如何将变量添加到JSON路径中

import json

def add_variable_to_json_path(json_data, variable):
    # 将JSON字符串转换为Python对象
    data = json.loads(json_data)
    
    # 构建变量路径
    path = f"$.{variable}"
    
    # 使用eval()函数将变量添加到JSON路径中
    value = eval(path)
    
    # 返回结果
    return value

# 示例JSON数据
json_data = '''
{
  "name": "John",
  "age": 30,
  "address": {
    "street": "123 Street",
    "city": "New York"
  }
}
'''

# 添加变量到JSON路径中
variable = "address.city"
result = add_variable_to_json_path(json_data, variable)
print(result)