Converting JSON String to Dictionary Not List

Question

I am trying to pass in a JSON file and convert the data into a dictionary   So far  this is what I have done   import json json1 file   open  json1   json1 str   json1 file read   json1 data   json loads json1 str    I m expecting json1 data to be a dict type but it actually comes out as a list type when I check it with type json1 data     What am I missing  I need this to be a dictionary so I can access one of the keys

User · Answer

Here is a simple snippet that read s in a json text file from a dictionary  Note that your json file must follow the json standard  so it has to have   double quotes rather then   single quotes    Your JSON dump txt File     test   1    test2  123    Python Script   import json with open   your path to a dict dump txt   as handle      dictdump   json loads handle read

User · Answer

Your JSON is an array with a single object inside  so when you read it in you get a list with a dictionary inside  You can access your dictionary by accessing item 0 in the list  as shown below   json1 data   json loads json1 str  0    Now you can access the data stored in datapoints just as you were expecting   datapoints   json1 data  datapoints          I have one more question if anyone can bite  I am trying to take the average of the first elements in these datapoints i e  datapoints 0  0    Just to list them  I tried doing datapoints 0 5  0  but all I get is the first datapoint with both elements as opposed to wanting to get the first 5 datapoints containing only the first element  Is there a way to do this     datapoints 0 5  0  doesn t do what you re expecting  datapoints 0 5  returns a new list slice containing just the first 5 elements  and then adding  0  on the end of it will take just the first element from that resulting list slice  What you need to use to get the result you want is a list comprehension    p 0  for p in datapoints 0 5     Here s a simple way to calculate the mean   sum p 0  for p in datapoints 0 5   5    Result is 35 8   If you re willing to install NumPy  then it s even easier   import numpy json1 file   open  json1   json1 str   json1 file read   json1 data   json loads json1 str  0  datapoints   numpy array json1 data  datapoints    avg   datapoints 0 5 0  mean     avg is now 35 8   Using the   operator with the slicing syntax for NumPy s arrays has the behavior you were originally expecting with the list slices

User · Answer

pass the data using javascript ajax from get methods          javascript function         function addnewcustomer           This function run when button click       get the value from input box using getElementById             var new cust name   document getElementById  new customer   value              var new cust cont   document getElementById  new contact number   value              var new cust email   document getElementById  new email   value              var new cust gender   document getElementById  new gender   value              var new cust cityname   document getElementById  new cityname   value              var new cust pincode   document getElementById  new pincode   value              var new cust state   document getElementById  new state   value              var new cust contry   document getElementById  new contry   value        create json or if we know python that is call dictionary              var data     cust name  new cust name   cust cont  new cust cont   cust email  new cust email   cust gender  new cust gender   cust cityname  new cust cityname   cust pincode  new cust pincode   cust state  new cust state   cust contry  new cust contry         apply stringfy method on json             data   JSON stringify data         insert data into database using javascript ajax             var send data   new XMLHttpRequest                send data open  GET    http   localhost 8000 invoice system addnewcustomer  customerinfo   data true               send data send                 send data onreadystatechange   function                  if send data readyState  4  amp  amp  send data status  200                   alert send data responseText                                               django views      def addNewCustomer request        if method is get then condition is true and controller check the further line         if request method     GET        this line catch the json from the javascript ajax              cust info   request GET get  customerinfo        fill the value in variable which is coming from ajax       it is a json so first we will get the value from using json loads method       cust name is a key which is pass by javascript json        as we know json is a key value pair  the cust name is a key which pass by javascript json             cust name   json loads cust info   cust name               cust cont   json loads cust info   cust cont               cust email   json loads cust info   cust email               cust gender   json loads cust info   cust gender               cust cityname   json loads cust info   cust cityname               cust pincode   json loads cust info   cust pincode               cust state   json loads cust info   cust state               cust contry   json loads cust info   cust contry        it print the value of cust name variable on server             print cust name              print cust cont              print cust email              print cust gender              print cust cityname              print cust pincode              print cust state              print cust contry              return HttpResponse  Yes I am reach here

User · Answer

The best way to Load JSON Data into Dictionary is You can user the inbuilt json loader   Below is the sample snippet that can be used   import json f   open  data json   data   json load f   f close   type data  print data  lt keyFromTheJsonFile gt

User · Answer

I am working with a Python code for a REST API  so this is for those who are working on similar projects    I extract data from an URL using a POST request and the raw output is JSON  For some reason the output is already a dictionary  not a list  and I m able to refer to the nested dictionary keys right away  like this   datapoint 1   json1 data  datapoints    datapoint 1     where datapoint 1 is inside the datapoints dictionary

User · Answer

You can use the following   import json   with open   lt yourFile gt  json    r   as JSON         json dict   json load JSON      Now you can use it like dictionary    For example    print json dict  username

[python] Converting JSON String to Dictionary Not List

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