KeyError: 'lattitude' - python-3.x

Question

I'm currently trying to use an API to get the data in Buffalo and return it in from a JSON URL and them place it in the format of: longitude, Latitude, and Viodesc.
However, I believe I am reaching difficulties when iterating due to some values not having latitude and longitude thus giving me a KeyError of 'latitude'.
I'm not sure if this is the fault in my code as well as how to go about changing it
import json
from urllib import request
def get_ticket_data(string):
answer = []
urlData = string
webURL = request.urlopen(urlData)
data = webURL.read()
ans = json.loads(data.decode())
for x in ans:
arr = []
arr.append(x["lattitude"])
arr.append(x["longtitude"])
arr.append(x["viodesc"])
return answer.append(ans)

Answer 1

You can catch the Exception 'KeyError' which is raised when the particular key is not found. Handle the exception so that even if the key is missing you can move on to the next record without stopping the code.
Code Snippet:
import json
from urllib import request
def get_ticket_data(string):
answer = []
urlData = string
webURL = request.urlopen(urlData)
data = webURL.read()
ans = json.loads(data.decode())
for x in ans:
try:
arr = []
arr.append(x["lattit**strong text**ude"])
arr.append(x["longtitude"])
arr.append(x["viodesc"])
except KeyError:
continue
return answer.append(ans)
Hope it helps!

Answer 2

Another different attempt would be to check before appending:
import json
from urllib import request
def get_ticket_data(string):
answer = []
urlData = string
webURL = request.urlopen(urlData)
data = webURL.read()
ans = json.loads(data.decode())
for x in ans:
arr = []
arr.append(x["lattit**strong text**ude"]) if x["lattit**strong text**ude""] else pass
arr.append(x["longtitude"]) if x["longitude"] else pass
arr.append(x["viodesc"]) if x["viodesc"] else pass
return answer.append(ans)
Using the inline-if will let you append if the value exists other wise it would not append.
It will all depend on how you will treat the information latter. Another approach would be to fill it with "" in case there is no latitude. For this approach you could do:
import json
from urllib import request
def get_ticket_data(string):
answer = []
urlData = string
webURL = request.urlopen(urlData)
data = webURL.read()
ans = json.loads(data.decode())
for x in ans:
arr = []
arr.append(x["lattit**strong text**ude"]) if x["lattit**strong text**ude""] else ""
arr.append(x["longtitude"]) if x["longitude"] else ""
arr.append(x["viodesc"]) if x["viodesc"] else ""
return answer.append(ans)