So i have a json:
{
"code": "Q0934X",
"name": "PIDBA",
"longlat": "POINT(23.0 33.0)",
"altitude": 33
}
And i want to change the column code to Identifier
The wished output is this
{
"Identifier": "Q0934X",
"name": "PIDBA",
"longlat": "POINT(23.0 33.0)",
"altitude": 33
}
How can i do in the shortest way? Thanks
It appears that both "the json" you have and your desired result are JSON strings. If the one you have is json_str you can write:
json = JSON.parse(json_str).tap { |h| h["Identifier"] = h.delete("code") }.to_json
puts json
#=> {"name":"PIDBA","longlat":"POINT(23.0 33.0)","altitude":33,"Identifier":"Q0934X"}
Note that Hash#delete returns the value of the key being removed.
Perhaps transform_keys is an option.
The following seems to work for me (ruby 2.6):
json = JSON.parse(json_str).transform_keys { |k| k === 'code' ? 'Identifier' : k }.to_json
But this may work for Ruby 3.0 onwards (if I've understood the docs):
json = JSON.parse(json_str).transform_keys({ 'code': 'Identifier' }).to_json
Related
I have json like this below
{
"id": 1,
"interviewer": "hengtw1",
"incidenttwg1": {
"id": 5,
"child_occupation": [
6
],
},
}
How can i access child_occupation array. All i tried is incidenttwg1['child_occupation'] or ['incidenttwg1']['child_occupation']. Anyway its still doesn't work.
Any Help?? Thanks....
check this if your string is valid json in python
and
refer this to know more about json encoder and decoder
import json
# Decoding json
data = json.loads({"id": 1,"interviewer": "hengtw1","incidenttwg1": {"id": 5,"child_occupation": [6]}})
print(data["incidenttwg1"]["child_occupation"])
# this will print [6] (list)
print(data["incidenttwg1"]["child_occupation"][0])
# this will print 6 (list item)
Im pulling a list of AMI ids from my AWS account and its being written into a json file.
The json looks basically like this:
{
"Images": [
{
"CreationDate": "2017-11-24T11:05:32.000Z",
"ImageId": "ami-XXXXXXXX"
},
{
"CreationDate": "2017-11-24T11:05:32.000Z",
"ImageId": "ami-aaaaaaaa"
},
{
"CreationDate": "2017-10-24T11:05:32.000Z",
"ImageId": "ami-bbbbbbb"
},
{
"CreationDate": "2017-10-24T11:05:32.000Z",
"ImageId": "ami-cccccccc"
},
{
"CreationDate": "2017-12-24T11:05:32.000Z",
"ImageId": "ami-ddddddd"
},
{
"CreationDate": "2017-12-24T11:05:32.000Z",
"ImageId": "ami-eeeeeeee"
}
]
}
My code looks like this so far after gathering the info and writing it to a .json file locally:
#writes json output to file...
print('writing to response.json...')
with open('response.json', 'w') as outfile:
json.dump(response, outfile, ensure_ascii=False, indent=4, sort_keys=True, separators=(',', ': '))
#Searches file...
print('opening response.json...')
with open("response.json") as f:
file_parsed = json.load(f)
The next part im stuck on is how to iterate through the file and print only the CreationDate and ImageId values.
print('printing CreationDate and ImageId...')
for ami in file_parsed['Images']:
#print ami['CreationDate'] #THIS WORKS
#print ami['ImageId'] #THIS WORKS
#print ami['CreationDate']['ImageId']
The last line there gives me this no matter how I have tried it: TypeError: string indices must be integers
My desired output is something like this:
2017-11-24T11:05:32.000Z ami-XXXXXXXX
Ultimately what im looking to do is then iterate through lines that are a certain date or older and deregister those AMIs. So would I be converting these to a list or a dict?
Pretty much not a programmer here so dont drown me.
TIA
You have almost parsed the json but for the desired output you need to concatenate the 'CreationDate' and 'ImageId' like this:
for ami in file_parsed['Images']:
print(ami['CreationDate'] + " "+ ami['ImageId'])
CreationDate evaluates to a string. So you can only take numerical indices of a string which is why ['CreationDate']['ImageId'] leads to a TypeError. Your other two commented lines, however, were correct.
To check if the date is older, you can make use of the datetime module. For instance, you can take the CreationDate (which is a string), convert it to a datetime object, create your own based on what that certain date is, and compare the two.
Something to this effect:
def checkIfOlder(isoformat, targetDate):
dateAsString = datetime.strptime(isoformat, '%Y-%m-%dT%H:%M:%S.%fZ')
return dateAsString <= targetDate
certainDate = datetime(2017, 11, 30) # Or whichever date you want
So in your for loop:
for ami in file_parsed['Images']:
creationDate = ami['CreationDate']
if checkIfOlder(creationDate, certainDate):
pass # write code to deregister AMIs here
Resources that would benefit would be Python's datetime documentation and in particular, the strftime/strptime directives. HTH!
I need to extract only the value for 'admins' from this Json using Ruby :
JSON -
{
"Roles":[
{
"admins":[
"me"
],
"role":"cleanup"
},
{
"admins":[
"tester"
],
"role":"create a mess"
},
]
}
RUBY -
require 'json'
file = File.read('adminlist_Feb_2017.json')
thismonthlist=JSON.parse(file)
puts thismonthlist['admins']
Output - this gives me a blank output however if i change the last line to :
puts thismonthlist['Roles']
it gives me everything. I just want the list of admins.
Try something like this
thismonthlist[:Roles].flat_map { |role| role[:admins] }
=> ["me", "tester"]
admins = []
File.open('adminlist_Feb_2017.json', 'r') do |file|
json = JSON.parse(file.read)
admins = json["Roles"].flat_map{|role| role["admins"]}.uniq
end
admins
# => ["me", "tester"]
I open the file and process it in a block to ensure it's closed at the end. In the block I read the file content and parse the json string into a hash. Then I go through the "Roles" of the hash, grab the "admins" arrays and return it as one array only with Enumerable#flat_map. After I use Enumerable#uniq to return each admin only once.
I am trying to convert a json file which contain object and array to a JSON file.
Below is the JSON file
{
"localbusiness":{
"name": "toto",
"phone": "+11234567890"
},
"date":"05/02/2016",
"time":"5:00pm",
"count":"4",
"userInfo":{
"name": "John Doe",
"phone": "+10987654321",
"email":"john.doe#unknown.com",
"userId":"user1234333"
}
}
my goal is to save this is a database such as MongoId. I would like to use map to get something like:
localbusiness_name => "toto",
localbusiness_phone => "+11234567890",
date => "05/02/2016",
...
userInfo_name => "John Doe"
...
I have tried map but it's not splitting the array of local business or userInfo
def format_entry
ps = #params.map do | h |
ps.merge!(h)
##logger.info("entry #{h}")
end
##logger.info("formatting the data #{ps}")
ps
end
I do not really how to parse each entry and rebuild the name
It looks like to me you are trying to "flatten" the inner hashes into one big hash. Flatten being incorrect because you want to prepend the hash's key to the sub-hash's key. This will require looping through the hash, and then looping again through each sub hash. This code example will only work if you have 1 layer deep. if you have multiple layers, then I would suggest making two methods, or a recursive method.
#business = { # This is a hash, not a json blob, but you can take json and call JSON.parse(blob) to turn it into a hash.
"localbusiness":{
"name": "toto",
"phone": "+11234567890"
},
"date":"05/02/2016",
"time":"5:00pm",
"count":"4",
"userInfo":{
"name": "John Doe",
"phone": "+10987654321",
"email":"john.doe#unknown.com",
"userId":"user1234333"
}
}
#squashed_business = Hash.new
#business.each do |k, v|
if v.is_a? Hash
v.each do |key, value|
#squashed_business.merge! (k.to_s + "_" + key.to_s) => value
end
else
#squashed_business.merge! k => v
end
end
I noticed that you are getting "unexpected" outcomes when enumerating over a hash #params.each { |h| ... } because it gives you both a key and a value. Instead you want to do #params.each { |key, value| ... } as I did in the above code example.
I've wrote a program which process JSON objects. Now I want to verify if I've missed something.
Is there an JSON-example of all allowed JSON structure combinations? Something like this:
{
"key1" : "value",
"key2" : 1,
"key3" : {"key1" : "value"},
"key4" : [
[
"string1",
"string2"
],
[
1,
2
],
...
],
"key5" : true,
"key6" : false,
"key7" : null,
...
}
As you can see at http://json.org/ on the right hand side the grammar of JSON isn't quite difficult, but I've got several exceptions because I've forgotten to handles some structure combinations which are possible. E.g. inside an array there can be "string, number, object, array, true, false, null" but my program couldn't handle arrays inside an array until I ran into an exception. So everything was fine until I got this valid JSON object with arrays inside an array.
I want to test my program with a JSON object (which I'm looking for). After this test I want to be feel certain that my program handle every possible valid JSON structure on earth without an exception.
I don't need nesting in depth 5 or so. I only need something in nested depth 2 or max 3. With all base types which nested all allowed base types, inside this base type.
Have you thought of escaped characters and objects within an object?
{
"key1" : {
"key1" : "value",
"key2" : [
"String1",
"String2"
],
},
"key2" : "\"This is a quote\"",
"key3" : "This contains an escaped slash: \\",
"key4" : "This contains accent charachters: \u00eb \u00ef",
}
Note: \u00eb and \u00ef are resp. charachters ë and ï
Choose a programming language that support json.
Try to load your json, on fail the exception's message is descriptive.
Example:
Python:
import json, sys;
json.loads(open(sys.argv[1]).read())
Generate:
import random, json, os, string
def json_null(depth = 0):
return None
def json_int(depth = 0):
return random.randint(-999, 999)
def json_float(depth = 0):
return random.uniform(-999, 999)
def json_string(depth = 0):
return ''.join(random.sample(string.printable, random.randrange(10, 40)))
def json_bool(depth = 0):
return random.randint(0, 1) == 1
def json_list(depth):
lst = []
if depth:
for i in range(random.randrange(8)):
lst.append(gen_json(random.randrange(depth)))
return lst
def json_object(depth):
obj = {}
if depth:
for i in range(random.randrange(8)):
obj[json_string()] = gen_json(random.randrange(depth))
return obj
def gen_json(depth = 8):
if depth:
return random.choice([json_list, json_object])(depth)
else:
return random.choice([json_null, json_int, json_float, json_string, json_bool])(depth)
print(json.dumps(gen_json(), indent = 2))