schematize.py

### For finding schema

def schematize(obj):
    '''
    Get schema of nested JSON, assuming first item in lists.
    '''
    if isinstance(obj, dict):
        return {k: schematize(v) for k, v in obj.items()}
    elif isinstance(obj, list):
        return [schematize(elem) for elem in obj][:1]
    else:
        return type(obj)  # no container, just values (str, int, float)

### //