I have a JSON object as below that I load from a file. I want to parse the JSON object for all the CityName values.
{
"CityList": [
{
"Continent": "USA",
"CityName": "Chicago"
},
{
"Continent": "Russia",
"CityName": "Moscow"
},
{
"Continent": "Asia",
"CityName": "Beijing"
},
{
"Continent": "Australia",
"CityName": "Sydney"
}
]
}
I am using Python script to extract the CityName element from the JSON such through a FOR loop. I want to use the "name" variable downstream for some other reasons.
name=Chicago
name=Moscow
name=Beijing
name=Sydney
I have tried the following so far.
with open('city_names.json','r') as read_file:
json_data = read_file.read()
data = json.loads(json_data)
for k,v in data.items():
name=v['CityName']
print(name)
After running the above unsuccessfully for quite some time, I keep getting this error "TypeError: list indices must be integers, not
str". I know what the issue is but unfortunately I don't know the
fix. Help is really appreciated.
to get CityName, you can loop through data['CityList'] since it is a list:
for v in data['CityList']:
name=v['CityName']
print(name)
Your data is a list of dicts under the CityList key, so you should iterate over the sub-dicts of the list first and then output the value of the CityName key:
for d in data['CityList']:
print(d['CityName'])
Related
I want to print the ip addresses from jobs.json but I am getting the error 'string indices must be integers'
Here is my python code:
import json
f = open('jobs.json')
data = json.load(f)
f.close()
for item in data["Jobs"]:
print(item["ip"])
And here is the Jobs.json file:
{
"Jobs": {
"Carpenter": {
"ip": "123.1432.515",
"address": ""
},
"Electrician": {
"ip": "643.452.234",
"address": "mini-iad.com"
},
"Plumber": {
"ip": "151.101.193",
"Address": "15501 Birch St"
},
"Mechanic": {
"ip": "218.193.942",
"Address": "Yellow Brick Road"
}
}
data["Company"] is a dictionary, so you're iterating over the keys (which are strings). Use data["Company"].values():
import json
with open("company.json", "r") as f_in:
data = json.load(f_in)
for item in data["Company"].values():
print(item["ip"])
Prints:
142.250.115.139
151.101.193
data["Company"] returns a dictionary. When iterating over that, you will get string keys for item, since that's what you get by default when iterating over a dictionary. Then you try to do item["ip"], where item is "Google" for example, which causes your error.
You want to iterate the values of the dictionary instead:
for item in data["Company"].values():
print(item["ip"])
I am using a python and getting the data from an API the data formatted as listed in the example I have a problem getting out Cust_id and name put of the API
Below is one of the things I tried and one of the things answered by SimonR. I am sure I am doing something really dumb right now but I get the error
typeError: the JSON object must be str, bytes or bytearray, not dict. Thank you everyone in advance for your answers
import json
a = {
"count": 5,
"Customers": {
"32759": {
"cust_id": "1234",
"name": "Mickey Mouse"
},
"11053": {
"cust_id": "1235",
"name": "Mini Mouse"
},
"21483": {
"cust_id": "1236",
"name": "Goofy"
},
"12441": {
"cust_id": "1237",
"name": "Pluto"
},
"16640": {
"cust_id": "1238",
"name": "Donald Duck"
}
}
}
d = json.loads(a)
customers = {v["cust_id"]: v["name"] for v in d["Customers"].values()}
Is this what you're trying to do ?
import json
d = json.loads(a)
customers = {v["cust_id"]: v["name"] for v in d["Customers"].values()}
outputs :
{'1234': 'Mickey Mouse',
'1235': 'Mini Mouse',
'1236': 'Goofy',
'1237': 'Pluto',
'1238': 'Donald Duck'}
Well if I understood correctly you can do this:
# d is the API response in your post
# This will give you the list of customers
customers = d['Customers']
Then you can iterate over the customers dictionary and save them to any data structure you want:
# This will print out the name and cust_id
for k, v in customers.items():
print(v['cust_id'], v['name'])
Hope it helps!
import json
# convert json to python dict
response = json.loads(json_string)
# loop through all customers
for key, customer in response['Customers'].items():
# get customer id
customer['cust_id']
# get customer name
custoemr['name']
I receive a fairly uncomfortable JSON to work with, which looks as follows:
[
{
"attributes": [
{
"type": "COMMAND",
"name": "COMMAND",
"value": [
"buttonState"
]
},
{
"type": "std_msgs.msg.Bool",
"name": "buttonState",
"value": {
"data": false
}
}
],
"type": "sensor",
"id": "s_2"
}]
And I would like to compare a piece of data (more precisely - value of Button state) but I seem to fail. Tried following:
import requests
import json
yo = 1
switchPost = "http://192.168.0.104:7896/iot/d?k=123456789&i=san_1_switch&d=sw|{}"
robGet = "http://192.168.0.109:10100/robot/sen_2"
r = requests.get(robGet, headers={"content-type":"application/json"})
resp = json.loads(r.text)
for attrs in (resp['attributes']['value']):
if attrs['data'] == false:
yo = 100
break
g = requests.post(switchPost.format(yo), headers={"content-type":"text/plain"})
print(r.text)
Unfortunately, the error I receive is the following:
for attrs in (resp['attributes']['value']):
TypeError: list indices must be integers, not str
In your JSON, the fact that it is wrapped in [ then ] means it is a JSON array, but with just one element.
So, as your error message suggests, resp needs an integer as its index, for which element of the array you want. resp[0] then refers to
{
"attributes": [
{
"type": "COMMAND",
"name": "COMMAND",
"value": [
"buttonState"
]
},
{
"type": "std_msgs.msg.Bool",
"name": "buttonState",
"value": {
"data": false
}
}
],
"type": "sensor",
"id": "s_2"
}
(notice no [] now, so it's a JSON object)
Then you want resp[0]['attributes'] to refer to the single part of this object, 'attributes' which again refers to an array.
Therefore for attribute in resp[0]['attributes'] will allow you to loop through this array.
To get the boolean value you want, you'll then want to find which element of that array has 'name' of 'buttonState' and check the corresponding 'value'.
In all, you're probably looking for something like:
for attribute in resp[0]['attributes']:
if attribute['name'] == 'buttonState' and attribute['value']['data'] is False:
# Do your thing here
resp is a list so, to get first element, access it as resp[0]. Same with resp[0]['attributes']
So you can access it as follows
resp[0]['attributes'][0]['value']
You can restructure your for loop as follows
for d in resp[0]['attributes']:
if isinstance(d['value'], dict) and d['value'].get('data') == false:
yo = 100
break
The answer is in the error message I think:
TypeError: list indices must be integers, not str
The first entry in attributes has a value that is a list, so you can't get 'data' from that.
Since you have a mix of types, you might need to check if 'value' is a list or a dict.
Edit:
Jumped the gun here I think. #dennlinger gives an explanation to your error message. But you'll get it again once you're past that...
I'm using requests and JSON to pull some data from an API, and I'm struggling with using a nested dict.
Here is the JSON data:
{"data": [
{
"ContactId": "123",
"EmailAddress": "abc#xyz.com",
"FirstName": null,
"LastName": null,
"ClickDate": "6/6/1966",
"Clicks": "5",
"IPAddress": "1.1.1.1.1",
"UserAgent": "IE8.0",
"UniqueLinksClicked": [
{
"LinkURL": "http://link1.com",
"LinkURL": "http://link2.com",
"LinkURL": "http://link3.com"
}
]
}
]}
I'm able to access all of the ContactID and other 1st level stuff fine, but I can't figure out how to traverse the "LinkURL" stuff.
Here is my python...
result = requests.get(requesturl, headers=headers)
jdata = json.loads(result.content)
for result in jdata["data"]:
contactID = str([(result["ContactId"])])
for result in jdata["data"]["UniqueLinksClicked"]: #I'm doing this wrong, but I'm not sure how.
print(ContactID + " " + str([(result["LinkURL"])]))
The line marked with a comment above generates a TypeError indicating it's a list, where I expected it to be a dict:
list indices must be integers or slices, not str
If instead I drop the ["data"] dereference and try to access "UniqueLinksClicked" on jdata:
for link in jdata["UniqueLinksClicked"]:
I get a key error because the ["UniqueLinksClicked"] is an item inside of the ["data"] dict.
How do I do this correctly?
You can iterate over the links in a nested loop. Do not use the same variable name result in two nested loops! Use a different variable name in the inner loop.
for link in result["UniqueLinksClicked"]:
print(ContactID, link["LinkURL"])
(Moved from question.)
[OP] was confused about the variable naming in the for variable1 in variable2["dict"]: portion. After some help from Håken Lid, [they] figured it out.
It should look like this...
for item in jdata["data"]:
contactID = str([(item["ContactId"])])
print(contactID)
for link in item["UniqueLinksClicked"]:
print(link["LinkURL"])
I have an array of dictionaries like so:
myDict[0] = {'date':'today', 'status': 'ok'}
myDict[1] = {'date':'yesterday', 'status': 'bad'}
and I'm trying to export this array to a json file where each dictionary is its own entry. The problem is when I try to run:
dump(myDict, open("test.json", "w"))
It outputs a json file with a number prefix before each entry
{"0": {"date": "today", "status": "ok"}, "1": {"date": "yesterday", "status": "bad"} }
which apparently isn't legal json since my json parser (protovis) is giving me error messages
Any ideas?
Thanks
Use a list instead of a dictionary; you probably used:
myDict = {}
myDict[0] = {...}
You should use:
myList = []
myList.append({...}
P.S.: It seems valid json to me anyways, but it is an object and not a list; maybe this is the reason why your parser is complaining
You should use a JSON serializer...
Also, an array of dictionaries would better serialize to something like this:
[
{
"date": "today",
"status": "ok"
},
{
"date": "yesterday",
"status": "bad"
}
]
That is, you should just use a JavaScript array.