如何将值添加到缺少的值中

// 添加到变量中
let value = null;
if (value === null) {
    value = "New Value";
}

// 添加到数组中
let array = [1, 2, null, 4, 5];
if (!array.includes("New Value")) {
    array.push("New Value");
}

// 添加到对象中
let obj = {
    prop1: "Value 1",
    prop2: null,
    prop3: "Value 3"
};
if (obj.prop2 === null) {
    obj.prop2 = "New Value";
}

# 添加到变量中
value = None
if value is None:
    value = "New Value"

# 添加到列表中
my_list = [1, 2, None, 4, 5]
if "New Value" not in my_list:
    my_list.append("New Value")

# 添加到字典中
my_dict = {
    "key1": "Value 1",
    "key2": None,
    "key3": "Value 3"
}
if my_dict["key2"] is None:
    my_dict["key2"] = "New Value"