比较两个 JSON 文件和 Return 差异

Question

我发现了一些与此类似的问题。问题是 none 这些解决方案对我有用，有些太先进了。我正在尝试读取两个 JSON 文件并 return 它们之间的区别。

我希望能够return file2 中缺少的对象并将其写入 file1。

这些都是 JSON 个文件

file1

[
 {
    "name": "John Wood",
    "age": 35,
    "country": "USA"
 },
 {
    "name": "Mark Smith",
    "age": 30,
    "country": "USA"
 }
]

.

file2

[
 {
    "name": "John Wood",
    "age": 35,
    "country": "USA"
 },
 {
    "name": "Mark Smith",
    "age": 30,
    "country": "USA"
 },
 {
    "name": "Oscar Bernard",
    "age": 25,
    "country": "Australia"
 }
]

代码

with open("file1.json", "r") as f1:
    file1 = f1.read()
    item1 = json.loads(file1)
    print(item1)

with open("file2.json", "r") as f2:
    file2 = f2.read()
    item2 = json.loads(file2)
    print(item2)

# Returns if that index is the same
for v in range(len(item1)):
    for m in range(len(item2)):
        if item2[v]["name"] == item1[m]["name"]:
            print("Equal")
        else:
            print("Not Equal")

我不习惯使用 JSON 编程或比较两个不同的文件。我想帮助 return 区别和基本上复制和粘贴将丢失的对象放入 file1。我这里显示的是 file1 中的每个对象等于或不等于 file2。因此，return输出“等于”和“不等于”。

输出：

Equal
Not Equal
Not Equal
Not Equal
Equal
Not Equal

我想 return 如果 file1 不等于 file2 和哪个对象 ("name") 是失踪的那个。之后，我希望能够 add/copy 使用 with open("file2.json", "w").

将丢失的对象放入 file2

Answer 1

with open("file1.json", "r") as f1:
    file1 = json.loads(f1.read())
with open("file2.json", "r") as f2:
    file2 = json.loads(f2.read())

for item in file2:
    if item not in file1:
        print(f"Found difference: {item}")
        file1.append(item)

print(f"New file1: {file1}")

Answer 2

file1=[
 {
    "name": "John Wood",
    "age": 35,
    "country": "USA"
 },
 {
    "name": "Mark Smith",
    "age": 30,
    "country": "USA"
 }
]
file2=[
 {
    "name": "John Wood",
    "age": 35,
    "country": "USA"
 },
 {
    "name": "Mark Smith",
    "age": 30,
    "country": "USA"
 },
 {
    "name": "Oscar Bernard",
    "age": 25,
    "country": "Australia"
 }
]

for item in file2:
    if item['name'] not in [x['name'] for x in file1]:
        print(f"Found difference: {item}")
        file1.append(item)

print(f"New file1: {file1}")

比较两个 JSON 文件和 Return 差异

Compare two JSON Files and Return the Difference

python

json

file

comparison