Merge multiple json file into one python

Question

I am trying to merge the multiple json file into one which looks like this:

file1: [[a,b],[c,d],[e,f]]

file2: [[g,h],[i,f],[k,l]]

file3: [[m,n],[o,p],[q,r]]

I am using the below code to merge the files:

data = []

for f in glob.glob("*.json"):

    with open(f,) as infile:

        data.append(json.load(infile))

with open("merged_file.json",'w') as outfile:

  json.dump(data, outfile)

out:  [[[a,b],[c,d],[e,f]],[[g,h],[i,f],[k,l]],[[m,n],[o,p],[q,r]]]

But what I want is:

[[a,b],[c,d],[e,f],[g,h],[i,f],[k,l],[m,n],[o,p],[q,r]]

Instead of having separated lists, I wanted them in one list.

Answer 1

If you are sure all the files become lists after json.load-ing you should replace:

data.append(json.load(infile))

with

data.extend(json.load(infile))

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