遍历JSON对象/数组，删除选中对象的字段

def delete_fields(obj, fields):
    if isinstance(obj, dict):
        for key in list(obj.keys()):
            if key in fields:
                del obj[key]
            else:
                delete_fields(obj[key], fields)
    elif isinstance(obj, list):
        for item in obj:
            delete_fields(item, fields)

data = {
    "name": "John",
    "age": 30,
    "address": {
        "street": "123 Main St",
        "city": "New York"
    },
    "friends": [
        {"name": "Jane", "age": 25},
        {"name": "Bob", "age": 35}
    ]
}

fields_to_delete = ["street", "age"]

delete_fields(data, fields_to_delete)

print(data)

{
    "name": "John",
    "address": {
        "city": "New York"
    },
    "friends": [
        {"name": "Jane"},
        {"name": "Bob"}
    ]
}

def delete_fields(obj, fields):
    stack = [(obj, "")]
    
    while stack:
        current_obj, current_path = stack.pop()
        
        if isinstance(current_obj, dict):
            for key, value in current_obj.items():
                new_path = current_path + "/" + key
                
                if key in fields:
                    del current_obj[key]
                else:
                    stack.append((value, new_path))
        
        elif isinstance(current_obj, list):
            for index, item in enumerate(current_obj):
                new_path = current_path + "[" + str(index) + "]"
                stack.append((item, new_path))