Use cast run to get traces as json

cast-json-example.py

# ❯ CAST_BIN=[optional-cast-binary-full-path] python cast-json-example.py

import subprocess
import json
import os
import tempfile

cast_bin = os.environ.get('CAST_BIN', 'cast')

def cast_run(rpc_url, txhash):
    with tempfile.NamedTemporaryFile(delete=True) as tmpfile:
        output = tmpfile.name
        result = subprocess.run([cast_bin, 'run', '-r', rpc_url, txhash, '--output', output ], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, text=True, check=True)

        result.check_returncode()

        return json.load(open(output))

if __name__ == "__main__":
    data = cast_run('https://rpc.ankr.com/arbitrum', '0x979ad9b7f5331ea8034305a83b5cd50aea88adec395fff8298dd90eb1b87667f')
    print("Parsed JSON data:")
    print(json.dumps(data, indent=2))