如何在Python中按条件循环遍历数据并提取指定field_value

原始数据 #

[
    {
        "field_name": "mobile",
        "field_value": "917845546369",
        "type": "primary"
    },
    {
        "field_name": "email",
        "field_value": "xyz@gmail.com",
        "type": "primary"
    },
    {
        "field_name": "name",
        "field_value": "XYZ",
        "type": "primary"
    }
]

需求说明 #

遍历上述JSON数组，根据每个元素的field_name提取对应的field_value，最终输出如下格式的结果：

示例：当field_name=mobile时，取值为对应field_value

mobile = 917845546369
email = xyz@gmail.com
name = XYZ

实现代码（Python） #

批量提取所有键值对 #

# 原始数据
data = [
    {"field_name": "mobile", "field_value": "917845546369", "type": "primary"},
    {"field_name": "email", "field_value": "xyz@gmail.com", "type": "primary"},
    {"field_name": "name", "field_value": "XYZ", "type": "primary"}
]

# 按格式输出结果
print("示例：当field_name=mobile时，取值为对应field_value\n")
for item in data:
    print(f"{item['field_name']} = {item['field_value']}")

单独提取指定field_name的值 #

如果只需获取某个特定field_name对应的field_value，可以用以下代码：

target_field = "mobile"  # 可替换为需要查询的field_name

for item in data:
    if item["field_name"] == target_field:
        print(f"{target_field} = {item['field_value']}")
        break

内容的提问来源于stack exchange，提问作者user18578733