从 json 字符串中读取数据并使用 python 对其进行操作

Question

i have a .json file like this

{"name":"george" , "age":28 , "gender":"male"}
{"name":"maria" , "age":20 , "gender":"female"}
{"name":"mike" , "age":22 , "gender":"male"}

and i want to read the file in python so i can get each value so i can manipulate it later in my code. I have tried the code below:

with open ("file.json" , "r") as f:
data = json.load(f)
for line in data:
    print (line["name"])

but it won't work unless i change .json file like this:

[
{"name":"george" , "age":28 , "gender":"male"},
{"name":"maria" , "age":20 , "gender":"female"},
{"name":"mike" , "age":22 , "gender":"male"}
]

how can i do it without changing the .json file or how i can manipulate the file with regex so i can run the above code to take each value ?

Thank you very much for your time !

Answer 1

Assuming each dictionary is stored in a new line, You can use:

import json
with open ("file.json" , "r") as f:
    data = [json.loads(val) for val in f.readlines()]
for line in data:
    print (line["name"])

Additionaly if the dictionaries are not stored in different lines, you can use:

import json
with open ("file.json" , "r") as f:
    data = []
    opn = 0
    cur = ''
    for char in a.strip():
    if char == '{':
         opn += 1
    elif char == '}':
        opn -= 1
    cur += char
    if opn == 0:
        data.append(json.loads(cur))
        cur = ''
for line in data:
    print (line["name"])

Answer 2

As comments have already pointed out, your file isn't valid json. Each line is its own json object and has to be parsed separately.

with open ("file.json" , "r") as f:
    data = [json.loads(line) for line in f.readlines()]

The code above uses a list comprehension to do the following: for each line in your file, read the line contents as a string and parse the string with the json.loads() method.