Python and JSON - TypeError list indices must be integers not str

Question

I am learning to use Python and APIs  specifically  this World Cup API  http   www kimonolabs com worldcup explorer   The JSON data looks like this              firstName    Nicolas Alexis Julio        lastName    N Koulou N Doubena        nickname    N  N Koulou        assists   0       clubId    5AF524A1-830C-4D75-8C54-2D0BA1F9BE33        teamId    DF25ABB8-37EB-4C2A-8B6C-BDA53BF5A74D        id    D9AD1E6D-4253-4B88-BB78-0F43E02AF016        type    Player                firstName    Alexandre Dimitri        lastName    Song-Billong        nickname    A  Song        clubId    35BCEEAF-37D3-4685-83C4-DDCA504E0653        teamId    DF25ABB8-37EB-4C2A-8B6C-BDA53BF5A74D        id    A84540B7-37B6-416F-8C4D-8EAD55D113D9        type    Player              I am simply trying to print all of the firstNames in this API   Here s what I have   import urllib2 import json  url    http   worldcup kimonolabs com api players apikey xxx  json obj   urllib2 urlopen url  read readable json   json dumps json obj  playerstuff   readable json  firstName   for i in playerstuff      print i  firstName     But when I run it  I get the error     line 8  in    TypeError  list indices must be integers  not str   I have looked around for solutions  but seem to find questions to more  in depth  API questions and I don t really understand it all yet  so any help or explanation as to what I need to do would be amazing   Thank you

User · Answer

I solved changing  readable json  firstName     by  readable json 0   firstName

User · Answer

You can simplify your code down to   url    http   worldcup kimonolabs com api players apikey xxx  json obj   urllib2 urlopen url  read player json list   json loads json obj  for player in readable json list      print player  firstName     You were trying to access a list element using dictionary syntax  the equivalent of   foo    1  2  3  4  foo  1     It can be confusing when you have lists of dictionaries and keeping the nesting in order

User · Answer

First of all  you should be using json loads  not json dumps   loads converts JSON source text to a Python value  while dumps goes the other way   After you fix that  based on the JSON snippet at the top of your question  readable json will be a list  and so readable json  firstName   is meaningless   The correct way to get the  firstName  field of every element of a list is to eliminate the playerstuff   readable json  firstName   line and change for i in playerstuff  to for i in readable json

[python] Python and JSON - TypeError list indices must be integers not str

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