in json_data['data']['video_info']:
    print(coordinates['lat'], coordinates['lnt'])
    print()

Error:

/usr/bin/python3.6 /media/anon/3D0B8DD536C9574F/PythonProjects/getLocation/getCoordinates

http://live.ksmobile.net/live/getreplayvideos?userid=userid%3D=735890904669618176&page_size=1000

Traceback (most recent call last):
  File "/media/anon/3D0B8DD536C9574F/PythonProjects/getLocation/getCoordinates", line 17, in <module>
    for coordinates in json_data['data']['video_info']:
TypeError: list indices must be integers or slices, not str

Process finished with exit code 1

Where do I go wrong?

In advance, thanks for your help and time.

I just post some of the json to show what it looks like. The json looks like this:

{
  "status": "200",
  "msg": "",
  "data": {
    "time": "1499275646",
    "video_info": [
      {
        "vid": "14992026438883533757",
        "watchnumber": "38",
        "topicid": "0",
        "topic": "",
        "vtime": "1499202678",
        "title": "happy 4th of july",
        "userid": "735890904669618176",
        "online": "0",           
        "addr": "",
        "isaddr": "2",
        "lnt": "-80.1282576",
        "lat": "26.2810628",
        "area": "A_US",
        "countryCode": "US",
        "chatSystem": "1",
        },

Full json: https://pastebin.com/qJywTqa1

Answer 1

Your URL construction is incorrect. The URL you have built (as shown in the output of your script) is:

http://live.ksmobile.net/live/getreplayvideos?userid=userid%3D=735890904669618176&page_size=1000

Where you actually want this:

http://live.ksmobile.net/live/getreplayvideos?userid=735890904669618176&page_size=1000

So your were actually getting this JSON in your response:

{
  "status": "200",
  "msg": "",
  "data": []
}

Which is why you were seeing that error.

Here is the corrected script:

import urllib.parse
import requests

raw_json = 'http://live.ksmobile.net/live/getreplayvideos?'
print()

userid = 735890904669618176
#userid = input('UserID: ')

url = raw_json + urllib.parse.urlencode({'userid': userid}) + '&page_size=1000'
print(url)

json_data = requests.get(url).json()
print()


for coordinates in json_data['data']['video_info']:
    print(coordinates['lat'], coordinates['lnt'])
    print()

Answer 2

According to your posted json, you have problem in this statement-

print(coordinates['lat'], coordinates['lnt'])

Here coordinates is a list having only one item which is dictionary. So your statement should be-

print(coordinates[0]['lat'], coordinates[0]['lnt'])