convert_logs.py

#!/usr/bin/env python
import sys
import json
import re

pattern = re.compile(r'[^A-Za-z_0-9]')

def rename_keys(o):
    if isinstance(o, dict):
        return {pattern.sub('_', k): rename_keys(v) for k, v in o.items()}
    elif isinstance(o, list):
        return [rename_keys(o) for o in o]
    return o

for line in sys.stdin:
    if line:
        print(json.dumps(rename_keys(json.loads(line))))