Python – 将字典列表转换为 JSON

在本文中，我们将讨论如何在Python中将字典列表转换为 JSON

方法一：使用 json.dumps()

此函数将字典列表转换为 JSON。

句法：

json.dumps(dict, indent)

参数：

• 字典 - 应转换为 JSON 对象的字典的名称。
• indent – 定义缩进的单位数

示例：用于创建员工数据字典列表并转换为 JSON 的Python程序

Python3

# import json module
import json
  
# list of dictionaries of employee data
data = [{"id": ("1", "2", "3"), "name": ("bhanu", "sivanagulu"), 
         "department": ("HR", "IT")},
        {"id": ("4", "5", "6"), "name": ("sai", "poori"),
         "department": ("HR", "IT")},
        {"id": ("7", "8", "9"), "name": ("teja", "gowtam"),
         "department": ("finance", "IT")},
        {"id": ("10", "11", "12"), "name": ("sai", "jyothi"),
         "department": ("business", "IT")},
        {"id": ("13", "14", "15"), "name": ("prudhvi", "nagendram"),
         "department": ("business", "IT")}]
  
  
# convert into json
final = json.dumps(data, indent=2)
  
# display
print(final)

输出：

[
  {
    "id": [
      "1",
      "2",
      "3"
    ],
    "name": [
      "bhanu",
      "sivanagulu"
    ],
    "department": [
      "HR",
      "IT"
    ]
  },
  {
    "id": [
      "4",
      "5",
      "6"
    ],
    "name": [
      "sai",
      "poori"
    ],
    "department": [
      "HR",
      "IT"
    ]
  },
  {
    "id": [
      "7",
      "8",
      "9"
    ],
    "name": [
      "teja",
      "gowtam"
    ],
    "department": [
      "finance",
      "IT"
    ]
  },
  {
    "id": [
      "10",
      "11",
      "12"
    ],
    "name": [
      "sai",
      "jyothi"
    ],
    "department": [
      "business",
      "IT"
    ]
  },
  {
    "id": [
      "13",
      "14",
      "15"
    ],
    "name": [
      "prudhvi",
      "nagendram"
    ],
    "department": [
      "business",
      "IT"
    ]
  }
]

方法二：使用 json.dump()

这会将转换后的 JSON 数据写入文件。

句法：

json.dump(dict, file_pointer)

参数：

• dictionary – 应转换为 JSON 对象的字典名称。
• 文件指针——以写入或附加模式打开的文件的指针。

句法：

with open("mydata.json", "w") as final:
   json.dump(data, final)

其中 mydata 是新的 JSON 文件。最后，我们必须下载创建的 JSON 文件

句法：

files.download('mydata.json')

例子：

Python3

# import json module
from google.colab import files
import json
  
# list of dictionaries of employee data
data = [{"id": ("1", "2", "3"), "name": ("bhanu", "sivanagulu"),
         "department": ("HR", "IT")},
        {"id": ("4", "5", "6"), "name": ("sai", "poori"),
         "department": ("HR", "IT")},
        {"id": ("7", "8", "9"), "name": ("teja", "gowtam"),
         "department": ("finance", "IT")},
        {"id": ("10", "11", "12"), "name": ("sai", "jyothi"),
         "department": ("business", "IT")},
        {"id": ("13", "14", "15"), "name": ("prudhvi", "nagendram"),
         "department": ("business", "IT")}]
  
  
# convert into json
# file name is mydata
with open("mydata.json", "w") as final:
    json.dump(data, final)
  
# download the json file
files.download('mydata.json')

输出：

[{“id”: [“1”, “2”, “3”], “name”: [“bhanu”, “sivanagulu”], “department”: [“HR”, “IT”]}, {“id”: [“4”, “5”, “6”], “name”: [“sai”, “poori”], “department”: [“HR”, “IT”]}, {“id”: [“7”, “8”, “9”], “name”: [“teja”, “gowtam”], “department”: [“finance”, “IT”]}, {“id”: [“10”, “11”, “12”], “name”: [“sai”, “jyothi”], “department”: [“business”, “IT”]}, {“id”: [“13”, “14”, “15”], “name”: [“prudhvi”, “nagendram”], “department”: [“business”, “IT”]}]