Question

I have a json file containing:

[{"id": "0",
"Name": "John",
"Blah": "m",
...
...}
{
"id": "2",
"Name": "John",
"Blah", "m",
...
...},
{
"id": "1",
"Name": "Ron",
"Blah", "r",
...
...},
{
"id": "0",
"Name": "Jake",
"Blah", "s",
...
...}]

As you can everything else is same beside the id's. What I want to do I would like to keep the one with id=2 and delete the one with id=0.

So, after modification file should look like:

[{
"id": "2",
"Name": "John",
"Blah", "m",
...
...},
{
"id": "1",
"Name": "Ron",
"Blah", "r",
...
...},
{
"id": "0",
"Name": "Jake",
"Blah", "s",
...
...}]

This is what I have so far:

with open(filename+'.json') as f:
    # load json objects to dictionaries
    jsons = map(json.loads, f)

uniques = {x['Name']: x for x in jsons}

# write to new json file
with open(filename+"Output"+'.json' ,'w') as nf:
    json.dump(uniques.values(), nf)

print uniques.values()

Above x contains the list. I am not able to figure out how I can iterate over the tuple elements.

But it gives me the error:

Traceback (most recent call last):
  File "readJsonFile.py", line 18, in <module>
    uniques = {x['PlayerName']: x for x in jsons}
  File "readJsonFile.py", line 18, in <dictcomp>
    uniques = {x['PlayerName']: x for x in jsons}
TypeError: list indices must be integers, not str

I tried looking for an example on stackoverflow. Also, tried to change the x to an int or string. Doesn't work, any help will be appreciated.

Answer 1

感谢Martijn Pieters

解决方案是：

#Opening File
with open(filename+'.json') as f: 
    d = json.load(f) 
#Printing Unique data 
uniques = {str(x['Name']): x for x in d} 
print "unique vals:",uniques

Modify json script to keep one of the duplicate value based on id

1 个答案: