Merge several metadata JSON files into one

merge.py

import json
import os

FOLDER = './metadata'

result = []
# read all .json files in the folder
print('Reading files...')
json_files = [f for f in os.listdir(FOLDER) if f.endswith('.json')]
print('Found {} files.'.format(len(json_files)))
print('Merging...')
# sorts the files by their number
json_files.sort(key=lambda x: int(x.split('.')[0]))

for idx, f in enumerate(json_files):
    with open(os.path.join(FOLDER, f)) as json_file:
        data = json.load(json_file)
        # sets a dummy image field
        data['image'] = 'ipfs://YOUR_CID/' + str(idx + 1) + ".png";
        result.append(data)

print('Writing output...')
# writes the result to a new file
with open('metadata.json', 'w') as outfile:
    json.dump(result, outfile)

print('Done.')

Done.