Python 如何从一个大json文件中删除多个json对象

大家好，我试过下面的代码，最适合从json文件中删除对象

#!/usr/bin/python

# Load the JSON module and use it to load your JSON file.
# I'm assuming that the JSON file contains a list of objects.
import json
obj  = json.load(open("pandas.json"))

# Iterate through the objects in the JSON and pop (remove)
# the obj once we find it.
for i in range(len(obj)):
    #path = ["000000000036.jpg","000000000049.jpg", "000000000077.jpg"]
    if obj[i]["path"] == "000000000036.jpg":
        obj.pop(i)
        break

# Output the updated file with pretty JSON
open("updated_file.json", "w").write(
    json.dumps(obj)
)

---

这里我有一个问题，如果我想从我尝试过但失败的json文件中删除许多随机json对象，我应该怎么做？请让我在上面明确“帮助欣赏”。

假设json数据是一个json元素数组，下面的代码将从中删除3个随机元素。根据您的需要定制

import json
import random

data = json.load(open("filepath.json"))
print(json.dumps(data, indent=4))

keys_to_be_deleted = [random.randint(0, len(data)-1) for _ in range(3)]
[data.pop(i) for i in keys_to_be_deleted]
print(json.dumps(data, indent=4))

---

我找到了如何从大json文件中删除特定json对象的方法，下面是一个示例代码

#!/usr/bin/python

# Load the JSON module and use it to load your JSON file.
# I'm assuming that the JSON file contains a list of objects.
import json
obj = json.load(open("new_pandas.json"))

# Iterate through the objects in the JSON and pop (remove)
# the obj once we find it.

num = 0
n = 0
flag = False

for i in range(len(obj)):
    path = ["000000170035.jpg","000000171962.jpg","000000004972.jpg"]

    for j in path:

        if obj[n]["path"] == j:
            print(obj[n]["path"])
            obj.pop(n)
            flag = True
            break

    if flag == False: # Cannot find pass forward 
        n = n + 1
    else:
        flag = False


    if obj[i]["path"] == "000000581357.jpg": #end object of json file
        break

    # print(obj[i]["path"])
    num = num + 1
    if num >= 100000:
        break

# Output the updated file with pretty JSON
open("updated-file.json", "w").write(
    json.dumps(obj)
)

---

非常感谢@Pradip分享一段非常好的代码，如果我想从json中删除一些特定的对象，我可以在我发布的代码中特别提到“path”值（在每个对象的开头），它会删除整个特定的对象。现在我想用“path”值删除很多对象，我有一个“path”值列表，我想从我的json中删除1000多个值。所以你有一个名为path的列表，它有1000多个值。现在，您想删除任何json元素（在您的json数组中），其中包含一个名为path的键，其值在1000+个值中。我的理解正确吗？正是Pradip先生你理解得很好。答案2有一个示例代码

#!/usr/bin/python

# Load the JSON module and use it to load your JSON file.
# I'm assuming that the JSON file contains a list of objects.
import json
obj = json.load(open("new_pandas.json"))

# Iterate through the objects in the JSON and pop (remove)
# the obj once we find it.

num = 0
n = 0
flag = False

for i in range(len(obj)):
    path = ["000000170035.jpg","000000171962.jpg","000000004972.jpg"]

    for j in path:

        if obj[n]["path"] == j:
            print(obj[n]["path"])
            obj.pop(n)
            flag = True
            break

    if flag == False: # Cannot find pass forward 
        n = n + 1
    else:
        flag = False


    if obj[i]["path"] == "000000581357.jpg": #end object of json file
        break

    # print(obj[i]["path"])
    num = num + 1
    if num >= 100000:
        break

# Output the updated file with pretty JSON
open("updated-file.json", "w").write(
    json.dumps(obj)
)