Question

这似乎应该很容易，但我无法弄清楚。这是从JSON文件加载到此处的片段：

with open('states.json') as f:
    data = json.load(f)

如何仅打印状态名称？或者只是名称和缩写？

{
    "states": [
        {
            "name": "Alabama",
            "abbreviation": "AL",
            "area_codes": [
                "205",
                "251",
                "256",
                "334",
                "938"
            ]
        },
        {
            "name": "Alaska",
            "abbreviation": "AK",
            "area_codes": [
                "907"
            ]
        },
        {
            "name": "Arizona",
            "abbreviation": "AZ",
            "area_codes": [
                "480",
                "520",
                "602",
                "623",
                "928"
            ]
        }
}

尝试过：

print(data["states"])  #prints everything
print(data["states"]["name"]) #errors out
print(data["states"]["name"][0]) #prints just first record

也尝试过此方法，它会再次打印所有内容：

for state in data['states']:
    print(state)

Answer 1

应该遵循以下步骤：

state_names = [state["name"] for state in data["states"]]
print("\n".join(state_names))

或名称和缩写：

names_and_abbrev = ["{}: {}".format(state["abbreviation"], state["name"]) for state in data["states"]]
print("\n".join(names_and_abbrev))

结果：

AL: Alabama
AK: Alaska
AZ: Arizona

深入研究Python字典，一次升级

1 个答案: