如何将包含可解析字段的字符串添加到可添加到dataframe的列中

import pandas as pd
import ast

data = {'id': [1, 2, 3],
        'field_string': ['{"name": "John", "age": 30}', '{"name": "Jane", "age": 25}', '{"name": "Tom", "age": 35}']}
df = pd.DataFrame(data)

def parse_string(string):
    try:
        parsed_dict = ast.literal_eval(string)
        return parsed_dict
    except (SyntaxError, ValueError):
        return {}

df['parsed_field'] = df['field_string'].apply(parse_string)