[
[
{
"indexnum": 677,
"type": 1,
"user": 54846,
"push": 0,
},
{
"indexnum": 2321,
"type": 1,
"user": 77924,
"push": 0,
}
]
]
import json
with open('./79553/combined.json', 'r',encoding='UTF-8') as infile:
my_data = json.load(infile)
datalist1 = []
print(my_data['indexnum'])
That is my saved json file and I want to extract only indexnum from that file
and append them in a new list.
(ex. datalist1 = [677,2321,…])
Whether the file was read successfully, all items were outputted normally when I ‘print(datalist1)’.
but ‘print(my_data[‘indexnum’])’ has ‘list indices must be integers or slices, not str’ error occured.
How to solve them?
try:
I try my_data[0][‘indexnumber’]
same problem
>Solution :
In your example, my_data is the whole json:
[
[
{
"indexnum": 677,
"type": 1,
"user": 54846,
"push": 0,
},
{
"indexnum": 2321,
"type": 1,
"user": 77924,
"push": 0,
}
]
]
This is my_data[0]
[
{
"indexnum": 677,
"type": 1,
"user": 54846,
"push": 0,
},
{
"indexnum": 2321,
"type": 1,
"user": 77924,
"push": 0,
}
]
This is my_data[0][0]
{
"indexnum": 677,
"type": 1,
"user": 54846,
"push": 0,
}
This is my_data[0][0][‘indexnum’]
677