Generating a custom json file with user inputs

Question

I need a json file in this order as i have to keep changing the json values. This is a sample file i want to generate

1.control_file Also the location name tag in the json should be enclosed in "","" format which i need help with.

{
 "user": "dex",
 "issue_no": "test_tkt",
 "start_date": "2017-07-01",
 "end_date": "2017-07-01",
 "geo-ids": [627,438,360],
 "location_names": [
    "India.v1.2a_Final",
    "China.v2.3a_setup",
    "Hongkong.4a"
 ]
}

Below is the code i wrote. The expected output

import json
import os


filename = input("Enter the file name: ")
user = input("Enter the user name: ")
ticket = input("Enter the ticket id: ")
start_date = input("Enter the start date: ")
end_date = input("Enter the end date: ")

test_list=[]
input_list=input("enter the exp names: ")
exports = input_list.split(",")
for names in exports:
        demo = test_list.append(names)
        print(demo)


if not os.path.splitext(filename)[1]:
    filename += ".txt"


with open(filename, 'w') as f:
    json.dump({
        "user": user,
        "ticket": ticket,
        "start_date": start_date,
        "end_date" : end_date,
        "location_names" : [demo]
      }, f, indent=4)


print("JSON saved to file {}".format(os.path.abspath(filename)))

output i get

{
    "user": "dex",
    "ticket": "test_tkt",
    "start_date": "2017-07-01",
    "end_date": "2017-07-01",
    "location_names": [
        None
        None
        None
    ]
}

Output i want:

{
 "user": "dex",
 "issue_no": "test_tkt",
 "start_date": "2017-07-01",
 "end_date": "2017-07-01",
 "location_names": [
    "India.v1.2a_Final",
    "China.v2.3a_setup",
    "Hongkong.4a"
 ]
}

Will Keeling · Accepted Answer · 2019-04-22 11:08:45Z

2

You're assigning the return value of test_list.append() to the variable demo, but that will always be None because append() doesn't return anything.

Since test_list contains the list of names, you should use that as the value and get rid of the demo variable:

with open(filename, 'w') as f:
    json.dump({
        "user": user,
        "ticket": ticket,
        "start_date": start_date,
        "end_date" : end_date,
        "location_names" : test_list  # Use test_list
      }, f, indent=4)

answered Apr 22, 2019 at 11:08

Will Keeling

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Comments

Udit Hari Vashisht · Accepted Answer · 2019-04-22 10:18:05Z

0

use this instead.

with open(filename, 'w') as f:
json.dump({
    "user": user,
    "ticket": ticket,
    "start_date": start_date,
    "end_date" : end_date,
    "location_names" : [item for item in demo]
  }, f, indent=4)

answered Apr 22, 2019 at 10:18

Udit Hari Vashisht

5494 silver badges24 bronze badges

1 Comment

MfjoneZ Over a year ago

Enter the file name: test3 Enter the user name: dex Enter the ticket id: LIN-0000 Enter the start date: 2017-07-01 Enter the end date: 2017-07-01 enter the exp names: India.v1.2a_Final,China.v2.3a_setup,Hongkong.4a"  ]None None None Traceback (most recent call last):   File "C:\Users\dex\eclipse-workspace\PythonTest\src\SamplePrac\Custom_json.py", line 44, in <module>     "export_names" : [item for item in demo] TypeError: 'NoneType' object is not iterable

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