如何在Python中将此字符串转换为字典？

Question

I have a string that I get from a mongodb export into a csv: Here's an example:

[{"group":"Most Common","id":"00000000000002","name":"HVAC Specialists","name_singular":"HVAC Specialist"},{"group":"Other","id":"00000000001","name":"Hauling \u0026 Junk Removers","name_singular":"Hauling \u0026 Junk Remover"}]

I'm trying to put the date into a dict so I can pull out what I need and export it.

I tried putting in into a list, but it created elements out of each letter.

The string is in a txt file and I'm calling it like this:

python stringwork.py thestring.txt

I saw this question and tried this:

from sys import argv
import json

# filename = argv

txt = open(argv[1])

json.loads(str(txt))

And I got the following error.

ValueError: No JSON object could be decoded

Answer 1

The txt variable is a file object and can't be converted to a string. So you should read the contents of the file object such as txt = open(argv[1]).readlines() . Then you can obtain the string in the txt list with txt[0] .

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from sys import argv
import json

filename = argv

txt = open(argv[1]).readlines()

a = json.loads(str(txt[0]))
print(a)

Answer 2

You are a bit confused here:

txt = open(argv[1])
json.loads(str(txt))

After this, txt is a file object, not the actual string.

For that you'll need to do something like this:

txt = open(argv[1]).read()
json.loads(txt)

Here txt is already a string with the file content, so there is no need for str .

Do check the documentation on reading / writing files.