Basic Python script that merge and beautify multiple JSONs files in subfolders. Given an input folder, it scans the directory tree, merging together the JSONs file found in a file in the parent folder called "<folder>-output.json". This script has one only CLI argument, i.e. "python beautify-json.py <root-folder>"

beautify-json.py

import json
import os
import sys

encoding = 'utf-8'
indentNum = 4

def clean(data):
    return json.dumps(data, sort_keys=True, indent=indentNum, separators=(',', ': '))

walk_dir = sys.argv[1]

print (walk_dir)

abs_dir = os.path.abspath(walk_dir)
print('walk_dir = ' + abs_dir)

for root, subdirs, files in os.walk(abs_dir):
    if (root.startswith('.')): 
        continue
    
    dirname = os.path.basename(root)
    output_file = os.path.join(os.path.join(root, os.pardir), dirname +'-output.json')
    
    print('--\nfolder = ' + root)
    print('output file = ' + output_file)

    out = []

    for filename in files:
        if (filename.endswith('-output.json')):
            continue

        file_path = os.path.join(root, filename)

        if filename.endswith('.json'):
            print('\t- file ' + filename)

            with open(file_path, 'r', encoding=encoding) as f:
                data = f.read()
                content = json.loads(data)
                out.append(content)

    clean_content = clean(out)
        
    with open(output_file, 'wb+') as out_file:
        out_file.write(clean_content.encode(encoding))