Python3:尝试使用列表来；“过滤器”；通过JSON文件来检索所选信息

所以我试图解决这个问题-我有一个充满

属性的文本文件

。就像这样。。。（实际上，大约有100行属性）

我还有另外100个json文件，看起来像这样：

[{
    "Title": "painting",
    "Artist":"Pablo Picasso",
    "Width":400,
    "Height": 400,
    "Name": "test-painting",
    "Comment":"none"
}]

我想尝试“过滤”

json

文件，以便它们只在textfile中显示定义的

属性。例如，我希望示例
json
文件在将textfile应用为过滤器后看起来像这样

[{
    "Width":400,
    "Height":400,
    "Comment":"none"
}]

所以这个过滤器基本上只显示我在textfile中定义的内容。到目前为止，我已经尝试过了，但没有成功

import os,sys
import json

attributes = [word.strip('\n').split(',')
     for word in open("textfile", 'r').readlines()]

for filename in os.listdir(.)
    with open(filename) as jsonfile:
         data = json.load(jsonfile)
         for line in data:
            for a in attribute:
                if a in line:
                   print(line)

谢谢
 看起来属性文件的读取方式有问题。
下面是一些基于属性过滤器文件提取json对象的代码

示例运行

./53619747.py -h
usage: 53619747.py [-h]
                   attributes-text-path json-input-directory
                   json-output-directory

positional arguments:
  attributes-text-path
  json-input-directory
  json-output-directory

optional arguments:
  -h, --help            show this help message and exit

./53619747.py attributes.txt input-json output-json

示例输出

./53619747.py attributes.txt input-json output-json
('attributes.txt', 'input-json', 'output-json')
[['Color'], ['Width'], ['Height'], ['Software'], ['Comment'], ['Size']]
['Color', 'Width', 'Height', 'Software', 'Comment', 'Size']
input-json/0001.json
[{u'Comment': u'none', u'Name': u'test-painting', u'Artist': u'Pablo Picasso', u'Title': u'painting', u'Height': 400, u'Width': 400}]
{u'Comment': u'none', u'Name': u'test-painting', u'Artist': u'Pablo Picasso', u'Title': u'painting', u'Height': 400, u'Width': 400}
(u'Comment', u'none')
(u'Name', u'test-painting')
(u'Artist', u'Pablo Picasso')
(u'Title', u'painting')
(u'Height', 400)
(u'Width', 400)
{u'Comment': u'none', u'Width': 400, u'Height': 400}
output-json/0001.json

53619747.py的内容

#!/usr/bin/env python
import argparse
import os
import json

parser = argparse.ArgumentParser()
parser.add_argument("attributes-text-path")
parser.add_argument("json-input-directory")
parser.add_argument("json-output-directory")
args = vars(parser.parse_args())

print(args['attributes-text-path'],args['json-input-directory'],args['json-output-directory'])

attributes = [word.strip('\n').split(',')
     for word in open(args['attributes-text-path'], 'r').readlines()]

print(attributes)
# [['Color'], ['Width'], ['Height'], ['Software'], ['Comment'], ['Size']]

attributes = []
with open(args['attributes-text-path'], 'r') as attributes_file_handler:
    for line in attributes_file_handler:
        # add the line minus the carriage return to attributes
        attributes.append(line.strip())

print(attributes)
# ['Color', 'Width', 'Height', 'Software', 'Comment', 'Size']

for filename in os.listdir(args['json-input-directory']):

    valid_json_file = False
    input_json_objects = []
    input_path = os.path.join(args['json-input-directory'],filename)

    print(input_path)

    with open(input_path) as input_json_file_handler:
        try:
            input_json_objects = json.load(input_json_file_handler)
            valid_json_file = True
            print(input_json_objects)
        except Exception as exception:
            print(exception)

    if valid_json_file:
        output_path = os.path.join(args['json-output-directory'],filename)
        results = []
        for item in input_json_objects:
            print(item)
            result = {}
            attribute_found = False
            for key in item.keys():
                print(key,item[key])
                if key in attributes:
                    result[key] = item[key]
                    attribute_found = True
            if attribute_found:
                print(result)
                results.append(result)    

        print(output_path)          
        with open(output_path,'w') as output_json_file_handler:
            output_json_file_handler.write(json.dumps(results,indent=4))       

你的尝试失败了什么？它看起来确实是正确的，但您没有对匹配项采取操作（
print（）
基本上什么都不做）。将open（filename）作为jsonfile：我猜您忘记了在open参数中的“filename”之后指定“r”。如何区分JSON文件和属性文本文件？作为扩展？所以对于属性，我把txt文件作为一个列表，我得到了一个错误：TypeError:unhabable type:“list”调整了我的代码，并根据你的建议对其进行了编辑，效果非常好。再次感谢！
#!/usr/bin/env python
import argparse
import os
import json

parser = argparse.ArgumentParser()
parser.add_argument("attributes-text-path")
parser.add_argument("json-input-directory")
parser.add_argument("json-output-directory")
args = vars(parser.parse_args())

print(args['attributes-text-path'],args['json-input-directory'],args['json-output-directory'])

attributes = [word.strip('\n').split(',')
     for word in open(args['attributes-text-path'], 'r').readlines()]

print(attributes)
# [['Color'], ['Width'], ['Height'], ['Software'], ['Comment'], ['Size']]

attributes = []
with open(args['attributes-text-path'], 'r') as attributes_file_handler:
    for line in attributes_file_handler:
        # add the line minus the carriage return to attributes
        attributes.append(line.strip())

print(attributes)
# ['Color', 'Width', 'Height', 'Software', 'Comment', 'Size']

for filename in os.listdir(args['json-input-directory']):

    valid_json_file = False
    input_json_objects = []
    input_path = os.path.join(args['json-input-directory'],filename)

    print(input_path)

    with open(input_path) as input_json_file_handler:
        try:
            input_json_objects = json.load(input_json_file_handler)
            valid_json_file = True
            print(input_json_objects)
        except Exception as exception:
            print(exception)

    if valid_json_file:
        output_path = os.path.join(args['json-output-directory'],filename)
        results = []
        for item in input_json_objects:
            print(item)
            result = {}
            attribute_found = False
            for key in item.keys():
                print(key,item[key])
                if key in attributes:
                    result[key] = item[key]
                    attribute_found = True
            if attribute_found:
                print(result)
                results.append(result)    

        print(output_path)          
        with open(output_path,'w') as output_json_file_handler:
            output_json_file_handler.write(json.dumps(results,indent=4))